vlx/exp installation and operations...

Installation and Operations Guide

VLX/EXP

© Alerton Inc. All Rights Reserved. LTBT-TM-VLX Rev. 0001

Installation and Operations Guide | VLX/EXP

Important safety information and installation precautions

Read all instructionsFailure to follow all instructions may result in equipment damage or a hazardous condition. Read all instructions carefully before installing equipment.

Local codes and practicesAlways install equipment in accordance with the National Electric Code and in a manner acceptable to the local authority having jurisdiction.

Electrostatic sensitivityThis product and its components may be susceptible to electrostatic discharge (ESD). Use appropriate ESD grounding techniques while handling the product. When possible, always handle the product by its non-electrical components.

High voltage safety testExperienced electricians, at first contact, always assume that hazardous voltages may exist in any wiring system. A safety check using a known, reliable voltage measurement or detection device should be made immediately before starting work and when work resumes.

Lightning and high-voltage dangerMost electrical injuries involving low-voltage wiring result from sudden, unexpected high voltages on normally low-voltage wiring. Low-voltage wiring can carry hazardous high voltages under unsafe conditions. Never install or connect wiring or equipment during electrical storms. Improperly protected wiring can carry a fatal lightning surge for many miles. All outdoor wiring must be equipped with properly grounded and listed signal circuit protectors, which must be installed in compliance with local, applicable codes. Never install wiring or equipment while standing in water.

Wiring and equipment separationsAll wiring and controllers must be installed to minimize the possibility of accidental contact with other, potentially hazardous and disruptive power and lighting wiring. Never place 24VAC or communications wiring near other bare power wires, lightning rods, antennas, transformers, or steam or hot water pipes. Never place wire in any conduit, box, channel, duct or other enclosure containing power or lighting circuits of any type. Always provide adequate separation of communications wiring and other electrical wiring according to code. Keep wiring and controllers at least six feet from large inductive loads (power distribution panels, lighting ballasts, motors, etc.). Failure to follow these guidelines can introduce electrical interference and cause the system to operate erratically.

WarningThis equipment has been tested and found to comply with the limits for a class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his own expense.

© 2002 Alerton Inc. All Rights Reserved.6670 185th AVE NERedmond, WA 98052 USAPhone: (425)869-8400 FAX: (425)869-8445Web Site: www.alerton.com E-mail: [email protected]

All information in this document is provided as is without warranty of any kind. Alerton Inc. reserves the right to change any information herein without prior notice. No guarantees are given as to the accuracy of information. Trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Alerton, BACtalk, and their logos are registered trademarks and VisualLogic is a trademark of Alerton Inc. Alerton Inc. disclaims any proprietary interest in trademarks and trade names other than its own.

Questions, corrections, comments?To improve our information products and better serve our readers, your feedback is vital. If you have any questions, corrections, or comments about this publication or any other Alerton information products, please send e-mail to [email protected].

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2 © Alerton Inc. All Rights Reserved. LTBT-TM-VLX Rev. 0001

Installation and Operations Guide | Contents

ContentsAbout this guide 5

How to use this guide 5Other resources 6

Key illustrations 7About the VLX and EXPs 15

Operational overview 15What’s new in the VLX 16Compliances 16Restrictions 17

Hardware installation 18Mounting 18Single-point grounding 19Power connections 20Communications connections 25EXP I/O 28

Initial firmware and operator workstation setup 35Connecting to the VLX with HyperTerminal 35Final set up and check out at the operator workstation 46

VLX data, DDC, and automation 53Identifying input and output objects 53Inputs (AIs and BIs) 54Outputs (AOs and BOs) 54AVs and BVs 56DDC execution and status 57Special points in DDC programming 58

VLX/EXP operation and maintenance 59Using VLX diagnostic LEDs 59EXP Status LED 59Using H-O-A switches and trimpots 60Backup mode sequence of operation 61Saving and restoring configuration and setup data 61VLX coin-cell battery replacement 62Resetting the VLX and clearing data 62Performing a comprehensive field test 64

Appendix A: Technical data 66Appendix B: Scaling factors 68

0–5 and 0–10 VDC inputs 684–20mA inputs 69

Appendix C: BACtalk operator workstation templates 70Appendix D: HyperTerminal settings 71Appendix E: BACnet object and property reference 72

Properties of VLX AI objects 73Properties of VLX AO objects 73Properties of VLX AV objects 74Properties of VLX BI objects 76Properties of VLX BO objects 77Properties of VLX BV objects 78Properties of the VLX Device object 78Properties of VLX Event Enrollment objects 80

© Alerton Inc. All Rights Reserved. LTBT-TM-VLX Rev. 0001 3


Properties of VLX File objects 81Properties of VLX Notification Class objects 81Properties of VLX Program objects 82Properties of VLX Schedule objects 83

Appendix F: H-O-A and trimpot status values 84Appendix G: Input configuration worksheets 85

EXP 0 Input Configuration Worksheet 86EXP 1 Input Configuration Worksheet 87EXP 2 Input Configuration Worksheet 88EXP 3 Input Configuration Worksheet 89EXP 4 Input Configuration Worksheet 90EXP 5 Input Configuration Worksheet 91EXP 6 Input Configuration Worksheet 92EXP 7 Input Configuration Worksheet 93


Installation and Operations Guide | About this guide

About this guideThis document provides information to help you:

• Identify VLX and EXP components

• Install and wire a VLX and EXPs in the field

• Connect and configure the VLX for network connectivity and I/O operation

• Maintain and monitor the VLX during operation

How to use this guideFirst check Table 1 on page 6 for other documentation you might need. Depending on your level of expertise and job focus, you may need other references. For example, even experienced programmers will need the BACtalk Programmer’s Guide and Reference (LTBT-TM-PRGRMR) for DDC information.

Even if you’re an expert with Alerton and BACtalk systems, review “About the VLX and EXPs” on page 15. The VLX/EXP is a new breed, and this section gives you important information about new features and how to apply the VLX.

“Key illustrations” on page 7 is a good starting point for installation technicians and engineers. Browse either or both of these sections to become familiar with the hardware and the VLX’s unique and new installation requirements. If a component, feature, or step isn’t familiar, follow the cross-reference to more detailed information.

Appendixes at the back of the manual provide quick references and worksheets useful to programmers and system developers.

Setting up the VLX is a four-step process. Each step builds on the previous one, so this manual is organized in the order of these steps:

1. Install the hardware.

2. Connect with HyperTerminal for configuration.

3. Connect an operator workstation for configuration and checkout.

4. Set up programming, automation, and integration with a solid understanding of VLX data.

After you review installation information, check “VLX/EXP operation and maintenance” on page 59 for information about running tests and verifying operation.



Other resourcesTable 1 Other documentation related to VLX and EXPs

Alerton document (ID) Contains

Product data sheets (LTBT-VLX, LTBT-EXP)

Single-sheet summary of applications, capabilities, and technical data.

BACtalk System Design Guide (LTBT-TM-SYSDSGN)

Information and network architecture for the BACnet LANs to which the VLX connects, BACnet Ethernet and MS/TP LAN configuration, addressing overview, maximum distances and devices, and proper communications wiring installation techniques.

BACtalk Programmer’s Guide and Reference (LTBT-TM-PRGRMR)

Information and instructions for programming DDC and integrating DDC operation with automation features of the BACtalk operator workstation.

BACtalk Installation and Administration Guides

Installing BACtalk operator workstation software and using BACtalk to start up controllers.

Operator workstation user’s guide and online help

Using the operator workstation to connect to devices and set up energy management and building automation features.


Installation and Operations Guide | Key illustrations

Key illustrations

Figure 1 The VLX

ETHERNET10/100 BASE-T

(RJ-45)

PTPEIA-232(DB-9)

AC-2650

2 AMP MAXTIME DELAY

5x20mm,250V

+-

FUSE:

BATTERY:3V

LITHIUMRENATACR2450N

OREQUIV

MS/TP

EXPCOMM

-+

POWER24VAC

GND

GND

Power LED indicates 24VAC power status.

24 VAC power Observe polarity. See page 20.

Replaceable fuse See page 66.

Diagnostic LEDs provide operational and test status. See page 59 and page 64.

AC-2650 Jack to connect PC running HyperTerminal for initial configuration or comprehensive test feedback. See page 35.

Male DB-9 connector for direct-connect of BACtalk operator workstation or modem. See page 28.

Coin cell battery for real-time clock and nonvolatile data storage. Type DL2450 or equivalent. See page 66.

EXP communications Observe polarity. See page 25.

MS/TP communications Supports up to 10 BACnet MS/TP devices. Observe polarity. See page 27.

RJ-45 jack for BACnet Ethernet. LEDs provide communications information. See page 26.

Ground lug connects to panel ground. See page 19.



Figure 2 Typical EXP (I/O expansion module), EXP-1048 shown

EXP-1048ASSEMBLED IN USA

OPEN ENERGY MANAGEMENTEQUIPMENT 5K05

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

BO 0

BO 1

BO 2

BO 3

AO 0

AO 1

AO 2

AO 3

AO 4

AO 5

AO 6

AO 7

POWER: MAX LOAD - 68VA NO BO'S - 20VA24VDC SOURCE - 250mA TOTALCLASS 2 CIRCUITS ONLYUSE COPPER CONDUCTORS ONLYFOR INDOOR USE ONLY

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES. OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:

(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,

INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.

STATUS

LBL-

EXP1

048-

B

Status LED indicates 24VAC and communications status. See page 59.

Hand-Off-Auto (H-O-A) Switches for each output for manual override of output status. See page 60 and page 84.

IN and COM terminals for connection to universal inputs. See page 30.

Replaceable fuse See page 67.

BO banks with HOT terminals See Figure 7 and page 29.

Trimpots for tuning AOs from 0–100% when H-O-A is in H position. See page 60 and page 84.

Output LEDs indicate operational status of corresponding output.

Input configuration jumpers for each input are set according to input type. See page 30.

SW1 for EXP address Use switches 1-3 to set EXP address in the range 0–7. See page 25.

SW2 for AO configuration Each switch corresponds to an AO. See page 30.

AO terminals See Figure 10 and page 30.

Ground lug for connecting to panel ground. See page 19.

24 VAC power Observe polarity. See page 20.

EXP communications Observe polarity. See page 25 and Figure 7.



Figure 3 Ethernet implementation

Figure 4 Stand-alone implementation, showing optional connections to BACnet Ethernet and IP WAN with Annex J BACnet/IP and temporary operator workstation connection.

Ethernet

VLX

EXP

EXP

BACtalk operatorworkstation

BTI

Other BACnetdevices

Supervises energy management andautomation for connected equipment. MS/TP to

VLCs

Other EXPs, 8 max.

Supervises energymanagement andautomation globally.

Controlled equipment(176 I/O points max.)

MS/TP toVLCs

PortableBACtalkoperator

workstation

Ethernet

Ethernet (optional)

VLX

EXP

EXP

Supervises energy management andautomation for connected equipment.

Other EXPs, 8 max.



IP Router

Temporaryconnection (EIA-232)

Other Annex J BACnet/IP enableddevices.

MS/TP toVLCs



Figure 5 MS/TP implementation

Figure 6 Small building implementation

Ethernet

VLX

EXP

EXP


BTI MS/TP to VLCs,other devices

Other BACnetdevices


Other EXPs, 8 max.

MS/TP to VLCs,other devices

Ethernet

VLX

EXP

EXP



Other EXPs, 8 max.

MS/TP supportsup to 10 VLCs,other devicesModem

NOTE: The VLX can beused as a globalcontroller for up to 10MS/TP devices at alower price than aBTI-100.

VLC VLC

PTP connection



Figure 7 Communications connections for VLX and EXP


EQUIPMENT 5K05OPEN ENERGY MANAGEMENT

FOR INDOOR USE ONLYUSE COPPER CONDUCTORS ONLYCLASS 2 CIRCUITS ONLY24VDC SOURCE - 250mA TOTALPOWER: MAX LOAD - 20VA

INCLUDING INTERFERENCE THAT MAY CAUSE UNDESIRED OPERATION.AND (2) THIS DEVICE MUST ACCEPT ANY INTERFERENCE RECEIVED,

(1) THIS DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS:

THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES.

STATUS

LBL-

EXP2

200-

A



H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

BO 0

BO 1

BO 2

BO 3

AO 0

AO 1

AO 2

AO 3

AO 4

AO 5

AO 6

AO 7





STATUS

LBL-

EXP1

048-

B

LBL-

VLX-

A

CPU

SYS

ROC

DDC

FLASHING = NORMAL OPERATION

ON = NORMAL / READYOFF = SERVICE REQUIRED

ON = ROC LOADED / OPERATIONALOFF = ROC DOWNLOAD REQUIRED

FLASHING = DDC LOADED / OPERATIONAL

DIAGNOSTICS

POWER

VLXASSEMBLED IN USA


POWER: MAX LOAD - 20VA CLASS 2 CIRCUITS ONLYUSE COPPER CONDUCTORS ONLYFOR INDOOR USE ONLY




Ethernet Category 5 or better drop cable with RJ-45 jack. Recommended BACnet network connection. See page 26.

MS/TP Supports up to 10 BACnet MS/TP devices. See page 27.

PTP for serial connection of operator workstation or modem. See page 28.

AC-2650 to connect PC for HyperTerminal configuration or testing. See page 35 and page 64.

Panel ground to terminate shields and unit ground. See page 19.

EXP communications cable 18 AWG shielded twisted-pair. 18” (457mm) max. between units.

Terminating resistors 120 ohm matched precision terminating resistors at each end.

Shield Run one end to panel ground, tape back at other end. Tie through at intermediate EXPs.



Figure 8 VLX and EXP mounting dimensions



Figure 9 Typical power and BO load connections for VLX and EXPs. See page 19, page 20, and page 29.

24VAC

XFMR #1

GND

HOT A

BO 0

BO 1

HOT B

BO 2

BO 3

AO 0

COM

AO 1

AO 2

COM

AO 3

AO 4

COM

AO 5

AO 6

COM

AO 7

IN 0

COM

IN 1

IN 2

COM

IN 3

IN 4

COM

+24 VDC

IN 5

COM

IN 6

IN 7

COM

IN 8

IN 9

COM

+24 VDC

+-

MS/TP

EXPCOMM

-+

GND

XFMR #2

CR4 CR3 CR2 CR1

2.5A

24VAC

Panel ground

Fused AC

Fused AC source

24V relaysor similar 24VAC loads

COMM+

COMM-

GND

IN 0

COM

IN 1

IN 2

COM

IN 3

IN 4

COM

IN 5

+24 VDC

IN 6

COM

IN 7

IN 8

COM

IN 9

IN 10

COM

IN 11

+24 VDC

IN 12

COM

IN 13

IN 14

COM

IN 15

IN 16

COM

+24 VDC

IN 17

COM

IN 18

IN 19

COM

IN 20

IN 21

COM

+24 VDC

COMM+

COMM-

Ground block in panel

source

Panel ground

GND

24VAC

GND

24VAC

GND







STATUS

LBL-

EXP2

200-

A



H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

BO 0

BO 1

BO 2

BO 3

AO 0

AO 1

AO 2

AO 3

AO 4

AO 5

AO 6

AO 7





STATUS

LBL-

EXP1

048-

B

LBL-

VLX-

A

CPU

SYS

ROC

DDC

FLASHING = NORMAL OPERATION

ON = NORMAL / READYOFF = SERVICE REQUIRED

ON = ROC LOADED / OPERATIONALOFF = ROC DOWNLOAD REQUIRED

FLASHING = DDC LOADED / OPERATIONAL

DIAGNOSTICS

POWER

VLXASSEMBLED IN USA


POWER: MAX LOAD - 20VA CLASS 2 CIRCUITS ONLYUSE COPPER CONDUCTORS ONLYFOR INDOOR USE ONLY






Figure 10 Analog input (AI) and analog output (AO) wiring







STATUS

LBL-

EXP2

200-

A



H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

H-O-A

BO 0

BO 1

BO 2

BO 3

AO 0

AO 1

AO 2

AO 3

AO 4

AO 5

AO 6

AO 7





STATUS

LBL-

EXP1

048-

B

Analog Inputs (AIs) connect with 18 AWG shielded twisted-pair. See page 30.

Shield drains terminate one end at panel ground. Tape back at other end.

Analog Outputs (AOs) connect with 18 AWG shielded twisted pair. See page 30.


Installation and Operations Guide | About the VLX and EXPs

About the VLX and EXPsThe VLX is significantly different from earlier Alerton field controllers. It introduces new architecture concepts, new configuration procedures, and new installation practices. Review this section carefully before you install and configure the VLX.

Operational overviewVLX and EXP operation is interdependent. The VLX is the processor. EXPs are external modules that provide all I/O capability. EXPs connect to the VLX over a simple 18 AWG shielded, twisted-pair bus. The VLX hosts automation features (schedules, trendlogs, and alarms) and DDC for any BACnet device on the network. Each VLX supports up to eight EXPs for a possible 176 I/O points.

The VLX supports BACnet Ethernet and MS/TP connections1, making EXPI/O, operational, and functional data available to the site-wide automation system as BACnet objects and properties. Each VLX/EXP assembly appears to a BACnet network as a single BACnet device. The VLX also supports Annex J BACnet/IP as a BACnet broadcast management device (BBMD).

After a VLX is configured and programmed using a BACtalk operator workstation, it can operate in a stand-alone capacity indefinitely.

The VLX provides a robust and customizable I/O configuration for systems with a large number of control points and requirements for local execution of DDC, scheduling, and other automation features. Typical applications include large air-handling units, motor control centers, and chiller plants. A single VLX/EXP assembly replaces the functionality of multiple VLCs with a global controller. It can also operate in concert with a global controller.

The numerical designation of an EXP conveys information about its I/O configuration. The first number indicates the number of universal inputs, the second indicates the number of binary outputs, and the third indicates the number of analog outputs.

1. Connection over MS/TP should be used only when data traffic requirements will be relatively low and Ethernet connection is cost-prohibitive or otherwise difficult to provide. Ethernet is the preferred connection method to the BACnet internetwork. The total number of VLCs on MS/TP should be limited to 20 or fewer, and the total number of VLX trendlogs should be limited to 15 or fewer, with a minimum sample interval of 30 seconds. Other factors will affect network performance such as global-controller-hosted VLC point alarms, global controller DDC references to devices on the MS/TP, and active operator workstations requesting data from devices on the MS/TP.

EXP-1048

Ten inputs

Four binary outputs

Eight analog outputs



What’s new in the VLX• Capabilities of the VLX. The VLX can support up to 10 BACnet

compliant devices on its MS/TP trunk. The VLX can also host schedules, trendlogs, and alarms.

• Procedures for initial configuration and I/O setup. Connect with an AC-2650 and use HyperTerminal to configure network and firmware settings. See “Initial firmware and operator workstation setup” on page 35. The VLX does not support I/O configuration through this interface or through VisualLogic, however. Use an operator workstation to configure special-purpose AVs. See “Setting up inputs” on page 48. Data display templates are provided for this purpose. See “Appendix C: BACtalk operator workstation templates” on page 70.

• Power and BO wiring. BO power is isolated from EXP and VLX power. A separate ground lug connects to panel ground. See Figure 9 on page 13 and “Single-point grounding” on page 19.

• 4-20 mA wiring. No external 250 ohm resistor required. See “Universal inputs (AIs, BIs)” on page 30.

• Manual output overrides: H-O-A switches and trimpots. Hand-Off-Auto switches enable local override of binary and analog outputs. Status values are available in software. See “Using H-O-A switches and trimpots” on page 60 and “Appendix F: H-O-A and trimpot status values” on page 84.

• Backup mode operation. If an EXP loses VLX communication, it goes into backup mode, commanding outputs to backup mode values. See “Backup mode sequence of operation” on page 61.

• DDC programming. Supports peer-to-peer DDC programming for both reads and writes over Ethernet. Use Global Controller/Building Controller DDC to program DDC, not VLC DDC.

• Out-of-Service for AIs, AOs, BIs, and BOs. Set the out-of-service property for inputs and outputs to TRUE to simulate inputs and operating conditions without affecting outputs (use H-O-As and trimpots to set operating status). This can be useful for testing DDC and automation sequences. This operation is different from VLCs, where setting out-of-service = TRUE causes DDC alone to control the output. See “Appendix E: BACnet object and property reference” on page 72.

• PTP modem support. The VLX also supports an external modem connected through its EIA-232 port. This modem is suitable for alarm dialout.

CompliancesThe VLX makes operational and functional data available to the automation system as BACnet objects and properties in accordance with ANSI/ASHRAE Standard 135-2001, BACnet.

The VLX/EXP assembly appears to BACnet as a single device. EXPs are not by themselves BACnet-enabled. An EXP requires a VLX to operate and to make data available as BACnet objects and properties.


Installation and Operations Guide | About the VLX and EXPs

The VLX connects to the BACnet internetwork over BACnet Ethernet (preferrred method) or MS/TP network. The VLX supports Annex J BACnet/IP and functions as a BACnet broadcast management device (BBMD). See Table 11 on page 44 and the BACtalk System Design Guide.

See “Appendix E: BACnet object and property reference” on page 72 for a reference of objects and properties the VLX supports.

BACtalk for Windows version 3.11, Envision for BACtalk version 1.0 or later is required to set up the VLX.

Restrictions• Do not exceed 10 BACnet devices on the VLX MS/TP trunk.

• Although an MS/TP connection is present, Ethernet is the preferred method of connecting the VLX to the BACnet internetwork and to the BACnet operator workstation. If MS/TP is the method of connection to the BACnet internetwork, the inherent bandwidth limitations of MS/TP may compromise VLX performance.

• EXPs do not support the BACtalk Microset or Microset II.

• Does not support Zones (Optimum Start), Demand Limiting, or Tenant Activity objects.

• Does not support sending alpha messages to an alpha-numeric pager. However, you can send numeric messages to an alpha-numeric pager.



Hardware installationThis section provides information about mounting the VLX and EXPs and connecting power, communications, and I/O.

MountingEach VLX and EXP consists of a circuit board with a plastic cover, which has screw holes for mounting. VLXs and EXPs have the same mounting dimensions. See Figure 8 on page 12.

All VLXs and EXPs are suitable for indoor mounting only. Mount the VLX and EXPs in a location and manner acceptable to the local authority having jurisdiction.

Use a common enclosure to house the VLX and EXPs. Select an enclosure suitable for your application and acceptable to the local authority having jurisdiction. Ensure the enclosure has a ground bus connected to a ground known to be suitable for this purpose. See “Single-point grounding” on page 19.

Note It is acceptable to mount some EXP modules in a separate enclosure from the VLX provided the enclosures are immediately adjacent and the EXP communication bus runs in conduit that does not contain any high voltage wiring.

Ensure that the installed location is dry, away from direct sunlight, and free from excessive dust, vibration, and electrical interference.

For optimum performance, ensure adequate separation of power and communications cabling. Typically, power cabling is run though one side of the enclosure (left) and communications cabling through another (right).

Ensure that there is adequate access to units so that technicians can easily:

• Terminate communications and power wiring

• Remove and replace units, if necessary

• Remove the cover, if necessary

• Replace the battery, if necessary

• Replace the fuse, if necessary

• Monitor LEDs during operation

VLXs and EXPs can be mounted in any vertical or horizontal orientation.

Table 2 Operating temperature range and humidity for VLXs and EXPs

Operating temperature 32–131°F (0–55°C)

Humidity 0–95% RH, non-condensing


Installation and Operations Guide | Hardware installation

Single-point groundingProper grounding is an essential element of trouble-free VLX and EXP operation. Improper grounding is often the cause of communication errors, analog and binary I/O inaccuracies, and even equipment damage. Furthermore, the problems that result from improper grounding can be intermittent and difficult to diagnose.

The single-point grounding shown in wiring diagrams and described in the sections on power, communications, and I/O wiring is designed to minimize the potential for problems associated with differences in ground potentials and electrical transients (noise).

A single-point grounding practice, combined with separate 24 VAC power for the BO loads (see Figure 9 on page 13), will help ensure an installation free from problems related to improper grounding.

Panel groundThe panel you select to house the VLX and EXPs must have a ground bus that connects to a ground known to be suitable for this purpose. To ground the panel bus, direct attachment to the closest point in the building’s electrical service grounding electrode system is preferred. However, slight variations in grounding practices may exist from one building to another. Because of these variations, consulting with the building electrical contractor about the best possible location and method to ground the panel bus is advised.

Once the panel bus is properly grounded, it can be used to terminate grounded components of power, communications, and I/O wiring as shown in those sections.

Ground lug on VLXs and EXPsThe ground lug on VLXs and EXPs must directly connect to panel ground using stranded 12 AWG copper cable. When grounding, ensure that the cable is properly positioned and secured. See Figure 11.

WARNING Do not overtighten the ground-lug screw. Excessive torque will separate the terminal from the unit and cause the connection to fail.

Figure 11 VLX and EXP ground lug (GND) detail

Ground screw

Termination platform

Circuit board

Warning! Do not insertground cable here.

Insert ground cable here andtighten screw to secure



Power connectionsThis topic provides information for wiring power to a VLX/EXP assembly. As a general rule, use one transformer to supply power to the VLX and EXPs and use one or more additional transformers to power BOs on the EXPs. See “Key illustrations” on page 7 for wiring diagrams.

VLXs and EXPs use a half-wave rectifier to convert the AC power supply to onboard power. This enables several VLXs and EXPs to be powered from a single transformer. Ensure that the transformer is sized appropriately to handle the VLX and EXPs. See “Transformer sizing” on page 22 for transformer sizing procedures.

Using terminal blocksVLXs and EXPs use removable, header-style terminal blocks to simplify field wiring of power, communications, and I/Os. If desired, you can remove the terminal blocks from the circuit board header pins, terminate cable, and re-seat the block when you finish.

� To terminate cable to a VLX or EXP

1. Strip a maximum of 3/8" (0.95 cm) of the wire jacket from the end of the cable.

2. Use a small screwdriver (1/8'' max.) to turn the adjustment screw fully counter-clockwise.

The clamps in the wire slot separate as you turn the screw.

3. When the clamps in the wire slot are fully open, insert the stripped end of the cable (try to get the jacket flush with the terminal block). Be sure to insert all cable strands into the wire slot.

4. Hold the cable in place and turn the adjustment screw clockwise to tighten it until the clamps in the wire slot secure the cable.

5. Tug gently on the cable to ensure that it’s securely terminated.

Figure 12 Terminal block detail

Header pins

Adjustment screw

Wire slotTerminal block



WARNING Do not connect 24 VAC terminals to ground. This will damage the VLX, EXP, or transformer. Maintain polarity of the power connection among all devices sharing power.

WARNING Half-wave devices and full-wave devices can’t use the same AC transformer. Equipment damage will result. If a VLX shares a transformer with other devices, ensure all devices use a half-wave rectifier.

VLX powerThe VLX requires a 24 VAC, 50-60 Hz, 20 VA minimum power supply. Use a UL Listed 24 VAC transformer. Transformer sharing between VLXs and EXPs is allowed. Ensure that the transformer is appropriately sized for all components it will power. See “Transformer sizing” on page 22.

Power terminals for the VLX are located on the upper right of the unit.

See “Key illustrations” on page 7 for power wiring diagrams.

Low voltage threshold A VLX will not function properly when supply power drops below 17 VAC. The VLX can be expected to function normally when supply power rises above 20.5 VAC.

EXP unit powerEach EXP requires a 24 VAC, 50–60Hz, 20 VA minimum power supply for the unit only (no BOs). Use a UL Listed transformer. Transformer sharing between EXPs and VLXs is allowed. Ensure that the transformer is appropriately sized for all components it will power. EXP power consumption can range from a minimum of 10 VA to a maximum of 20 VA, depending on the number and type of input devices connected.

WARNING Do not share VLX or EXP power with any VLC. VLCs require an independent 24 VAC power source.

Power terminals for EXPs are located on the upper right of the unit.

See Figure 9 on page 13 for power wiring diagrams.

Table 3 VLX power terminals

Label Description

24 VAC Use to terminate the hot leg of the 24 VAC circuit. Can also be jumpered to 24 VAC terminal on other EXPs for transformer sharing. DO NOT CONNECT THIS TERMINAL TO GROUND. EQUIPMENT DAMAGE WILL RESULT.

GND Use to terminate the grounded leg of the 24 VAC circuit. Can also be jumpered to GND terminal on other EXPs for transformer sharing. Onboard connection to GND lug.



WARNING Always provide a separate transformer for EXP unit power and EXP BO power. Powering BOs and the EXP unit from the same power supply will cause interference and may damage the EXP.

Low voltage threshold An EXP will shut down all function when supply power drops below 18 VAC. Normal operation resumes when supply power rises above 20.5 VAC.

Transformer sizingThe transformer(s) that provide unit power to the VLX and EXPs, as well as the transformer(s) that provide EXP BO or VLC power, must be adequately sized.

For VLX and EXP unit power, the Nameplate VA rating of the transformer must be at least 125% of the sum of the unit maximum load ratings on the unit covers. For VLC and BO power, the Nameplate VA rating of the transformer must be at least 125% of the BO maximum load rating listed on the unit covers.

Example The application consists of:

• 1 VLX

• 1 EXP-10120

• 1 EXP-1048

• 1 EXP-2200

� Determine the size of the transformer for unit power

1. Find the unit power rating on the VLX and EXP covers. For the VLX, this is listed as “POWER: VLX MAX LOAD.” For EXPs, this is listed as “POWER: EXP MAX LOAD.”

2. Add the power required by all devices

3. Multiply by a 25% safety factor:

80VA X 1.25 = 100 VA

Table 4 EXP power terminals

Label Description

24 VAC Use to terminate the hot leg of the 24 VAC circuit. Can also be jumpered to 24 VAC terminals on other EXPs for transformer sharing. DO NOT CONNECT THIS TERMINAL TO GROUND. EQUIPMENT DAMAGE WILL RESULT.

GND Use to terminate the grounded leg of the 24 VAC circuit. Can also be jumpered to GND on EXPs for transformer sharing.

Quantity Device Power required

1 VLX 20 VA

1 EXP-10120 20 VA

1 EXP-1048 20 VA

1 EXP-2200 20 VA

Total: 80 VA



This design requires a transformer with a Nameplate rating of 100 VA (or in excess of 4 Amps @ 24 V) to adequately provide unit power to the VLX and its three EXPs. This serves only to supply unit power, and a separate transformer must be used to supply BO power.

� Determine the size of the transformer for EXP BO power

1. Find the BO rating on each EXP. This is listed as “BO MAX LOAD.” Each BO draws up to 12 VA from the AC source.

2. Add the power required by all devices

3. Multiply by a 25% safety factor:

192 VA X 1.25 = 240 VA

This design requires a second transformer with a Nameplate rating of 240 VA (or 10 Amps @ 24 V) to adequately provide power to BOs.

A 10 Amp fuse on the hot leg of the 24 VAC power supply is recommended.

Selecting cable for 24 VAC powerIf you are considering long power supply wiring runs, using the right cable is critical. If the cable is too small, the resistance may be too high, resulting in a low voltage supply. This is known as line loss. The cable size is based on the length of the run and the current draw of the units or loads to be powered. Use Figure 13 to determine cable size in AWG. Obtain additional information from the transformer manufacturer.

Device BO MAX LOAD

EXP-10120 144 VA

EXP-1048 48 VA

EXP-2200 0

Total: 192 VA



Figure 13 Cable-selection chart for 24 VAC. Find intersection of distance (Feet of Wire) and current (VA) and then read the diagonal line to the right to select appropriate wire size in AWG.

22 AWG 20 AWG 18 AWG

16 AWG

14 AWG

12 AWG

1

10

100

10 100 1000 10000

Feet of Wire

VA



Example Transformer for the EXP-1048 (48VA max.) is 110 ft. from the EXP.

� To determine the type of wire to use

1. Find the maximum current draw of the EXP (for the EXP-1048, 48VA).

2. Find the intersection of 48VA on the vertical (y) axis of the chart and 110 ft. on the horizontal (x) axis.

3. Read the diagonal line to the right of the intersection point. In this case, this is the 14 AWG wire line. Use 14 AWG wire or larger. (A smaller AWG designation indicates larger wire.)

Communications connectionsThis topic describes hardware network connections to the VLX and EXPs. Firmware configurations performed over a HyperTerminal connection are important for connectivity. See “Connecting to the VLX with HyperTerminal” on page 35.

CAUTION Set up firmware before physically connecting networks. This will help avoid potential network conflicts and communication errors.

See the BACtalk System Design Guide (LTBT-TM-SYSDSGN) for detailed information about network architecture.

EXP communications busThe VLX and EXPs communicate over a simple, twisted-pair communications bus. Up to eight EXPs can connect to a single VLX in a multi-drop configuration. See Figure 7 on page 11 for a wiring diagram.

Terminal identification On the VLX, terminals for the EXP communications bus are on the lower right, labeled EXP COMM + and EXP COMM –. On EXPs, terminals are on the upper right, labeled COMM + and COMM –.

12 AWG

14 AWG

16 AWG

18 AWG20 AWG22 AWG1

10

100

10 100 1000 10000

Feet of Wire

VA

48VA

110 ft.



CAUTION Software references data in EXPs by EXP address. Ensure that the addresses you set comply with engineering schematics and planned sequences of operation. See “Identifying input and output objects” on page 53 for more information about referencing EXP data.

EthernetEthernet is a high-speed LAN widely installed in commercial buildings. Ethernet is the preferred method of connecting the VLX to a BACnet internetwork.

Twisted-pair Ethernet networks use four conductors (two twisted-pair wires) to carry the network signal. The first pair carries the transmit signal positive and negative. The second pair carries the receive signal positive and negative.

The VLX has an onboard Ethernet network interface card (NIC) that supports 10Base-T (10 Mbps) and 100Base-TX (100 Mbps) Ethernet connections to the BACnet internetwork. The VLX will automatically switch to 100 Mbps operation if other devices and cabling support it.

Cable type and length Use 18 AWG, shielded, twisted-pair cable. Maintain polarity throughout the EXP communications bus. Distance between units—VLX-to-EXP and EXP-to-

EXP—cannot exceed 18'' (45.72cm).a

Terminating resistors Matched precision resistors are required at each end of the bus. Wire the resistors across + and –. Precision resistors rated 120 ohm 1/4W ±5% are recommended.

Shield grounding Terminate shield drain at VLX end to panel ground. Tie shield drain through with wire nut at each intermediate EXP. Tape shield drain back at last EXP.

EXP addressing Each EXP on the communications bus has a unique address from 0–7. Use the DIP-switch bank labeled SW1 on the left of the EXP to set the address. Use DIP switches 1–3 for addressing (switch 4 is not used for addressing).

a. If the VLX and associated EXPs are installed in adjacent enclosures, connected by conduit, the EXP communications line that runs between the enclosures may be up to 60” (1,524 mm).

Table 5 DIP SW1 settings for EXP addresses

DIP Position ( = ON)

EXP Address 1 2 3

0

1

2

3

4

5

6

7



See the System Design Guide (LTBT-TM-SYSDSGN) for Ethernet and IP architecture details.

MS/TPMS/TP is a LAN standard designed specifically for BACnet applications. It uses the EIA–485 signaling standard on twisted-pair cabling in a simple bus configuration.

Use MS/TP to connect up to 10 BACnet MS/TP devices to the VLX. See Figure 5 on page 10 for more information. Do not connect the VLX to the BACnet internetwork using MS/TP unless data traffic requirements are relatively low and Ethernet connection is cost-prohibitive or otherwise difficult to provide. Ethernet is the preferred connection method.

When connecting a VLX using MS/TP, the total number of VLCs on that MS/TP should be limited to 20 or fewer, and the total number of VLX trendlogs should be limited to 15 or fewer, with a minimum sample interval of 30 seconds. Other factors will affect network performance such as global-controller-hosted VLC point alarms, global controller DDC references to devices on the MS/TP, and active operator workstations requesting data from devices on the MS/TP.

Ethernet RJ-45 jack An RJ-45 jack for connection to Ethernet is on the upper left of the VLX. Pin designations for the RJ-45 jack (perspective is looking into the jack) are shown.

Cable type and length Use an approved Category 5 or better Ethernet drop cable with RJ-45 plugs to connect the VLX to an Ethernet hub or switch. Use professionally manufactured cables and a hub or switch that supports 100 Mbps for best results.

The VLX does not implement internal crossover. Use a straight-through or crossover cable as appropriate for the device that the VLX connects to. For example, if the VLX connects directly to an operator workstation without a hub, a crossover cable most likely will be required. See the BACtalk System Design Guide (LTBT-TM-SYSDSGN) for details about crossover cabling.

Terminal identification Terminals for MS/TP are on the left of the VLX and are labeled MS/TP + and MS/TP –.

+ _ _+

PR1XMIT

PR2RCV

1 2 3 4 5 6 7 8

Pin Assignment

1 Transmit +

2 Transmit –

3 Receive +

6 Receive –



Direct-connect to the VLXYou can use the EIA-232 port on the VLX to direct-connect a BACtalk operator workstation to the VLX using a NULL modem cable.

The VLX also supports an external modem connected through its EIA-232 port. This modem is suitable for alarm dialout.

Connection details are set up using the PTP options in the HyperTerminal configuration. See “Setting PTP options” on page 42.

EXP I/OThis topic describes physical connections for EXP inputs and outputs. It does not cover software configuration and use. Software configuration of inputs is required for proper operation. See “Setting up inputs” on page 48 and “Setting backup mode values for AOs and BOs” on page 51 for information on

Cable type and length BACnet specifies shielded, twisted-pair cabling with characteristic impedance between 100 and 130 ohms. Distributed capacitance between conductors must be less than 30 pF/foot (100 pF/m). Distributed capacitance between conductor and shield must be less than 60 pF/foot (200 pF/m). Foil or braided shield is acceptable.

Alerton recommends Connect Air # W221P-2554 or W221P-1502, which Alerton has tested and found to perform well.

Maintain polarity throughout the MS/TP segment.

Terminating resistors Matched precision resistors are required at each end of the MS/TP segment. Wire the resistors across + and –. Precision resistors rated 120 ohm 1/4W ±5% are recommended.

Shield grounding Terminate shield drain at one end of the MS/TP segment to ground. Tie shield drain through with wire nut at each intermediate device and insulate to avoid potential ground contact. Tape shield drain back at other end of segment.

Table 6 DB-9 pin assignments for EIA-232 PTP connections

Pin Use

1 No connection (N/C)

2 RXD

3 TXD

4 DTR

5 GND

6 DSR

7 RTS

8 CTS

9 N/C



configuring I/Os in software. See “VLX data, DDC, and automation” on page 53 for information about using I/O data.

WARNING Before connecting equipment to EXP I/O, ensure that DDC and automation features have been thoroughly tested to confirm adherence to the engineered sequence of operations.

Binary outputs (BOs)EXP BOs are arranged in groupings, or banks. Outputs are labeled BO n. Each output has a software-controlled, onboard connection to the HOT terminal for its output bank. HOT terminals are labeled HOT A, HOT B, and so on.

Terminal identification HOT terminals connect to the hot leg of a 24 VAC transformer that is used exclusively for BO power. BO terminals connect to the ungrounded side of the 24 V relays or other 24 VAC loads. See Figure 9 on page 13 for a wiring diagram.

Cable Use 18 AWG cable for BO connections in most applications.

Providing isolated BO power BOs on the EXP require a power supply separate from the EXP or VLX unit power supply. This isolates the switched-load BO power from the EXP/VLX unit operating power, which helps to prevent interference and electrical feedback noise from the switched outputs affecting EXP operation.

Each EXP BO can deliver a maximum of 12 VA (24 VAC @ 0.5A). Each EXP that supports BOs has a “BO MAX. LOAD” listed on the cover, which indicates the maximum consumption in VA when all BOs are energized.

Always use this BO MAX. LOAD figure to determine the size and number of transformers required to power BO loads. Even if all BOs are not currently used, this ensures that the transformer(s) will not need to be exchanged to accommodate future additions.

Any number of BOs can share a transformer, as long as the transformer is adequately sized. See “Transformer sizing” on page 22.

A fast fuse is recommended on the hot leg of the 24 VAC BO power circuit to prevent equipment damage from a shorted or faulty relay, a failed damper

Table 7 EXP BO terminals

Terminal label Description

HOT <A|B|C|D> Use to terminate the hot leg of the 24 VAC circuit. This terminal has switched, software-controlled, onboard connections to the BO n terminals adjacent to it. For transformer sharing between BO banks, jumper HOT terminals together with 18 AWG wire. See Figure 9 on page 13. DO NOT CONNECT THIS TERMINAL TO GROUND OR EQUIPMENT DAMAGE WILL RESULT.

BO n Use to connect to the ungrounded side of the 24 V relay or other 24 VAC load. DO NOT CONNECT THIS TERMINAL TO GROUND AND MAINTAIN POLARITY FOR ALL CONNECTED LOADS OR EQUIPMENT DAMAGE WILL RESULT.



actuator, a failed transformer, or other wiring or system faults. Size the fuse at 125% of the sum of all loads powered by the transformer.

Analog outputs (AOs)AOs provide an electrical output signal in response to a software control signal of 0–100. For EXPs with AOs, the AO is configured with DIP switches to provide either a current (0–20mA) or voltage (0–10VDC) output.

Universal inputs (AIs, BIs)Universal inputs on EXPs can accept a variety of input types. Typically, a sensor, transducer, or other device produces an output signal that is wired to an input terminal on the EXP. All EXP inputs are set up with jumpers.

Inputs on the EXP can be configured to accept:

• Resistance (10K ohm or 3K ohm thermistors or potentiometers)

• Voltage (0–10VDC, 0–5VDC)

• Current (4–20mA)

• Dry contact

• Solid-state (transistor) switch

• Pulse-type inputs (IN-1, IN-2, and IN-3 only)

All inputs require software configuration. See “Setting up inputs” on page 48 for details.

Terminal identification Terminals labeled AO n connect to the positive side of an analog load. The immediately adjacent COM terminal connects to the negative side.

Cable Use 18 AWG, shielded, twisted-pair wire for all AO connections.

Shield grounding Ground only the EXP side of the cable shield to panel ground.

Do not ground both sides of the shield. Differences in ground potential may exist from one end to the other and cause current on the shield.

DIP switch settings The DIP switch bank for AO configuration is beneath the EXP’s hinged cover doors and labeled “AOs.” DIP switch numbers correspond directly to AO numbers. DIP 1 corresponds to AO-0, DIP 2 to AO-1, and so on. Additional DIP switches may be present and are unused. Set a DIP switch to the ON position for 0–20 mA, OFF for 0–10 VDC.



After general information about cable, shield grounding, and jumper location, this section provides individual connection details and jumper settings for the most common input types.

Resistive inputs (thermistors and potentiometers)Wire the potentiometer leads across the desired IN terminal and the adjacent COM terminal. No polarity.

Set jumper to position 1.

Note The VLX and EXPs do not support the Microset or Microtouch.

Dry contact inputsDry contact inputs are electrically identical to resistive inputs. Wire the input leads across the desired IN terminal and the adjacent COM terminal. No polarity.

Note After installation of the dry contact input, it is helpful to test that the contact produces appropriate count values as wired to produce ON and OFF signals. See “Inputs (AIs and BIs)” on page 54.

Set the input jumper to position 1.

4–20mA inputsWiring scenarios depend on the type of 4-20mA device. For two-wire devices, the +24 VDC output terminal on the EXP can provide power.

Terminal identification Terminals for inputs are labeled IN n. See the specific wiring guidelines for the type of input for wiring instructions.

Cable Use 18 AWG, shielded, twisted-pair wire for all input connections.

Shield grounding Ground only the EXP side of the cable shield to panel ground.

Do not ground both sides of the shield. Differences in ground potential may exist from one end to the other and cause current on the shield.

Jumper identification Jumpers for input configuration are labeled according to the input they affect. J1 corresponds to IN 1, and so on. Each jumper is located beneath the hinged cover doors beside the input terminal it affects.

2 3 4 51

2 3 4 51



Note Unlike Alerton VLCs, 4–20mA inputs on EXPs DO NOT require an external 250 ohm resistor. Setting the jumper to position 2 places an onboard 250 ohm resistor in the circuitry.


0–5VDC inputsFor three-wire devices, the 24VDC terminal on the EXP can provide a power source to 250mA maximum, which typically connects to the plus (+) terminal on the device. Connect the device’s signal output, typically identified as Signal or Output +, to the appropriate IN terminal. Connect the device’s output common (typically identified as Output Common, Output –, or –) to the nearest COM terminal.

Figure 14 Typical wiring scenarios for 4–20mA input devices

2 3 4 51

EXPTerminals

Two-wire 4–20 mA device,power from EXP

+

-

COM

IN

+24 VDC

One side of shield to ground

+ –

External 24 VDCPower Supply

Two-wire 4-20mA device,external power supply

+

–

COM

IN

+24 VDCOne side ofshield to ground

+

-VAC

VAC

External 24VAC powersupply*

Four-wire 4-20 mA device

COM

IN

*Do not use transformer powering the EXP because 4-wire devices typically incorporate full-waverectified power in their circuitry. Verify with particular mfg./model.





0–10VDC inputsFor three-wire devices, the 24VDC terminal on the EXP can provide a power source to 250mA max., which typically connects to the plus (+) terminal on the device. Connect the device’s signal output, typically identified as Signal or Output +, to the appropriate IN terminal. Connect the device’s output common (typically identified as Output Common, Output –, or –) to the nearest COM terminal.


Solid-state switch inputsSolid-state (transistor) switches can be wired to EXP input terminals. The switch must be listed as acceptable for switching DC currents or for direct connection to programmable logic controllers (PLCs) or DDC controllers. The DC switch must use a transistor on the output. Maintain polarity.

Figure 15 Typical wiring for three-wire 0–5VDC device

Figure 16 Typical wiring for three-wire 0–10VDC device.

2 3 4 51

COM

IN

+24VDC

EXP terminals0–5 VDC device


SIG

–

+

2 3 4 51

COM

IN

+24VDC

EXP terminals0–10 VDC device


SIG

–

+



Note It is helpful to test that the device produces appropriate count values as wired to produce ON and OFF signals. Off-state leakage (if present) or other factors may result in inappropriate software counts. See “Inputs (AIs and BIs)” on page 54.


Pulse-type inputsPulse-type inputs can be wired only to IN 1, IN 2, or IN 3 on EXPs.

The device that generates pulse data should use contacts suitable for low current (gold contacts) or a solid-state (transistor) switch. The pulse-width range is 10 ms to 327 seconds. Pulse width is measured from successive rising edges of consecutive pulses (see Figure 17).

CAUTION High-frequency (appx. 100Hz) pulse inputs may cause up to a 50% error in the reported rate and consumption values for the sample in which the error occurred. Avoid high-frequency pulse inputs whenever possible.

Set the jumper to position 1.

Figure 17 The VLX/EXP reads pulse data from successive leading edges

2 3 4 51

2 3 4 51

Pulse 1(80 ms)

Pulse 2(60 ms)

Pulse 3(100 ms)


Installation and Operations Guide | Initial firmware and operator workstation setup

Initial firmware and operator workstation setupThis topic provides instructions for connecting to the VLX using an Alerton AC-2650 cable and a terminal emulation program, such as HyperTerminal, for initial firmware configuration.

This topic provides information about:

• Connecting to the VLX with HyperTerminal, the recommended terminal emulation program

• Setting up network and other operational parameters using HyperTerminal

• Using an operator workstation to add the VLX to your system and set configuration values

WARNING Configuration from the operator workstation requires an understanding of how VLX objects and properties are identified. Review “VLX data, DDC, and automation” on page 53 to understand this information. If you’re not familiar with BACnet’s object-oriented method of representing data, see the BACtalk Programmer’s Guide and Reference (LTBT-TM-PRGRMR).

Connecting to the VLX with HyperTerminalFor initial configuration, use an Alerton AC-2650 cable connected to the COM port on a personal computer and to connector J3 on the lower left of the VLX.

IMPORTANT You must have an Alerton AC-2650 cable and a computer with a free 9-pin COM port and terminal emulation program, such as HyperTerminal. Configuration cannot be performed through the PTP port or by modem.

The VLX must be connected to power during setup.

Configuration testing was performed with HyperTerminal in a Windows environment. Use HyperTerminal for best results.

Connection issues are often attributed to a disabled PC COM port or a non-standard COM-port configuration. Use your Windows Device Manager or your computer’s BIOS setup if your COM port doesn’t appear to be working.

CAUTION It is highly recommended that you connect to the device and configure it before physically connecting to networks to minimize the potential for network conflicts.

Configuration parameters are stored in persistent memory and EEPROM. You can perform configuration tasks off-site, if necessary, remove power, and the VLX will retain settings.



� To connect to the VLX and start a HyperTerminal session

1. Connect the computer to the VLX with an AC-2650 cable. Attach one end to the computer’s 9-pin serial port (note the COM port), the other to the AC-2650 jack on the VLX (see Figure 1 on page 7).

2. Start HyperTerminal, which is typically under Programs/Accessories on the Windows Start Menu.

HyperTerminal prompts you to start a connection profile in the Connection Description dialog box.

3. Type a Name for the new connection, select a different icon if desired, and then click OK.

4. In the Connect To dialog box, from the Connect Using list, choose the COM port that the AC-2650 cable is connected to and then click OK.



5. HyperTerminal prompts you to provide connection properties. In the connection properties dialog box, choose the settings shown and then click OK.

The setup window closes, and the HyperTerminal window is blank with a blinking cursor.



6. Press Enter on your computer keyboard to initialize the session with the VLX.

The VLX Configuration and Diagnostics Utility screen appears.

TIP If the Configuration and Diagnostic Utility screen doesn’t appear immediately, keep pressing Enter. The VLX may take several seconds to respond to the keyboard command. If the VLX still doesn’t respond, check that:

1. The AC-2650 cable is still connected to the VLX and the PC.

2. The PC COM port matches the one you specified in step 4.

3. Hyperterminal settings are correct (see “Appendix D: HyperTerminal settings” on page 71).

4. The VLX is powered up.

Then try again. Once you successfully connect, save the session. You can then use it to connect to any VLX.

MS/TP settings indicate the network number, MS/TP MAC address, and transmission speed of the VLX.

Ethernet Network Number indicates the BACnet network number assigned to the Ethernet network.

DDC indicates the DDC file loaded by file name and rep/job. Blank if none loaded.

Application indicates the ROC version.

Firmware Revision

Loader Revision indicates the boot code revision.

Device Instance indicates the BACnet device instance assigned to the VLX.

MAC indicates the VLX’s Ethernet MAC address. This may be useful if using a network sniffer for troubleshooting.



7. Type the case-sensitive configuration password (pass), and then press Enter to view the Change Configuration menu.

8. From the File menu in HyperTerminal, choose Save to save the VLX connection as a session file (*.ht). This saves the HyperTerminal session setup for later use. No VLX configuration data is saved.

Navigating, entering data, and saving your workThis topic provides general instructions for navigating menus, entering and saving data, and correcting entries while working with a HyperTerminal connection.

If you make a typing error, press the backspace key to correct it. If you enter the wrong selection or menu item, retype the value for that field, and then press Enter to exit the field.

� To change parameters in the VLX Configuration and Diagnostic Utility

1. Type the letter of the menu you want to display or the item you want to change, and then press Enter.

2. To change a value, type the new value, and then press Enter to set it.-or-To go to a submenu, type the letter of the item, and then press Enter.

� To return to the previous screen

• Type Z, and then press Enter.

After you make changes in HyperTerminal, you must exit appropriately to save your changes to the VLX.

CAUTION You will lose changes if you close the HyperTerminal session or disconnect without saving.

� To save changes

1. Press Z until the Main menu appears.

2. Press X to exit.

The VLX Diagnostic and Configuration Utility prompts you to save your changes.



3. Press Y, and then press Enter.

The VLX restarts.

4. Close HyperTerminal.

Using the Change Configuration menuThe Change Configuration menu enables you to set network and device configurations. If necessary, you can make and save changes, disconnect power, and the VLX will save the setup until the unit is powered up again.

Setting the Device Instance The device instance is item A on the Change Configuration menu.

The device instance is a unique number throughout the BACnet internetwork that identifies the device for BACnet communications. Valid range for the device instance is 0 to 4,194,303. For more detailed information about device instances, see the BACtalk System Design Guide (LTBT-TM-SYSDSGN).

Setting Ethernet options Ethernet network settings are items B, C, and D on the Change Configuration menu. Select options according to Table 8.

See the BACtalk System Design Guide (LTBT-TM-SYSDSGN) for more information about Ethernet and IP configurations.

Figure 18 The Change Configuration menu of the VLX Configuration & Diagnostic utility



Setting MS/TP options MS/TP network settings are items E, F, and G on the Change Configuration menu.

See the BACtalk System Design Guide (LTBT-TM-SYSDSGN) for more information about MS/TP configurations.

Use MS/TP to connect up to 10 BACnet MS/TP devices to the VLX. See Figure 5 on page 10 for more information. Do not connect the VLX to the BACnet internetwork using MS/TP unless data traffic requirements are relatively low and Ethernet connection is cost-prohibitive or otherwise difficult to provide. Ethernet is the preferred connection method.

When connecting a VLX using MS/TP, the total number of VLCs on that MS/TP should be limited to 20 or fewer, and the total number of VLX trendlogs should be limited to 15 or fewer, with a minimum sample interval of 30 seconds. Other factors will affect network performance such as global-controller-hosted VLC point alarms, global controller DDC references to devices on the MS/TP, and active operator workstations requesting data from devices on the MS/TP.

Table 8 Ethernet network settings

Item Value Remarks

B. Ethernet Enabled Y | N Set to Y if Ethernet communications is desired.

C. BACnet Over Ethernet Enabled

Y | N Determines whether BACnet packets are transmitted on the Ethernet network. Typically set to Y. Set to N only if IP is enabled (see Table 11 on page 44) and the network allows only IP packets. N is an advanced setting that requires IP network knowledge and may cause communication failures if used incorrectly. See the BACtalk System Design Guide (LTBT-TM-SYSDSGN).

D. Network Number 1–65,534 Sets the BACnet network number for the Ethernet LAN. Each interconnected BACnet network must have a network number unique throughout the internetwork. Selecting a number in the range 1–65,534 (and not 0) is highly recommended for flexibility and future compliance.



Setting EXP communications speed The EXP communications bus is fixed at 76.8 Kbps. Item H on the Change Configuration menu is for reference only.

Setting PTP options Items for PTP connection are on a sub-menu accessed through item O on the Change Configuration menu.

The VLX supports direct-connect using the EIA-232 port (male DB-9) on the lower left of the VLX. The EIA-232 port supports direct connection of a BACtalk operator workstation or external modem.

Table 9 MS/TP network settings

Item Value Remarks

E. MS/TP Network Number

1–65,534 Sets the BACnet network number for the MS/TP LAN. Each interconnected BACnet network must have a network number unique throughout the internetwork. Selecting a number in the range 1–65,534 (and not 0) is highly recommended for flexibility and future compliance.

F. MAC 0-127 Sets the MAC address of the unit on the MS/TP LAN. Each BACnet device on an MS/TP LAN must have a unique MAC address. VLXs are shipped with a default MS/TP MAC address of 0.

G. Kbps 76.8, 38.4, 19.2, 9.6

Sets the communication speed for the MS/TP LAN.

Table 10 PTP settings

Item Value Remarks

A. PTP Virtual Network Number

1-65,534 The virtual network number the VLX uses for PTP. Must be unique. No other network can have this network number on any network that will interconnect. Choose a unique number even if PTP is not used.

B. Direct RS-232 In Enabled

Y | N Set to Y to enable PTP. Set to N to disable it.

C. Direct RS-232 Kbps 9.6, 38.4, 57.6, 115.2

Sets the transmission speed for EIA-232 communications. Ensure that settings on the other end of the connection match.

D. Direct Bridge ON | OFF Set to OFF.

E. Direct speaker ON | OFF Not used.



BACnet/IP settings BACnet/IP settings are accessed through item P on the Change Configuration menu.

The VLX supports Annex J BACnet/IP, which enables BACnet messages to run over Internet Protocol (IP) Wide Area Networks (WANs). If your BACnet internetwork runs on an enterprise network connected by IP routers, you can set up the VLX to exchange BACnet data over this network. BACnet messages are transmitted and received as IP frames.

BACnet/IP settings rely first on correct Ethernet network settings and connections. See “Ethernet” on page 26 for more information about setting up Ethernet network parameters.

Note For more detailed information about BACnet/IP, including architecture diagrams and different setup scenarios, see the BACtalk System Design Guide (LTBT-TM-SYSDSGN).

CAUTION Setting up a BACnet system on an internetwork requires knowledge of IP networking fundamentals. It also requires close coordination with IT and networking professionals who maintain the network. Seek out contacts in this field as soon as possible in the project to help you determine appropriate BACnet/IP settings.

F. Modem In Enabled Y | N Enables/disables inbound connections over modem. Set to Y to support dial-up connections of a BACtalk operator workstation. Set to N for outbound alarm dial-out only.

G. Modem Speaker Y | N Enables/disables the modem speaker.

H. Modem Kbps 38.4 Set to 38.4.

I. PTP Password 1-8 alpha-numeric characters

A case-sensitive PTP password restricting remote access to the VLX from a BACtalk operator workstation. When you set up an outbound connection at the operator workstation, you need to provide this password. If no password is entered here, access is unrestricted. Leave the password unassigned for most other types of PTP connections.

Table 10 PTP settings (Continued)

Item Value Remarks



Table 11 BACnet/IP settings in the VLX

Field Values Remarks

A. IP Enabled Y | N Y = Enables IP support. N = Disables IP support. If the VLX is on an Ethernet LAN but does not use IP, ensure that IP Enabled = N, or that IP Address = 000.000.000.000. This prevents the VLX from sending any IP messages.

B. IP Frame Type DIX | 802.2 The Ethernet frame type used for incoming and outbound IP transmissions. DIX is more common. The primary difference between frame types is the LLC header. DIX = The VLX generates and routes DIX (Ethernet II) frames. 802.2 = The VLX generates and routes 802.2 (also known as 802.3/802.2-not RAW Ethernet) frames.

C. Reassembly Timeout

1-300 The fragment reassembly time-out, in seconds. Default is 120.

D. Maximum MTU 90-1500 The Maximum Transmission Unit (MTU) in bytes. Default is 1500 (typical for Ethernet networks).

E. Time to Live 001-255 Sets the initial Time to Live (TTL) value for IP packets sent from this device. TTL enumerates the number of hops (the number of forwarding routers) the packet is allowed to pass between source and destination. This prevents looping packets from crashing routers and saturating entire links or networks. Default is 64.

F. Type of Service 0, 1, 2, 4, 8, 15 Sets the 4-bit type of service (TOS) value in the IP packet header. Some applications may use TOS to provide precedence levels and determine optimum routing methods for packets. Default is 0.

G. Virtual Net Number 1-65,534 The BACnet Network Number that is assigned to the “virtual network” created by the IP WAN. All BBMDs participating on the IP WAN (in other words, all BBMDs in the broadcast distribution table) must have this Virtual Net set to the same number. This Network Number must also be unique with respect to internetworked BACnet LANs. It cannot match other BACnet Network Numbers (Ethernet LANs, MS/TP LANs, ARCNET LANs, etc.) Default is 1.

H. IP Address nnn.nnn.nnn.nnn The IP address assigned to this device in dotted-decimal format. nnn is a number from 0-255. Follow IP addressing conventions and rules for your network. Default is 000.000.000.000, which prevents IP operation when IP Enabled = Y.

Value TOS bits Description

0 0000 Default

1 0001 Minimize monetary cost

2 0010 Maximize reliability

4 0100 Maximize throughput

8 1000 Minimize delay

15 1111 Maximize security



I. UDP Port 47808-47823 recommended

The UDP port of this BBMD, which is used to establish connectionless transmission of IP with other BACnet/IP-enabled devices.

This UDP port must be the same as other BACnet/IP-enabled controllers on the same subnet, especially if the controllers exchange messages only using BACnet/IP (BACnet/Eth = NO).

There are notable exceptions to this rule:

• When another BBMD is on the same subnet, the UDP ports of the BBMDs must be different.

• Any device on the same subnet that registers with the BBMD as a foreign device (such as an operator workstation) must have a different local UDP port from the BBMD.

Only those controllers with same UDP port on a subnet will exchange BACnet/IP messages. For best results, always ensure that controllers on an internetwork use the same UDP ports. If only one UDP port is required, using 47808 is highly recommended.

J. Subnet Mask nnn.nnn.nnn.nnn The netmask value for transmission on this network in dotted-decimal format. Follow IP netmasking conventions and rules. Default is 255.255.255.000, which is typical.

K. Gateway 1 Address nnn.nnn.nnn.nnn The IP address, in dotted-decimal format, of the primary IP router the VLX uses to connect to the IP internetwork. nnn is a number from 0-255. Default is 000.000.000.000, indicating no device.

L. Gateway 2 Address nnn.nnn.nnn.nnn Optional. The IP address, in dotted-decimal format, of the secondary IP router the VLX uses to connect to the IP internetwork. nnn is a number from 0-255. Default is 000.000.000.000, indicating no device.

M. Server IP Address nnn.nnn.nnn.nnn Optional. The IP address, in dotted-decimal format, of the device that functions as the broadcast distribution table (BDT) server to this device. This BBMD can retrieve its routing table from the BDT Server if its own BDT is lost for any reason. If left to 000.000.000.000, the BDT must be re-entered manually. For this reason, the IP address of the BDT Server should appear in its own routing table.

N. Server UDP Port 47808-47823 recommended

The UDP port of the broadcast distribution table (BDT) server defined under Server IP Address.

Items O through R: Broadcast Distribution Table (BDT) entries

The broadcast distribution table (BDT) contains three associated entries for each BBMD on the IP Virtual Net being defined. A maximum of 32 devices is supported. Each BBMD should have an entry for itself in its BDT. The three entries must be assigned for each BBMD on the virtual network. For each BBMD, the first entry identifies the IP address, the second the UDP port associated with the BBMD, and the third the netmask used on the BBMD's subnet. Usually, BBMDs have identical BDTs because one is set up as the BDT server (see “Server IP Address” and “Server UDP Port” herein).

BBMD n IP Address nnn.nnn.nnn.nnn Each entry is the IP address of a BBMD on the IP virtual network.

BBMD n UDP Port 47808-47823 recommended

Each entry is the UDP port of the BBMD of interest. This is the same value set up as the “UDP Port” in the BBMD of interest.

BBMD n Subnet Mask nnn.nnn.nnn.nnn Each entry is used as a mask on the network of the BBMD of interest. Typically set to 255.255.255.255 (the default), which indicates that BACnet/IP messages go only to the BBMD of interest and to no other devices on the subnet. Caution! Changing this setting (most commonly to 255.255.255.0) is a common cause of IP routing issues, since most IP routers will not allow messages to be forwarded to multiple devices as a security precaution. In nearly all applications, leave this setting to the default 255.255.255.255.

Table 11 BACnet/IP settings in the VLX (Continued)

Field Values Remarks



Setting the date and timeThe date and time are items Q and R on the Change Configuration menu, respectively.

Setting the correct date and time is critical to proper schedule and system operation.

The VLX can receive BACnet Time Sync commands from other BACnet devices. Problems with the date and time are most often attributed to Time Sync conflicts or errors.

Note Setting up the BACnet system to send the correct date and time to the VLX on a regular basis using Time Syncs is recommended. See BACtalk operator workstation software online help for more information about sending Time Syncs.

The date and time are persistent as long as the coin-cell battery is operational. If the coin-cell battery is losing its charge, the date or time may become inaccurate.

Final set up and check out at the operator workstationAfter the VLX is configured with HyperTerminal and connected to appropriate networks, use a BACtalk operator workstation to:

• Confirm network communications, if applicable, and add a record to Device Manager

• Set up inputs for their type, scaling factors, and filter values

• Download DDC

• Set up automation features

• Confirm EXP communications

If the VLX is on a BACnet internetwork, the operator workstation can connect using the internetwork. In stand-alone applications, use a PTP connection. BACtalk for Windows version 3.11, Envision for BACtalk version 1.0 or later is required.

See BACtalk operator workstation software online help and documentation for more detailed information and step-by-step instructions.

Field Format

Q. Date mm/dd/yyyy

R. Time hh:mm:ss (24-hour)



Scanning for the VLX and setting up a device record in Device ManagerUse Device Manager to confirm that the VLX is online and to add a device record for ongoing management. The device record stores setup information about the VLX. An accurate device record is the key to managing DDC, ROC files, and automation features.

CAUTION A device record must exist in Device Manager for you to view and change values from within BACtalk operator workstation software. You must enter a device record to set up inputs and confirm EXP communications.

Use the Device Scan feature to scan the network for the VLX. This is the easiest way to add a record and also ensures that the VLX is communicating.

Once a device record exists, use Device Manager to send and read data and objects to the VLX.

See BACtalk operator workstation software online help or documentation for more information about working with Device Manager.

Confirming EXP-to-VLX communicationThe reliability Property of any existing EXP AI or BI indicates the status of VLX communication with the EXP. For example, Device 201, AI-1000, reliability, indicates the status of VLX 201 communication to the EXP with address 1. It is recommended that you use the reliability property associated with AI-0. Only a single reliability property needs to be referenced. When an EXP is communicating, the reliability property of its objects return NO_FAULT_DETECTED; otherwise, the property returns UNRELIABLE_OTHER.

About real-time operating code (ROC)The VLX ships with system boot code and a real-time operating code (ROC) file pre-loaded at the factory. Diagnostic LEDs indicate the operational status of these files (see “Using VLX diagnostic LEDs” on page 59).

ROC is the foundation of controller operations and is required for the VLX to host DDC and automation features. An initial ROC is loaded at the factory. Periodic updates to the ROC may be required (for example, when a new version of operator workstation software is available). Download the ROC using the operator workstation. ROC files for a controller must be saved in the <bactalk root>\system directory to be downloaded. ROC files typically have a BIN extension. See BACtalk operator workstation software online help or documentation for information about downloading ROC files and checking ROC file versions.

VLX ROC file: <bactalk root>\system\app11.bin

Figure 19 Relationship of VLX system boot code, ROC, and application files

System Boot Code (Loader)

ROC (Application *.BIN)

DDC Automation

Factory loaded

Operator upgradable

Unique to application,user interactive



When the reliability property is referenced in DDC, NO_FAULT_DETECTED appears as an analog value of 0 and UNRELIABLE_OTHER appears as an analog value of 7.

CAUTION Objects in the VLX that aren’t physically supported return UNRELIABLE_OTHER as well. Make sure to reference the reliability property of an object with a corresponding physical input.

Setting up inputsAs part of VLX setup, set the value of particular AVs so that inputs are interpreted and scaled correctly for the type of equipment connected to them. This involves setting a group of analog values (AVs), which determine the type of input the EXP expects, any scaling to be applied, and any filtering to be applied.

CAUTION Configuration values are battery backed and are retained through power outages. However, if both 24 VAC and coin-cell battery power are lost, these values must be restored. Save point data to the operator workstation to avoid having to reset all configuration values. See BACtalk operator workstation software documentation and online help for more information.

Setting the input type AVs (AV-e3nn) An input type AV is associated with each universal input. Set this AV to a value from 0–6 to indicate the type of equipment connected to the VLX. Configuration AVs are identified as AV-e3nn, where e is the EXP address from 0–7 and nn is the input ID from 00–21.

Simplify setup and checkout with Alerton Standard templatesAlerton Standard device and object templates (*.dvt and *.obt files) help simplify input setup and device checkout at the BACtalk operator workstation. Configuration AVs, status information, and I/O values are presented for each EXP. See “Appendix C: BACtalk operator workstation templates” on page 70 for a reference.



For example AV-321 is the input type AV for AI-21 on EXP 0 (the leading 0 is ignored when displaying the AI instance). AV-3300 is the input type AV for AI-0 on EXP 3.

Setting up input scaling When the input type AV for an input is set to 1 (Scaled), corresponding Zero and Range AVs must be set. These same values are used for a different purpose with pulse inputs (input type AV set to 4). See “Setting up pulse inputs” on page 51 for more information about pulse inputs.

The present-value of the AI associated with the input results from the raw count input value (from 0–4095) affected by Zero and Range AVs.

Table 12 Input type AVs for AI configuration

AV-e3nn Valuea

a. e is the address of the EXP of interest (0–7) and nn is the input identifier IN-nn, which can vary from 00–21 depending on the EXP configuration.

Remarks

0 Raw counts Default value. Indicates the input will be read as raw counts in the range 0–4095. An infinitely great resistance (an open) results in a count of 4095. An infinitely small resistance (a short) results in a count of 0.

Use this input type AV setting for:

• Binary inputs (dry contacts and switches, except for pulse inputs)

• Any application requiring raw counts on an input

1 Scaled The associated AI value will result from the raw input value after zero and range scaling factors are applied (see “Setting up input scaling” on page 49). See “Appendix B: Scaling factors” on page 68 for a reference of scaling factors for common ranges.

Use this input type AV setting for:

• 4–20mA inputs

• Resistive inputs (potentiometers)

• 0–5VDC inputs

• 0–10VDC inputs

2 3K Ohm Thermistor (deg. F) Indicates the input is connected to a 3K ohm thermistor. No subsequent scaling or treatment required. The VLX uses an internal lookup table. AI reports degrees Fahrenheit.

3 10K Ohm Thermistor (deg. F) Indicates the input is connected to a 10K ohm thermistor. No subsequent scaling or treatment required. The VLX uses an internal lookup table. AI reports degrees Fahrenheit.

4 Pulse Applies only to AV-e301, AV-e302, and AV-e303 (EXP inputs IN-1, IN-2, and IN-3). Indicates the input is connected to a pulse meter. AI-e001, AI-e002, or AI-e003 as appropriate then report pulse rate for their respective inputs. AV-e020, AV-e021, and AV-e022 report consumption data. See “Setting up pulse inputs” on page 51 for more information.

5 3K Ohm Thermistor (deg. C) Indicates the input is connected to a 3K ohm thermistor. No subsequent scaling or treatment required. The VLX uses an internal lookup table. AI reports degrees Centigrade.

6 10K Ohm Thermistor (deg. C) Indicates the input is connected to a 10K ohm thermistor. No subsequent scaling or treatment required. The VLX uses an internal lookup table. AI reports degrees Centigrade.



Zero and Range AVs are identified as follows:

AV-e4nn = Zero

AV-e5nn = Range

The AI is derived from the input raw counts and Zero and Range values as follows:

By adjusting Zero and Range AVs, the AI can be scaled to any range desired. Use the following information and “Appendix B: Scaling factors” on page 68 to determine scaling factors for common applications.

Setting up software input filtering The VLX enables you to set up software input filtering. Filtering is useful if the input signal includes extraneous fluctuations, either for electrical or physical reasons. For example, flow pressure signals can sometimes fluctuate due to turbulence in the pipe. Use the filter to damp the response and stabilize the input reading.

A pair of AVs controls input filtering:

• AV-e1nn determines whether the input is to be filtered. When 0, no filtering is applied. When 1, filtering is ON.

• AV-e2nn is the filter factor. This value applies only when filtering is ON. This factor can be set in the range 0–255. A higher factor results in a greater degree of filtering (see the filtering equation).

The software input filter adjusts the AI present-value as follows:

c = Raw counts

y = Filter factor set through AV-e2nn

4–20mA Read internally as 1–5V, so counts range from 800–4000.

Resistive (potentiometer)

As the potentiometer moves from 0–10K ohm, raw counts move from 0–2048 (half the full range). Application conditions and the precision rating of the potentiometer may cause variations. Confirm the raw count reading when the potentiometer is at minimum and at maximum. Then scale the input. Use this equation to calculate the theoretical count that results from a given resistance:

0–5VDC Counts range from 0–4000 (0V–5V).

0–10VDC Counts range from 0–4000 (0V–10V).

AI Present Value ZeroInput Raw Counts

4095------------------------------------------- Range×+=

Counts4095 R×

10 000 R+,----------------------------=



p = The previously calculated AI present-value (post filtered)

Note Because of the nature of the filtering equation, higher filter values (close to 255) result in a slower response to input changes.

Setting up pulse inputs Only IN-1, IN-2, and IN-3 can be set up as pulse inputs by setting the input type AV to 4 (Pulse). When the input type AV is set to 4 (Pulse), corresponding Time Base and Pulse Value AVs must be set:

AV-e4nn = Time Base

AV-e5nn = Pulse Value

After the pulse input is set up, AI-e0nn provides rate and AV-e019+nn provides consumption (for example, AV-e21 provides consumption for IN-2).

The pulse-width range is 10ms to 327 seconds. Pulse width is measured from successive rising edges of consecutive pulses (see Figure 17 on page 34).

Setting backup mode values for AOs and BOsIf an EXP loses communication with its VLX, it enters a backup mode. See “Backup mode sequence of operation” on page 61 for details about backup mode conditions.

CAUTION Backup mode values are battery backed and are retained through power outages. However, if both 24 VAC and coin-cell battery power are lost, these values must be restored to the VLX. Save point data to the BACtalk operator workstation.

Set the present-value of AVs in Table 13 according to the command you want applied for the corresponding AO or BO in backup mode. For BOs, set the AV to 0 if you want the BO to be OFF in backup mode, set the AV to 1 to be ON.

Time Base Set to the number of seconds in the rate units for the substance measured. For example, if the pulse device measures gallons per minute, set Time Base to 60 (60 seconds in a minute). If the device measures gallons per hour, set Time Base to 3600 (3600 seconds in an hour).

Pulse Value Set to the number of units that a single pulse represents. For example, if each pulse from a pulse meter represents 0.1 gallon, set Pulse Value to 0.1.

AI Present Valuec 256 y–( )×

256------------------------------- p y×

256-----------+=



Note Alerton Standard object templates (99992002.obt and 99992005.obt) were created to allow you to view the backup mode configuration for binary and analog outputs.

Table 13 Backup mode AVs for AOs and BOs

Backup mode AV EXP-1048 outputs EXP-10120 outputs

e600 EXP e, BO 0 EXP e, BO 0




e604 EXP e, AO 0 EXP e, BO 4









Installation and Operations Guide | VLX data, DDC, and automation

VLX data, DDC, and automationThis topic provides information about using VLX data for DDC programming and automation. It covers the BACnet objects and properties available in the VLX for programming and their behavior. This information is useful for DDC programmers, integrators, and those who develop displays and automation systems with BACtalk operator workstation software.

The topic assumes a fundamental knowledge of DDC programming and automation in the BACtalk environment. See the BACtalk Programmer’s Guide and Reference (LTBT-TM-PRGRMR) for comprehensive DDC programming information, including a DDC function reference.

See “Appendix E: BACnet object and property reference” on page 72 for a list of objects and properties.

Identifying input and output objectsThe VLX and its EXPs appear to the BACnet system as a single device. All BACnet objects and properties are associated with the device instance of the VLX. VLX automation features and DDC reference VLX operational data as BACnet objects and properties.

An EXP’s address determines the range of objects and properties in the VLX associated with it. For EXP e (where e is the address from 0–7 set with DIP switches on the unit), all objects that pertain to that EXP are in the range e000–e999 in the VLX.

EXP configurations vary, so the VLX reserves a range of AIs, AOs, BIs, and BOs based on the maximum that an EXP configuration will support. Each EXP has 24 of each object type reserved for it. Each object instance corresponds to the terminal identifier (IN-n) on the EXP and the EXP address.

For example, AO-5 on EXP 7 connected to a VLX with device instance 800 is identified as Device 800, AO-7005. The same output on EXP 0 is identified as Device 800, AO-5.

If a corresponding physical input or output doesn’t exist and an object property is referenced, the VLX returns an UNRELIABLE_OTHER for the reliability property and FAULT for the status-flags property.

Notational conventions for VLX dataBecause the VLX and EXPs appear to the BACnet system as a single device, a numbering scheme that incorporates the EXP address and the input ID is necessary. For AIs, BIs, AOs, and BOs — and the configuration and feedback values associated with them — this guide uses the following variables:

e = The single-digit EXP address, which ranges from 0–7. This is set with DIP switches on the EXP.

nn = The two-digit input identifier, which ranges from 0–21 and corresponds to the IN terminal number on the EXP.

Example: If the variable object identifier AI-e0nn is shown, AI-3018 refers to IN-18 on EXP 3.

Any time an object appears without a property specified, the present-value property is assumed.



Inputs (AIs and BIs)For universal inputs, an AI and BI pair is associated with the physical input terminal. A set of configuration values is also reserved for AI setup (see “Setting up inputs” on page 48). The type of object appropriate for the equipment connected to it determines whether an AI or BI should be used.

Inputs use a 12-bit analog-to-digital (A/D) converter and a 5.12 VDC onboard reference voltage. The A/D converts the electrical input signal to counts. Count refers to the number in software that results from the A/D conversion.

As the input electrical signal goes from the low end of its range to the high end, counts go from 0–4095. An infinitely great resistance (an open) results in a count of 4095. An infinitely small resistance (a short) results in a count of 0. A 4-20mA signal will range in actual counts from 800–4000, while a 0-5VDC input will range from 0–4000.

EXPs read inputs and make data available to the VLX on change-of-state. EXPs process inputs every 0.1 second. Change of state is considered to have occurred when the raw count value changes by 2.

Most analog inputs are scaled or otherwise treated in software or DDC to provide a range appropriate and intelligible for the application. See “Appendix B: Scaling factors” on page 68.

For each BI, built-in trigger and restore values associated with the AI determine when the BI transitions ON and OFF:

• BI = ON when raw counts ≤ 448.

• BI = OFF when raw counts ≥ 512.

• BI is unchanged when raw counts are in the range 449–511.

For inputs set up as pulse-type inputs, AI-e0nn provides rate and AV-e019+nn provides consumption (for example, AV-e021 provides consumption for IN-2).

Outputs (AOs and BOs)Output objects are associated with corresponding output terminals on the EXP. AOs are for analog loads. BOs are for binary loads.

IMPORTANT A Hand-Off-Auto (H-O-A) switch, which is combined with a trimpot for AOs, enables physical override of all software output commands. See “Using H-O-A switches and trimpots” on page 60 for more information.

Present values and the priority arrayTo command an AO or BO, write commands to the present-value property of the object. When the present-value is commanded, you designate a priority for writing that is used by the priority-array property.

Understanding the priority array is essential to understanding how automation features, DDC, and manual overrides combine to affect output status. A higher priority for writing takes precedence over lower priorities. The highest priority is 1, the lowest is 16. These are also called indexes of the priority array. For some VLX automation features, the priority for writing is configurable; for others, it is fixed at a given level. See Table 14.



When setting up features to write to the present-value of an AO or BO, consider the priority for writing of the feature you are using. Also consider its interaction with other features and their priorities.

Analyzing the value of priority-array indexes can provide useful information about output status and command sources.

Reading AO and BO present-values in DDCCAUTION If VLX DDC reads the present-value of an AO or BO that VLX DDC writes to, it returns the last value DDC wrote, rather than the true present-value as determined by the priority array. This can cause application issues when the BO present-value is read later in the DDC program and used in the control sequence.

To avoid reading an incorrect present-value, don’t write to an AO or BO present-value when you will read the present-value in DDC. Instead, write to the priority-array property of the AO or BO at Index 9. This practice prevents the VLX from storing the last written present-value in memory and then subsequently referencing it.

BOsThe present-value of a BO is either ON (ACTIVE) or OFF (INACTIVE) as a result of the priority array.

H-O-A switch The H-O-A switch overrides all software commands when set to HAND or OFF.

See “Appendix F: H-O-A and trimpot status values” on page 84 for a reference of AVs associated with H-O-A switch and trimpot status.

Priority-array index 4 reflects H-O-A status:

• INACTIVE = Switch in OFF position

• ACTIVE = Switch in HAND position (ON)

• NULL = Switch is in AUTO position

Table 14 Command priorities for VLX automation features

Feature Priority for writing

Reserved. Do not write to present-value at this index. 1

Reserved. Do not write to present-value at this index. 2

Reserved for H-O-A status. 4

Built-in anti-cycle automation feature. Do not write at this index. (BOs only. See “Anti-cycle properties” on page 56.)

6

Data display item. Index 8 is default. Configurable as command priority when setting up prompted items.

8

VLX DDC 9

Event schedule 13

Holiday schedule 15

Standard schedule 16



IMPORTANT The H-O-A switch overrides all software commands, regardless of the command’s priority for writing. If a command is written at priority-array index 1, 2, or 3, and the H-O-A switch is in Hand or Off mode, the present-value may not accurately reflect the actual status of the output.

Anti-cycle properties Two properties of a BO object — minimum-on-time and minimum-off-time — enable you to set anti-cycle limits for a BO in seconds. This is carried out through priority-array index 6. For example, by writing a value of 60 to the minimum-on-time property of a BO, you set a minimum ON time of 60 seconds. If DDC writes an ACTIVE (ON) command (at priority-array index 9), priority-array index 6 is automatically set ON and remains ON for 60 seconds after the command is issued. Present-value commands written with a priority lower than 6 will be ineffective until the time expires and priority-array index 6 returns to NULL. By default, minimum-on-time and minimum-off-time are set to 0.

WARNING Software anti-cycle measures are not meant to replace hard-wired safety interlocks.

AOsAO present-values provide a control signal from 0–100 that drives the corresponding output from either 0–20mA or 0–10VDC as configured with the output DIP switch on the EXP. If necessary, scale the AO in DDC for the desired output range (for example, scale 20-100 for a 4-20mA range).

H-O-A switch and trimpot When the H-O-A switch is in HAND position, the H-O-A trimpot drives the output from 0–100% (0–20mA or 0–10VDC as appropriate). When the switch is in OFF position, the output is at 0%. The trimpot value covers the full range of the output, regardless of any software scaling.

See “Appendix F: H-O-A and trimpot status values” on page 84 for a reference of AVs associated with H-O-A switch and trimpot status.

Priority-array index 4 reflects H-O-A status:

• 0 = Switch in OFF position

• 0-100 = Switch in HAND position and potentiometer at 0 (min.) to 100 (max.) of tuning range

• NULL = Switch in AUTO position

IMPORTANT The H-O-A switch overrides all software commands, regardless of the command’s priority for writing. If a command is written at priority-array index 1, 2, or 3, and the H-O-A switch is in Hand or Off mode, the present-value may not accurately reflect the actual status of the output.

AVs and BVsAVs and BVs in the 0–7999 range are reserved for special uses as explained throughout this guide (for example, input configuration and H-O-A status). AVs and BVs available for general use in programming and automation are in the range 8000-8499.



General purpose AVs and BVs in the VLX have a priority-array property that governs their present-value. Configuration AVs and BVs do not. See Table 14 on page 55 to identify the priority for writing to the present-value that specific automation features use.

DDC execution and statusDDC execution time depends on the size and complexity of DDC. Typically, DDC execution time does not exceed 500 mS. If DDC execution time and size are a concern, use the Alerton Diagnostics (513) property of the Program 1024 object in the VLX to monitor DDC execution time and the amount of memory occupied by DDC.

This is a proprietary Alerton property. Place a read-only item referencing this property on a data display or device template.

The property shows the execution rate of DDC in milliseconds and the number of memory bytes DDC occupies. If DDC halts, this property returns a text string indicating the condition that caused the halt.

Other properties of the Program 1024 object may be useful as well. See “Properties of VLX Program objects” on page 82.

Figure 20 Placing the Alerton Diagnostics (513) property of the Program 1024 object on a device template for a VLX with device instance 211

Figure 21 The Alerton Diagnostic (513) property shows DDC execution time and bytes occupied by DDC



Special points in DDC programmingPoints listed in this section may be used in VLX DDC. If an “N/A” appears for a point type, the point is available in global controller/building controller DDC or in VisualLogic, but has no use in a VLX application.

Branch points Used for temporary storage of values in a DDC routine. Not available for display or as BACnet objects and properties. Total of 128 (BR-0 through BR-127) available when using global/building controller DDC. Total of 1024 (BR-0 through BR-1023) available when using VisualLogic.

Initialize Flag that is ON only during the first pass of DDC. Use Data Type 8 - Other.

Current time Provides a count of minutes since midnight. 0 = midnight. 1339 = 11:59 p.m. Use Data Type 8 - Other.

MAC address This will be the decimal value of the MS/TP MAC address.

MS/TP dev cnt Provides a count of the devices currently communicating on the VLX’s MS/TP LAN.

Free core mem. Amount of core memory available in bytes.

Free obj. mem. Amount of object memory available in bytes.

Free paged heap Amount of free paged heap memory available in bytes.


Installation and Operations Guide | VLX/EXP operation and maintenance

VLX/EXP operation and maintenanceThis topic provides information for using diagnostic LEDs on the VLX, using H-O-A switches, and resetting the VLX. The topic also provides brief information for using BACtalk operator workstation software to save and send data to the controller.

Using VLX diagnostic LEDsThe VLX has four diagnostic LEDs that indicate operational status. During test modes and when performing special operations, such as clearing memory, these LEDs provide status feedback. See “Performing a comprehensive field test” on page 64 for information on testing feedback.

EXP Status LEDEach EXP has an LED located in the upper left-hand corner, labeled STATUS, which indicates the status of communications to the VLX.

Table 15 VLX diagnostic LEDs

LED Description

CPU FLASHING = The CPU is operational. Note that under heavy CPU activity, this LED may flash rapidly enough to appear steady ON.

OFF = CPU fault. Contact your Alerton dealer.

SYS ON = Normal. System boot code is loaded and operational.

OFF = System boot code fault. Contact your Alerton dealer.

ROC ON = ROC is loaded and operational.

OFF = ROC not loaded. Connect operator workstation and download ROC.

DDC FLASHING = DDC loaded and executing. LED status toggles with each DDC cycle.

OFF = No DDC loaded. Connect operator workstation and download DDC file.

Table 16 EXP Status LED indication of operational mode

LED flash mode Meaning

Rapid flash

(ON 0.5 seconds, OFF 0.5 seconds)

Normal, valid VLX communications. Immediately upon receiving a message addressed to it from the VLX, the EXP enters this mode (unless backup mode has been in effect for less than five minutes).

Medium flash


Indicates that the EXP is receiving messages from the VLX, but is receiving none addressed to it. This is an indication of software issues. The EXP will enter medium flash mode briefly before slow flash mode.

Slow flash

(ON 2.5 seconds, OFF 2.5 seconds).

Indicates that the EXP is not receiving any messages. Typically an inidication of physical connection issues.

Pulse flash


EXP is in backup mode. Outputs are set to backup mode values. To prevent short-cycling, this mode persists for a minimum of 5 minutes, regardless of communications status. See “Backup mode sequence of operation” on page 61.



Using H-O-A switches and trimpotsFor each AO and BO terminal on an EXP, a Hand-Off-Auto (H-O-A) switch enables manual override of the commanded output status. For AOs, the H-O-A switch is combined with a trimpot, which drives the output when the corresponding H-O-A switch is in the H position.

H-O-A switches always override all software commands and backup mode values.

H-O-A switch status and trimpot values are reported through reserved AVs in the VLX for use in software. See “Appendix F: H-O-A and trimpot status values” on page 84.

Figure 22 Status LED flash patterns in the event of EXP communication disruption

Table 17 H-O-A switch operation

Switch position BO operation AO operation

A (default) Software controlled Software controlled

O OFF Off (0%). One-second delay between switch set and output response to accommodate transitions from H to A through this position.

H ON Trimpot control. Lift the cover and use a small screwdriver to adjust the trimpot corresponding to the output. Fully counter-clockwise = 0% (0 mA or 0 VDC), Fully clockwise = 100% (20mA or 10 VDC).

Time1 min. 2 min. 5 min.

Outputs in last-commanded state

Outputs tobackup values

for 5-minute minimum

Medium flash

(no co

mm for 5

0 sec)

Rapid flash

(comm O

K)

Slow flash

(no co

mm for 6

0 sec.)

Pulse fla

sh (b

ackup m

ode)



Backup mode sequence of operationIn backup mode, all EXP outputs are set to backup mode values. These values are programmed using AVs (see “Setting backup mode values for AOs and BOs” on page 51) and are stored in nonvolatile EXP memory. While in backup mode, the Status LED on the EXP enters pulse flash mode: 0.5 seconds ON, 2.5 seconds OFF (see “EXP Status LED” on page 59).

Once an EXP enters backup mode, it remains in backup mode for a minimum of five minutes. After the five-minute period, on first receipt of a message from the VLX, the EXP resumes normal operation. You can manually return an EXP to normal operation by cycling EXP power while VLX communication is present.

The EXP enters backup mode under the following conditions.

Saving and restoring configuration and setup dataAny time you change configuration settings, automation features, or DDC, save this data to the BACtalk operator workstation. Although configuration AVs are stored in battery-backed non-volatile memory, and DDC and automation features are stored in flash memory, having saved this data to the operator workstation enables you to quickly restore settings after a catastrophic failure that requires you to completely reprogram the controller.

See online help at the operator workstation for more information about sending and saving controller data.

Lost communications The EXP loses VLX communication for more than five minutes. Unless overridden by H-O-A switch, outputs remain in their last commanded state for the five-minute period until backup mode activates. Then outputs are set to backup mode AVs. When communication is re-established, outputs are immediately commanded to AO present-value.

Power reset and no communications

The EXP detects no VLX communications for one minute immediately after a power reset. Unless overridden by H-O-A switch, outputs remain 0/OFF for the one-minute period until backup mode activates. If the power off period is a short enough duration (appx. 5-10 seconds) for the EXP to retain last commanded values, not all power is dissipated, and outputs will remain at last commanded values for the one-minute period until backup mode activates. Then outputs are commanded to backup mode AVs. When communication is re-established, outputs are immediately commanded to AO present-value.



VLX coin-cell battery replacementThe onboard lithium coin-cell battery provides power for the real-time clock and for battery-backed SRAM when 24 VAC power is unavailable.

For best results, replace the coin-cell battery every three years. Standby battery life is approximately 10 years, with 1.5 years of cumulative backup capability. Battery life varies depending on application.

CAUTION Always back up VLX data to the BACtalk operator workstation before replacing the coin-cell battery. It is recommended that you replace the battery while 24 VAC power is applied to the unit. Otherwise, the VLX loses configuration data, and you must restore data manually from an operator workstation.

� To replace the VLX coin-cell battery

1. Raise the left flap of the VLX and note the battery location (see Figure 1 on page 7).

2. Without removing power, carefully raise the battery clip about 1/8" with a small screwdriver.

3. Dispose of the old battery in an approved method.

4. Paying attention to polarity, insert the replacement battery into the battery clip.

5. Close the flap.

Resetting the VLX and clearing dataResetting the VLX, clearing data, and clearing the ROC file may be necessary when troubleshooting the VLX. These steps are usually performed in ascending order. If the first doesn’t fix the problem, try the next.

1. Reset the VLX.

2. Clear DDC and objects, and then reload them.

3. Clear ROC and reload ROC and DDC.

IMPORTANT Procedures in this topic require operational system boot code. These procedures are not effective if the SYS LED indicates a problem. In this case, contact your Alerton dealer.

Resetting the VLXThe VLX has a Reset button, which resets CPU power without physically removing and replacing power connections. When instructions or procedures call for you to reset the VLX, use the Reset button.

Alerton part number BT-3.0V-COIN2

Type 3.0V lithium coin cell. Duracell DL2450 or equivalent.



� To reset VLX power

• Press and hold the Reset button for three seconds, and then release it.

Clearing DDC and objectsIn rare circumstances, DDC and automation setups may become corrupt and you may be unable to use normal methods from an operator workstation to delete the objects. This may cause missing DDC and objects or the appearance of erratic, inexplicable data.

� To clear VLX DDC and automation setups

1. Set Switch 4 on DIP Switch Bank SW1 to ON. This DIP switch bank is located under the VLX’s left flap.

2. Reset the VLX.

All four diagnostic LEDs show steady ON.

3. Within two seconds, while all four diagnostic LEDs show steady ON, reset the VLX again.

The CPU LED shows steady ON, then flashes, and the SYS and ROC LEDs show steady ON.

4. Return Switch 4 to the OFF position.

Clearing the ROC fileIn addition to clearing DDC, objects and automation setups, this procedure also clears the real-time operating code (ROC) file from the VLX. After clearing the ROC, connect an operator workstation to load a new ROC file.

In rare circumstances, the ROC may become corrupt and you may be unable to delete or overwrite the ROC by downloading a ROC file from an operator workstation. Indications of ROC issues include:

• You are unable to delete or clear objects through normal methods or by clearing DDC, objects, and automation setups.

• BACnet devices (such as the BACtalk operator workstation) are not able to recognize the presence of the VLX on the network when all other network parameters are set correctly and the physical connection is sound.

� To clear ROC along with all DDC, objects and automation setups

1. Set Switch 3 on DIP Switch Bank SW1 to ON. This DIP Switch bank is located under the VLX’s left flap.

Reset the VLX.

2. All four diagnostic LEDs show steady ON.

3. Within two seconds, while all four diagnostic LEDs show steady ON, reset the VLX again.

4. Return Switch 3 to the OFF position.



Performing a comprehensive field testThe VLX offers a comprehensive field test that you can use to identify internal VLX failures during troubleshooting. The VLX runs 10 separate tests during the comprehensive field test to check SRAM, EEPROM, the onboard clock, and communications circuitry.

The VLX provides test results through a HyperTerminal connection over an AC-2650 cable. It also provides results through diagnostic LEDs. Pass/fail status for each of 10 tests is provided. With a HyperTerminal connection, the VLX offers clear text that indicates test status and results. A unique pattern for the diagnostic LEDs corresponds to each of the 10 tests.

� To run the comprehensive field test and interpret results

1. Ensure that the BACtalk operator workstation has valid point data, DDC, and automation features saved.

2. Disconnect the VLX from the EXP communications bus.

3. Connect a computer using an AC-2650 cable and start a HyperTerminal session (see “Connecting to the VLX with HyperTerminal” on page 35) if you want test results in readable text. Use LEDs as shown in Table 18 if you are unable to connect with HyperTerminal.

4. Set Switch 1 on DIP Switch Bank SW1 to ON.

5. Reset the VLX (see page 63).

The test sequence begins.

6. Interpret test results. See Table 18 on page 65 for more information.

7. When all tests complete successfully, all LEDs will turn ON for 0.5 seconds then OFF for 0.5 seconds.

8. If the tests passed, return Switch 1 to the OFF position and reset the VLX. If any test failed, factory servicing is required.

IMPORTANT Failures detected by the comprehensive field test cannot be corrected in the field. Any test failure requires that you return the unit for factory service.

HyperTerminal Any failed test will indicate “fail” on the HyperTerminal screen.

LEDs--Test Failed LED pattern remains. Some tests may take several minutes. Wait a sufficient amount of time (2 or 3 minutes) before assuming a test has failed.



Table 18 Test descriptions and corresponding diagnostic LED patterns

LED pattern

Test Description CPU SYS ROC DDC

1 SRAM data bus test Isolates shorted or open lines on the VLX SRAM data bus. The test writes a series of data values, each with a single bit set, to different SRAM locations.

ON OFF OFF OFF

2 SRAM address bus test Isolates shorted or open address lines on the VLX SRAM address bus.

OFF ON OFF OFF

3 SRAM data cell test Verifies that each SRAM cell is functional. Each cell is written to and then values are verified with two test patterns.

ON ON OFF OFF

4 EEPROM SPI interface test Verifies that VLX EEPROM is present and responds correctly to VLX requests to read and write data.

OFF OFF ON OFF

5 EEPROM data retention test Verifies integrity of EEPROM data cells. Reads current EEPROM data, writes data to each cell, reads data back, and then restores original data.

ON OFF ON OFF

6 Real-time clock test Verifies that the real-time clock component is present, responds correctly to VLX commands, and keeps accurate time.

OFF ON ON OFF

7 DUART interface test Verifies that the serial DUART used for MSTP and EXP communications is present and responds correctly to VLX commands. The test verifies that the DUART registers hold written values.

ON ON ON OFF

8 MSTP comm. channel test Verifies that the onboard MSTP channel is operational.

OFF OFF OFF ON

9 EXP comm. channel test Verifies that the onboard EXP communications channel is operational

ON OFF OFF ON

10 PTP comm. channel test Verifies that the serial communications controller is operational.

OFF ON OFF ON

All tests complete—OK Flash ON then OFF.



Appendix A: Technical dataTable 19 VLX technical data

Power A 24 VAC, 50-60 Hz, minimum 10 VA transformer powers the VLX. EXP outputs are powered separately.

Fuse Alerton Part Number: BT-1.0A-5X20

Type: Onboard 1 Amp GDB fast-acting fuse (5mm X 20mm)

Battery Replaceable 3.0V lithium battery provides up to 1.5 years (cumulative) real-time clock and RAM backup. Standby battery life is 10 years. Recommended replacement every 3 years.

Alerton Part Number: BT-3.0V-COIN2

Type: Duracell DL2450 or equivalent.

Memory and CPU 2K EEPROM provides non-volatile, power-independent configuration data storage. 2 MB static RAM provides reliable storage for critical data. 16 MB dynamic RAM for program execution. 2 MB flash RAM for nonvolatile program storages. 32-bit, high-integration Motorola CPU.

Real-time clock Onboard, battery-backed, real-time clock supports schedule operations, trendlogs, and timed DDC functions.

EXP communication Supports up to 8 EXPs on a simple communications bus. Use18 AWG shielded, twisted-pair cable. Cable lengths between components must not exceed 18" (45.72 cm).

BACnet networks BACnet Ethernet or MS/TP. Ethernet recommended. Integrated Ethernet adapter circuitry with RJ-45 jack for connection to 10Base-T (10 Mbps) or 100Base-TX (100 Mbps) networks. Removable, header-style screw terminals for BACnet MS/TP (shielded twisted-pair bus), configurable to 76.8 Kbps.

BACnet/IP Annex J BACnet/IP support for interoperability on wide area networks (WANs) and campus area networks (CANs). Functions as a BACnet BBMD and supports Foreign Device Registration.

Max. Dimensions 7.148" (181.56mm) H X 7.283" (184.98mm) W X 1.50" (38.10mm) D.

Environmental 32–131°F (0–55°C). 0–95% RH, non-condensing.

BACnet conformance

BACnet Advanced Application Controller (B-AAC). See Protocol Implementation Conformance Statement (PICS).

Ratings Listed Underwriters Laboratory for Open Energy Management Equipment (PAZX) under the UL Standard for Safety 916.

EMC Directive 89/336/EEC (European CE Mark).

FCC Part 15, Subpart J, Class A.

Software BACtalk operator workstation software over BACnet networks (Ethernet or MS/TP).

BACtalk for Windows version 3.11, Envision for BACtalk version 1.0 or later is required.

DDC executes locally every half second, with capacity for up to 1000 DDC functions.

Local capacity for 50 BACnet schedules.

Up to 200 alarm setups stored locally as individually configurable BACnet event enrollment objects.

Up to 200 trendlogs store data point histories for analysis.


Installation and Operations Guide | Appendix A: Technical data

Table 20 EXP (generic) technical data

Power A 24 VAC, 50-60 Hz, minimum 10 VA transformer is necessary to power a single EXP board. Transformer sharing is allowed for powering multiple EXPs. Binary outputs powered separately. See “Single-point grounding” on page 19.

Fuse Alerton Part Number: BT-2.0A-5X20

Type: Onboard 2 Amp GDB fast-acting fuse (5mm X 20mm)

Inputs Jumper-selectable, 12-bit universal inputs accept following input signals:

• Thermistor (3K or 10K ohm) or other resistive inputs (software scalable)

• Dry contact

• 4–20 mA (no external resistor required)

• 0–5VDC

• 0–10 VDC

Up to 100Hz pulse inputs are supported ONLY on inputs 1, 2, and 3.

Binary outputs Binary outputs rated 24 VAC @ 0.5 A. Each binary output has a Hand-Off-Auto (H-O-A) switch for manual override of programmed command. Use one or more isolated transformers to power BOs separately from the EXP board supply power.

Analog outputs Analog outputs are driven by a precision D/A converter and are DIP-switch configurable to provide either 0–10 VDC or 0–20 mA. Each analog output has a Hand-Off-Auto switch for manual override of programmed command. Analog outputs also include a potentiometer for manually adjusting the output in Hand mode.

Max. dimensions 7.148" (181.56mm) H X 7.283" (181.98mm) W X 1.500"(38.10mm) D.

Terminations Removable, header-style screw terminals.

Environmental 32–131°F (0–55°C). 0–95% RH, non-condensing.

Communications Up to eight EXPs can connect to a VLX over a simple communications bus. Use18 AWG shielded, twisted-pair cable. Cable lengths between components must not exceed 18" (45.72cm).

Ratings • Listed Underwriters Laboratory for Open Energy Management Equipment (PAZX) under the UL Standard for Safety 916. Listing includes both U.S. and Canadian certification.

• EMC Directive 89/336/EEC (European CE Mark).

• FCC Part 15, Subpart J, Class A.



Appendix B: Scaling factors

0–5 and 0–10 VDC inputsTable 21 Scaling factors for usable ranges common in 0–5 VDC and 0–10 VDC input applications

Input rangeZero Value (AV-e4nn) Range Value (AV-e5nn)

0 V = 5 V or 10 V=

-40 160 -40.00000 204.75000

-1 1 -1.00000 2.04750

-0.5 0.5 -0.50000 1.02375

-0.25 0.25 -0.25000 0.51188

-0.1 0.1 -0.10000 0.20475

0 1 0.00000 1.02375

0 3 0.00000 3.07125

0 5 0.00000 5.11875

0 10 0.00000 10.23750

0 30 0.00000 30.71250

0 33 0.00000 33.78375

0 50 0.00000 51.18750

0 100 0.00000 102.37500

0 200 0.00000 204.75000

0 500 0.00000 511.87500

0 1000 0.00000 1023.75000

0 2000 0.00000 2047.50000

40 240 40.00000 204.75000

50 85 50.00000 35.83125

50 100 50.00000 51.18750


Installation and Operations Guide | Appendix B: Scaling factors

4–20mA inputsTable 22 Scaling factors values for usable ranges common in 4–20mA input applications

Input range Zero Value (AV-e4nn)

Range Value (AV-e5nn)4mA = 20mA =

-40 160 -90.00000 256.00000

-1 1 -1.50000 2.56000

-0.5 0.5 -0.75000 1.28000

-0.25 0.25 -0.37500 0.64000

-0.1 0.1 -0.15000 0.25600

0 1 -0.25000 1.28000

0 3 -0.75000 3.84000

0 5 -1.25000 6.40000

0 10 -2.50000 12.80000

0 30 0.00000 30.72000

0 33 0.00000 33.79200

0 50 -12.50000 64.00000

0 100 -25.00000 128.00000

0 200 -50.00000 256.00000

0 500 -125.00000 640.00000

0 1000 -250.00000 1280.00000

0 2000 -500.00000 2560.00000

40 240 -10.00000 256.00000

50 85 41.25000 44.80000

50 100 37.50000 64.00000



Appendix C: BACtalk operator workstation templatesTable 23 VLX device and object templates for BACtalk operator workstation

File namea

a. Device templates have a *.dvt extension. Object templates have an *.obt extension. File names correspond to the display ID in operator workstation software, which programmers use to reference the template. Files are saved in <bactalk root>\Alerton\Standard\Displays. To be modified, copy to <bactalk root>\<rep>\<job>\Displays.

Remarks

999992000.dvt VLX device properties. This template provides push button links to all other templates described herein.

99992040.dvt EXP-0 input configuration








99992050.dvt EXP-0 Outputs








99992020.dvt AV 8000-8049

99992021.dvt AV 8050-8099

99992022.dvt AV 8100-8149

99992023.dvt AV 8150-8199

99992024.dvt AV 8200-8249

99992025.dvt AV 8250-8299

99992026.dvt AV 8300-8349

99992027.dvt AV 8350-8399

99992028.dvt AV 8400-8449

99992029.dvt AV 8450-8499

99992030.dvt BV 8000-8049

99992031.dvt BV 8050-8099

99992032.dvt BV 8100-8149

99992033.dvt BV 8150-8199

99992034.dvt BV 8200-8249

99992035.dvt BV 8250-8299

99992036.dvt BV 8300-8349

99992037.dvt BV 8350-8399

99992038.dvt BV 8400-8449

99992039.dvt BV 8450-8499

99992001.obt VLX-Analog input properties

99992002.obt VLX-Analog output properties

99992003.obt VLX-Analog value properties

99992004.obt VLX-Binary input properties

99992005.obt VLX-Binary output properties

99992006.obt VLX-Binary value properties


Installation and Operations Guide | Appendix D: HyperTerminal settings

Appendix D: HyperTerminal settings

For HyperTerminal, default settings on the Settings tab should be appropriate. If you have changed any settings, use the defaults shown.

Table 24 Basic HyperTerminal settings for proper connection to the VLX

Property Setting

Bits per second 57,600

Data bits 8

Parity None

Stop bits 1

Flow control None

Figure 23 Selections on the Settings tab of HyperTerminal for connection to the VLX

Figure 24 ASCII Setup selections in HyperTerminal for connection to the VLX



Appendix E: BACnet object and property referenceUse Table 25 for a general overview of the BACnet objects available in the VLX. Use the tables that follow for details about the properties of each object listed. For properties, a check in the W column indicates a property is writable. Items in boldface will always appear as shown.

Table 25 VLX objects

Object (instance range)

Remarks

AI (0-7999) Analog input objects associated with physical, universal input terminals on EXPs. AIs are identified as AI-e0nn, where e is the EXP address (0-7) and nn is the input terminal number.

AO (0-7999) Analog output objects associated with physical output terminals on EXPs. AOs are identified as AO-e0nn, where e is the EXP address (0-7) and nn is the output terminal number.

AV (0–7999) RESERVED AVs for EXP configuration, status, and backup values. Do not use these AVs for general programming or automation. These AVs do not support the priority-array property.

AV (8000–8499) General use AVs. These AVs support the priority-array property.

BI (0-7999) Binary input objects associated with physical, universal input terminals on EXPs. BIs are identified as BI-e0nn, where e is the EXP address (0-7) and nn is the input terminal number.

BO (0-7999) Binary output objects associated with physical output terminals on EXPs. BOs are identified as BO-e0nn, where e is the EXP address (0-7) and nn is the output terminal number.

BV (8000-8499) General use BVs. These BVs support the priority-array property.

Calendar Describes a list of calendar dates, special event dates, holiday dates, and date ranges.

Device Provides general information about a device

Event Enrollment Defines an event and connects the occurrence of the event to the transmission of an event notification. Used in BACtalk primarily for alarms.

File (0) Provides information about the ROC file.

File (1024) Provides information about the current DDC file.

File (2048) Provides information about the DDC trap file.

Notification Class Stores a list of available recipients for the distribution of event notifications (alarms, trendlog gathering, etc.).

Program 0 Stores information about the ROC/Controller program.

Program 1024 Stores program status information about the current DDC program.

Schedule Controls designated properties by periodic schedule that may recur during a range of dates.


Installation and Operations Guide | Appendix E: BACnet object and property reference

Properties of VLX AI objects

Properties of VLX AO objects

Table 26 Properties of the VLX AI object

Property W Type Example Remarks

cov-increment � Real If the present-value changes by this amount or greater, a change-of-value notification is sent to subscribed devices. Not used at present.

description � Character string Return Air Temp

An editable description of the object’s location or function.

event-state Enumerated NORMAL

object-identifier BACnet_ Object_ Identifier

AI 5 This property consists of the object-type property and the object instance, which is a numeric code that identifies the object of interest.

object-name Character string EXP 7 AI 05

object-type Enumerated AI Indicates an analog input (AI) object.

out-of-service � Boolean FALSE TRUE decouples the present-value property from the physical input, and the present-value does not track further physical input changes. While TRUE, the present-value can be changed to any value to simulate conditions for testing. FALSE indicates that the present-value is tracking changes to the physical input.

present-value � Real 72.3 Writable only when out-of-service = TRUE (see herein). Range of present-value depends on input setup. See “Setting up inputs” on page 48.

reliability BACnet_ Reliability NO FAULT DETECTED

Other possibility is UNRELIABLE_OTHER.

status-flags Bit string In alarm = 0, fault = 0, overridden = 0, out of service = 0

A four-position bit string that indicates the status of the object. If a status bit =1, that status is TRUE.

units � Enumerated Deg F Indicates the unit of measure for the AI, in BACnet engineering units.

Table 27 Properties of VLX AO objects


description � Character string Economizer Damper




AO 5 This property consists of the object-type property and the object instance, which is a numeric code that identifies the object of interest.

object-name Character string EXP 0 AO 00

object-type Enumerated AO

out-of-service � Boolean FALSE TRUE decouples the present-value property from the physical output. While TRUE, the present-value can be changed to any value to simulate conditions for testing without affecting the actual physical output.



Properties of VLX AV objects

present-value � REAL 75 Valid values are real numbers in the range 0–100. Values greater than 100 are interpreted as 100. When commanded, values are written to the present-value with a priority for writing, which corresponds to a priority-array index (see “priority-array” herein).

priority-array BACnet PriorityArray

<Array of BACnet PriorityValue>

An array of prioritized values (indexes 1-16) controlling the present-value, index 1 having the highest priority. The value with the highest priority for writing controls the present-value. Possible values for priority-array indexes are real values or NULL. A NULL value indicates no command is issued at that priority level.


Other possibilities are OVER RANGE, UNDER RANGE, UNRELIABLE_OTHER.

relinquish-default � REAL 0 Default value to be used for present-value property when all priority-array indexes are NULL.



units � Enumerated % Indicates the AO’s unit of measure in BACnet engineering units.

Table 28 Properties of VLX AV objects


cov-increment � Real If the present-value changes by this amount or greater, a change-of-value notification is sent to subscribed devices. Not used at present.

description � Character string Occupied Setpoint

A description assigned to describe the object’s function.

event-state Enumerated Normal


AV 1 This property consists of the object-type property and the object instance, which is a numeric code that identifies the object of interest.

object-name Character string For reserved AVs, shows the EXP and AV of interest. For example, EXP 0 AV 01. Otherwise shows AV <instance>.

object-type Enumerated AV

out-of-service Boolean FALSE

present-value � Real 76.4 Range is +/−3 x 1038 (six significant digits of resolution)

Table 27 Properties of VLX AO objects (Continued)




status-flags Bit string <Bit string> A four-position bit string that indicates the status of the AV. If a status bit =1, that status is TRUE.

units � Enumerated Deg F Indicates the unit of measure, in BACnet engineering units, for the AV present-value.



NOT AVAILABLE IN AVs (0-7999). GENERAL PURPOSE AVs ONLY. An array of prioritized values (indexes 1-16) controlling the present-value, index 1 having the highest priority. The value with the highest priority controls the present-value. Possible values for priority-array indexes are real values or NULL. A NULL value indicates no command is issued at that priority index.

relinquish-default � REAL 0 NOT AVAILABLE IN AVs (0-7999). GENERAL PURPOSE AVs ONLY. Default value to be used for present-value property when all priority-array indexes are NULL.

Table 28 Properties of VLX AV objects (Continued)




Properties of VLX BI objectsTable 29 Properties of the VLC BI object


description � Character string Fan Status An editable description of the object’s location or function.



BI 10 This property consists of the Object_Type property and the Object Instance, which is a numeric code that identifies the object of interest.

object-name Character string EXP 7 BI 10

object-type Enumerated BI Indicates a binary input (BI) object.

out-of-service � Boolean FALSE TRUE decouples the present-value property from the physical input, and the present-value does not track further physical input changes. While TRUE, the present-value can be changed to any value to simulate conditions for testing. FALSE indicates that the present-value is tracking changes to the physical input.

polarity NORMAL

present-value � Logical state ACTIVE ACTIVE or INACTIVE. Writable only when out-of-service = TRUE (see herein).

reliability NO FAULT DETECTED






Properties of VLX BO objectsTable 30 Properties of the VLC BO object


description � Character string Fan Start/Stop


event-state Enumerated Normal If the object does not support intrinsic reporting, the value will be NORMAL.


BO 1 This property consists of the object-type property and the object instance, which is a numeric code that identifies the object of interest.

object-name Character string EXP 7 BO 01

object-type Enumerated BO

out-of-service � Boolean FALSE TRUE decouples the present-value property from the physical output. While TRUE, the present-value can be changed to any value to simulate conditions for testing without affecting the actual physical output.

present-value � Enumerated INACTIVE Either ACTIVE or INACTIVE. Note that a NULL value can be written to the present-value on data displays, but the value is actually written to a priority-array property. The present-value is the result of the priority array.

minimum-on-time � Real 60 Enables you to set anti-cycle limits for a BO in seconds. This is carried out through priority-array index 6. For example, by writing a value of 60 to the minimum-on-time property of a BO, you set a minimum ON time of 60 seconds.

minimum-off-time � Real 60 Enables you to set anti-cycle limits for a BO in seconds. This is carried out through priority-array index 6. For example, by writing a value of 60 to the minimum-off-time property of a BO, you set a minimum OFF time of 60 seconds.



A read-only array of prioritized values (1-16) controlling the present-value, priority 1 having the highest priority. The value with the highest priority controls the present-value. Possible values for priority-array indexes are ACTIVE, INACTIVE, or NULL. A NULL value indicates no command is issued at that priority level.



relinquish-default � Enumerated INACTIVE Default value used for present-value property when all priority array values are NULL.





Properties of VLX BV objects

Properties of the VLX Device object

Table 31 Properties of VLX BV objects


active-text ON


A description assigned for the object’s function.


inactive-text OFF


BV 8413 This property consists of the object-type property and the object instance, which is a numeric code that identifies the object of interest.

object-name Character string BV 8413

object-type Enumerated BV Indicates a binary value (BV).


present-value � Enumerated INACTIVE Either ACTIVE (ON) or INACTIVE (OFF).





An array of prioritized values (indexes 1-16) controlling the present-value, index 1 having the highest priority. The value with the highest priority controls the present-value. Possible values for priority-array indexes are ACTIVE, INACTIVE, or NULL. A NULL value indicates no command is issued at that priority-array index.

relinquish-default � REAL 0 Default value to be used for present-value property when all priority-array indexes are NULL.

Table 32 Properties of the VLX Device object


apdu-segment- timeout � Unsigned 6000 The time after transmission of a “segment” until the lack of a reply means it was assumed to be lost (in milliseconds, 1000 = 1 sec.). Default = 6000.

apdu-timeout � Unsigned 6000 The time after transmission of an APDU until the lack of a reply means it was assumed to be lost. The APDU timeout value for this device in milliseconds (1000 = 1 sec.). Default = 6000.

application-software-version

Character string VLX V1.0 Indicates the ROC file version.

daylight-savings- status

� Boolean FALSE Indicates whether daylight savings is in effect (TRUE) or not (FALSE). Not used at present.

description � Character string Second floor controller

Assigned by the user to describe the device’s function.

device-address- binding

List Empty.



firmware-revision Character string BACtalk VLX v1.1 02/02/2002

Indicates the VLX boot code version.

local-date � Date Sunday, 02/24/2002

Indicates date: day of the week, month/day/year. Writable via Time Sync.

local-time � Time 10:15:56.00am

Indicates the time stored in the device. Writable via Time Sync.

location � Character string East Wing Indicates the physical location of the device.

max-apdu-length-accepted

Unsigned 1476 The maximum message packet size that the device can handle.

max-info-frames � Unsigned 60 Number of MS/TP messages the device will send per token hold. Default = 60. Max. = 200.

max-master Unsigned 127 Highest MAC address above this unit’s that another MS/TP master should be set to.

model-name Character string VLX Controller

Assigned by the vendor to indicate the device model.

number-of-apdu- retries

� Unsigned 3 The number of times a message will be resent after it is assumed to be lost.


Device 200 This property consists of the object-type property and the device instance (a numeric code that identifies the device) of this device.

object-list Array An array whose elements list the object-identifier properties of all objects the device supports.

object-name Character string Device 200 No two devices are permitted to have the same object name.

object-type Enumerated Device

protocol-conformance-class

Unsigned 3 Integer from 1–6 indicating the conformance class of the device. A device must support a standardized set of services and object types to claim a particular class conformance.

protocol-object- types-supported

Bit string <Bit string> An internally used bit string. Indicates which BACnet object types reside in the device.

protocol-services- supported

Bit string <Bit string> An internally used bit string. Indicates which BACnet services the device can process.

protocol-version Unsigned 1 Indicates the version of the BACnet protocol supported by the device.

segmentation- supported

Enumerated segmented both

Device is capable of segmenting both transmission and reply messages.

system-status Enumerated Operational Other possible values besides operational are operational-read-only, download-required, download-in-progress, non-operational.

utc-offset � Signed 0 Coordinated Universal Time offset, in minutes. Not used at present.

vendor-identifier Unsigned 18 A unique code assigned by ASHRAE to the manufacturer, in this case, Alerton.

vendor-name Character string Alerton Indicates the device manufacturer.

Table 32 Properties of the VLX Device object (Continued)




Properties of VLX Event Enrollment objectsTable 33 Properties of VLX Event Enrollment objects


acked-transitions � bit string To-offnormal =1 , To-fault = 1, To-normal = 1

Indicates whether the corresponding transitions have been acknowledged. A 1 indicates that the transition was acknowledged. Set in the Event Enrollment Editor at the operator workstation.

description � Character string event enrollment 0


event-enable � bit string To-offnormal =1 , To-fault = 1, To-normal = 1

Indicates whether notifications are enabled for these event transition types. A 1 indicates that the transition will be reported. Set in the Event Enrollment Editor at the operator workstation.

event-parameters BACnetEventParameter

change_of_bitstring

event-state Enumerated NORMAL Indicates the current state of the event.

event-type � Enumerated change_of_bitstring

Indicates the type of event algorithm to be used to detect events.

issue-confirmed-notifications

Boolean TRUE Determines whether confirmed or unconfirmed notifications are used when a notification-class object isn’t used (that is, a recipient is specified). Set in the Event Enrollment Editor at the operator workstation.

notification-class Enumerated 1 Indicates the notification class to be used for event transitions. Set in the Event Enrollment Editor at the operator workstation.

notify-type Unsigned alarm Indicates whether the object is set up for alarms or events.


Event-enrollment 0

This property consists of the object-type property and the object instance, which is a numeric code that identifies the object of interest.

object-name Character string Alarm Assigned at the operator workstation.

object-property-reference

� Boolean FALSE Indicates whether the file has been saved for backup.

object-type event-enrollment

priority � Unsigned 9 Priority for issuing event notifications.

process-identifier Unsigned 3 A numeric identifier for a handling process in the recipient device. Set in the Event Enrollment Editor at the operator workstation.

recipient Enumerated <> Unused.



Properties of VLX File objects

Properties of VLX Notification Class objects

Table 34 Properties of VLX file objects


archive � Boolean FALSE Indicates whether the file has been saved for backup.

description � Character string VLX ROC File


file-access-method Enumerated stream access

file-size Unsigned 983040 The size of the file, in bytes.

file-type Character string ROC Also DDC or TRAP.

modification-date Time 4/29/1997 10:22:20:00a

The date and time the file was last modified.


file 0 This property consists of the object-type property and the object instance, which is a numeric code that identifies the object of interest.

object-name Character string File 0

object-type Enumerated file

read-only Boolean TRUE Indicates whether the file can be written to by BACnet services.

Table 35 Properties of VLX Notification Class objects


ack-required � Bit string To offnormal = 1, to fault = 1, to normal = 1

Indicates whether an acknowledgment is required for event transitions. A 1 indicates that acknowledgment is required. Set up at the operator workstation.

description � Character string Alarm Handler


notification-class Unsigned 1 Echoes the object instance.


Notification-class 1


object-name � Character string Alarm Handler 1

object-type Enumerated Notification-class

recipient-list � List <List of BACnetDestination>

Lists the devices that will receive notification when the notification class transitions. Set up at the operator workstation.

priority � Array of Unsigned Indicates the priority to be used for event notifications for TO-OFFNORMAL, TO-FAULT, and TO-NORMAL events, respectively.



Properties of VLX Program objectsTable 36 Properties of VLX Program objects




description-of-halt Character string Program halted by request

instance-of Character string alerton hq alerVLX 0*00000000*

Header information for the file. Program 0 does not support this property.


program 1024


object-name Character string Program Object 1024

object-type Enumerated Program


program-change � Enumerated READY Used to command the program state. A program can be stopped using the HALT command, for example, and started again with RESTART.

program-location Character string DDC Sequence = 60

Set when program stops.

program-state Enumerated RUNNING Possible states include RUNNING, IDLE, HALTED.

reason-for-halt Enumerated PROGRAM

reliability Enumerated NO FAULT DETECTED





Properties of VLX Schedule objectsTable 37 Properties of VLX Schedule objects


description � Character string Weekend Gym


effective-period � Sequence <BACnetDateRange>

Assigned in schedule setup at operator workstation.

exception-schedule � Sequence <Array of BACnetSpecialEvent>


list-of-object- property- references

� List <List of BACnetObjectPropertyReference>

The list of objects that this schedule commands.


schedule 0 This property consists of the object-type property and the object instance, which is a numeric code that identifies the object of interest.

object-name � Character string schedule 000


object-type Enumerated schedule

present-value � ACTIVE Indicates the value most recently written to a referenced object property. May be analog, binary, or other, depending on the controlled property.

priority-for-writing � Unsigned 16 Assigned in schedule setup at operator workstation.

weekly-schedule � Sequence <Array of BACnetDailySchedule>




Appendix F: H-O-A and trimpot status valuesTable 38 H-O-A and trimpot status values by type of EXP(EXP-2200 not shown, no outputs)

Output terminal

EXP 10-12-0 EXP 10-4-8H-O-A status (present-value: 1= HAND, 0=OFF, 2= AUTO)

BO-0 BO-0 AV-e000a

a. e is the EXP address, which ranges from 0-7.

BO-1 BO-1 AV-e001

BO-2 BO-2 AV-e002

BO-3 BO-3 AV-e003

BO-4 AO-0 AV-e004

BO-5 AO-1 AV-e005

BO-6 AO-2 AV-e006

BO-7 AO-3 AV-e007

BO-8 AO-4 AV-e008

BO-9 AO-5 AV-e009

BO-10 AO-6 AV-e010

BO-11 AO-7 AV-e011

Trimpot status (present-value = 0-100)

AO-0 AV-e012

AO-1 AV-e013

AO-2 AV-e014

AO-3 AV-e015

AO-4 AV-e012

AO-5 AV-e017

AO-6 AV-e018

AO-7 AV-e019


Installation and Operations Guide | Appendix G: Input configuration worksheets

Appendix G: Input configuration worksheets



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NOTES


Installation and Operations Guide | NOTES

NOTES


vlx/exp installation and operations...

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