handbook ltr

7/28/2019 Handbook LTR

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SC100 Sys tem Con tro l ler

Operat ion Handbook

Issue: IPN 997-00012-63C

Issue Date: August 2011

Eaton Corporation

Telecommunications Power Solutions

dcpower.eaton.com

[email protected]


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The product discussed in this literature is subject to terms and conditions outlined in Eaton selling policies. Thesole source governing the rights and remedies of any purchaser of this equipment is the relevant Eaton sellingpolicy.

No warranties, express or implied, including warranties of fitness for a particular purpose or merchantability, orwarranties arising from course of dealing or usage of trade, are made regarding the information,recommendations and descriptions contained herein.

In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strictliability or otherwise for any special, indirect, incidental or consequential damage or loss whatsoever, including butnot limited to damage or loss of use of equipment, plant or power system, cost of capital, loss of power, additionalexpenses in the use of existing power facilities, or claims against the purchaser or user by its customers resultingfrom the use of the information, recommendations and descriptions contained herein.

The information contained in this literature is subject to change without notice.

Subject to the right to use its equipment, Eaton Corporation does not convey any right, title or interest in itsintellectual property, including, without limitation, its patents, copyrights and know-how.

No part of this literature may be reproduced or transmitted in any form, by any means or for any purpose otherthan the Purchasers personal use, without the express written permission of Eaton Corporation.

Eaton, Matrix, Powerware

, Intergy

TM, CellSure

TM, SiteSure

TM, PowerManagerII

TMand DCTools

TMare trade

names, trademarks, and/or service marks of Eaton Corporation or its subsidiaries and affiliates. Unless otherwisenoted, brands, product names, trademarks or registered trademarks are the property of their respective holders.

Copyright 2008-2011 Eaton Corporation. All Rights Reserved.


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About This Guide


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AboutThis Guide

Scope

This guide covers operation of the SC100 system controller Version 2.12 or later.

Audience

This guide is intended for use by:

Installers competent in:

installing and commissioning dc power systems

safe working practices for ac and dc powered equipment

the relevant local electrical safety regulations and wiring standards

Operators and maintenance staff competent in:

operation of dc power systems

safe working practices for ac and dc powered equipment

Related Inform at ion

PowerManagerIIOnline Help

DCTools Online Help

Report ing Problems wi th this Guide

Please use this email address to report any problems you find in this guide:

Eaton DC Product Marketing CommunicationsEMAIL: [email protected]

For Furth er Inform at ion and Techn ical As sistance

For further information and technical assistance see Worldwide Support on page75.


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i iCopyright 2008-2011 Eaton Corporation. All Rights Reserved.

IPN 997-00012-63C August 2011


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Table of Contents


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TableofContents

About This GuideScope ........................................................................................................................................... iAudience ..................................................................................................................................... iRelated Information .................................................................................................................. iReporting Problems with this Guide ...................................................................................... iFor Further Information and Technical Assistance .............................................................. i

Chapter 1 General DescriptionOverview ................................................................................................................................... 1SC100 System Controller ......................................................................................................... 2Input/Output Board ................................................................................................................ 2Connections ............................................................................................................................... 4Compatible Software ............................................................................................................... 4

Chapter 2 SC100 OperationOverview ................................................................................................................................... 5Configuration File .................................................................................................................... 6Starting the SC100 .................................................................................................................... 6SC100 Operation using the Keypad and Screen ................................................................... 8

Navigation ........................................................................................................................................ 8Keypad Access Security .................................................................................................................. 8Display Settings ............................................................................................................................... 8Display Time-out ............................................................................................................................. 8Alarm Indicators .............................................................................................................................. 9

SC100 Operation Using a PC/Laptop ................................................................................... 9SC100 Identity Information ................................................................................................... 11

Chapter 3 System OperationOverview ................................................................................................................................. 13Voltage Control ...................................................................................................................... 14

Float Voltage .................................................................................................................................. 14Active Voltage Control (AVC) ..................................................................................................... 15Battery Current Limit (BCL)......................................................................................................... 15Battery Test ..................................................................................................................................... 16Equalize .......................................................................................................................................... 18Fast Charge ..................................................................................................................................... 19Temperature Compensation ........................................................................................................ 21

Rectifiers .................................................................................................................................. 22Identify ............................................................................................................................................ 23Rectifier Shutdown ........................................................................................................................ 24AC Phase Voltages ........................................................................................................................ 27

Low Voltage Disconnect (LVD) ............................................................................................ 27Alarms...................................................................................................................................... 31

Types of Alarms ............................................................................................................................. 31Active Alarm Indications.............................................................................................................. 32Common Alarm Parameters ........................................................................................................ 33System Alarm Configuration ....................................................................................................... 34System Overload Alarm ............................................................................................................... 35

Batteries ................................................................................................................................... 36Batteries Configuration ................................................................................................................. 37Battery Time Remaining ............................................................................................................... 37


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ivCopyright 2008-2011 Eaton Corporation. All Rights Reserved.

IPN 997-00012-63C August 2011

Input/Output (I/O) ................................................................................................................ 40Analog System Values ................................................................................................................... 41System States .................................................................................................................................. 42Digital Inputs .................................................................................................................................. 42Digital Outputs ............................................................................................................................... 42

Data Logging ........................................................................................................................... 43Event Log ........................................................................................................................................ 43PC Log ............................................................................................................................................. 44

Backup and Restore ................................................................................................................ 44

Chapter 4 CommunicationsOverview .................................................................................................................................. 47Communications Options ...................................................................................................... 48Direct RS232 Communications .............................................................................................. 48PSTN Modem Communications ........................................................................................... 49GSM Modem Communications............................................................................................. 51Serial Communications (RS232) Security ............................................................................. 53

Chapter 5 MaintenanceOverview .................................................................................................................................. 55Troubleshooting ...................................................................................................................... 56Replacing the System Controller or I/O Board .................................................................. 59

Appendix A SpecificationsSC100 system controller ......................................................................................................... 61IOBGP-00, -01 I/O Board ....................................................................................................... 61

Appendix B Alarm DescriptionsAppendix C Connector Pin-outs

System Controller Connector Pin-outs ................................................................................. 67I/O Board (IOBGP-00, -01) Connector Pin-outs ................................................................. 68

Appendix D System Event TypesEquipment Incident ReportWorldwide SupportIndex


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Chapter 1

General Desc ript io n


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C h a p t e r 1

General Description

Overview

Topic Page

SC100 System Controller 2

Input/Output Board 2

Connections 4

Compatible Software 4


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SC100 Handboo k

2Copyright 2008-2011 Eaton Corporation. All Rights Reserved.

IPN 997-00012-63C August 2011

SC100 System Contro l ler

The SC100 system controller is a full-featured control and monitoring solution which providesalarm notifications via dial-out modem to PowerManagerII remote monitoring software, SMStext messaging, or by relay contact closures.

Power on LED (green)

Minor alarm LED (yellow)

Critical/Major alarm LED (red) LCD

Navigation keys (4)

RS232 D9M connector

Retaining screw

Power and systemcommunications connector

The SC100 is supplied pre-configured with either a default configuration file, or with onefactory customized for a particular application. Some configuration file changes can be madewith the keypad, or all settings can be changed via a PC connected to the RS232 interface (see

details on page9).For connector pin-outs see details on page67. See Troubleshooting on page56for details ofSC100 alarms.

Inp ut/Output Board

The input/output (I/O) board provides the I/O interfaces and connections for the SC100system controller.

The I/O board includes a range of sense inputs for dc power system control and monitoring. Italso allows real time data collection from building services and other external devices, and relayoutputs for alarm signals or control of external devices.

The I/O functions are:

Sensors: Current - 3, Bus voltage - 1, Temperature - 2

Input/Output: Digital inputs: 4 pre-defined system functions, 6 user-definedRelay outputs: 6 (one also used as Monitor OK alarm)LVD contactor outputs: 2

For input and output specifications see details on page61. For connector pin-outs see details onpage68.


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General Descriptio n


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Bus voltage sense input - XH9

Power/Comms OK LED (green)

Digital inputs D1-D6 (6 user defined) - XH15A,XH15B

Digital (relay) outputs RY1-RY6 (6) - XH16-XH21

LVD contactor 2 status LED (green)

LVD contactor 2 connector - XH5

LVD contactor 1 status LED (green)

LVD contactor 1 connector - XH4

LVD power input connector - XH8

Power and RXP comms input - YH11

Current sense inputs (3) - XH6

Temperature sense inputs (2) - XH7

Not used with SC100 - XH12

DC power system digital inputs (4 pre-defined:Load Fuse Fail, Battery Fuse Fail, AC DistributionFan Fail, AC Distribution MOV Fail) - YH3

See Troubleshooting on page56for details of I/O board LED signals.


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Connect ions

The following diagram shows the connections between the SC100, the I/O board, the other dcpower system components and external devices.

SC100 system controller

I/O board

Voltage feed module

RS232 communications to local PC or laptop, or an

external modem

Digital relay outputs (6) to external devices and/oralarm indication system

Digital inputs (6) from external voltage-free switchesor relay contacts

Connection to dc common bus

Connection to dc live bus

Communications to rectifiers

DC power system digital inputs (Load Fuse Fail,Battery Fuse Fail, AC Distribution Fan Fail, ACDistribution MOV Fail)

Not used with SC100

Connection to temperature sensors (2)

Connection to current sensors (3)

Optional LVD1 contactor(with or without auxiliary switch*)

Optional LVD2 contactor(with or without auxiliary switch*)

Bus voltage sense connection

I/O power and RXP comms connection

LVD power

* See LVD Characterization on page28.

For connector pin-outs see details on page68. For input and output specifications see details onpage61.

Compat ible Software

The following software is compatible with the SC100 system controller:

DCTools Configuration Software. Latest version is available free fromdcpower.eaton.com/downloads.

PowerManagerII Remote Control and Monitoring Software. Contact your Eaton dc productsupplier for further information (see Worldwide Support on page75).


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Chapter 2

SC100 Operation


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C h a p t e r 2

SC100 Operation

Overview

Topic Page

Configuration File 6

Starting the SC100 6

SC100 Operation using the Keypad and Screen 8

SC100 Operation Using a PC/Laptop 9

SC100 Identity Information 11


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Conf igu rat ion Fi le

The operational settings of the dc power system are stored in a configuration file loaded into theSC100 system controller.

The SC100 is supplied pre-loaded with a configuration file. If this configuration file has beencustomized for the site then no further configuration changes will be necessary.

Otherwise, it is important that the settings of this configuration file are checked and changed as

required for site-specific conditions. In particular, settings that may affect the performance andlife expectancy of the battery must be checked and set according to the battery manufacturersrecommendations.

Some settings in the configuration file can be edited using the system controller's keypad (seedetails on page8), or all settings can be edited using a PC/laptop with DCTools (see details onpage9) or remotely, see Communications Options on page48.

The configuration file settings in the SC100 can be saved to (Backup) or loaded from (Restore) aPC/laptop using DCTools. See Backup and Restore on page44.

Start ing the SC100

When dc power is applied to the SC100 (via the RXP connector YS11) the start-up sequencebegins.

The following diagram shows the Status Screens and main navigation.

See Analog System Values on page41for details of the values displayed.


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Any active alarms are displayed in rotation.

Scroll to show any other rectifiers.

List of any active alarms.

Operate control processes.

SC100, I/O board and rectifier identityinformation.

Configure control processes.


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SC100 Operat ion us ing th e Keypad and Screen

Navigation

Symbol Function

Move up/down to previous/next screen.

Move up/down in a list (hold to go to the top or bottom of thelist).

Highlight options in a screen.

Increase/decrease a value in a configuration screen.

Use either up/down key to scroll

Go to Main Menu screen

Perform the action shown

Go to default status screen

Keypad Access Security

This feature prevents accidental or unauthorized changes to settings from the SC100 keypad.

To use DCTools to enable/disable keypad access

In DCTools go to Communications.

Set UI Access to:

Unprotected - keypad access is allowed, or

Protected - keypad access is denied (can be temporarily over-ridden, see below).

To temporarily enable keypad access at the SC100 when access is set to Protected

Press Up and Down keys together for 5 seconds.

Keypad access is now temporarily enabled. Keypad access control reverts back to Protectedmode after the display goes back to the Summary screen.

Display Settings

To change the display contrast

Use the keypad to go toMenu > Configuration > Controller> Edit > Contrast.

To test the LCD

Use the keypad to go toMenu > Controls > Screen Test > Start.

Press to stop the screen test.

To change the display orientation (horizontal/vertical)

Use the keypad to go toMenu > Configuration > Controller> Edit > Display.

Display Time-out

If there is no keypad activity for 2 minutes the display will go back to the default Status Screen.


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Alarm Indicators

Visual indicators

Power on LED (green)

Minor Alarm LED (yellow)

Critical/Major Alarm LED (red)

???The system value cannot be displayed because of a failed, disconnected orunconfigured sensor.

Audible indicator

One beep indicates an invalid key press

One beep every 2 seconds Minor alarm is active

Continuous sound Critical/Major alarm is active

Critical/Major alarms always override Minor alarms.

To stop the audible indicator

Press any key

The audible indicator will restart at the next active alarm or alert message.

To enable/disable the audible alarm indicator

Either:

Use the keypad to go to: Menu > Configuration > Audible Alarm.Or:

In DCTools go to:Alarms >Alarm Configuration.

When Disabled, the audible indicator will still indicate an invalid key press.

SC100 Operat ion Using a PC/Laptop

DCTools is configuration software for editing a system controller's configuration file (on-line)and monitoring the operation of Eaton's dc power systems. It is available free from

dcpower.eaton.com/downloads.

DCTools can be run on a PC/laptop connected to the SC100's RS232 port.

For remote PC/laptop connection details see Communications Options on page48.

Before you start you will need:

The latest version of DCTools available from: dcpower.eaton.com/downloads.

A PC/laptop with RS232 port and DB9 F/F Null-modem cable (RadioShack 55010600,Jaycar WC7513, or similar. Cross-over connections: 5-5, 2-3, 3-2.)


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To connect a PC/laptop to the SC100:

1 Download the latest version of DCTools from: dcpower.eaton.com/downloads.

2 Install DCTools on the PC/laptop.

3 Connect a null-modem cable from the COM1 RS232 port on the PC/laptop to the RS232connector on the SC100.

Ensure the cable is secured so that no force is applied to the RS232 connector as this may

damage the connector. If COM1 port is not available or for more details see Direct RS232 Communications on page

48.

4 Start DCTools to open the Connection List. Check the box for the COM1 connection.

5 DCTools will now connect to the SC100.

If connection is unsuccessful refer to DCTools help (press F1) or Troubleshooting on page56.

6 For details of the SC100 control and monitoring functions available via DCTools see SystemOperation on page13.

For help using DCTools press F1.


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SC100 Identi ty Info rmation

The following identity information is stored in the SC100.

Parameter Description Where to find:

Serial Number The SC100 serial number (factory set). SC100: Menu > Identity >SC100Identity

DCTools:Configuration > Identity

Software Version(App Version)

The version of the embeddedsoftware in the SC100 (factory set).

If required, the following site specific information can be stored in the SC100 to assist sitemanagement.


SystemManufacturer

The manufacturer of the dc powersystem.

DCTools:Configuration > Identity

System Type The dc power system model number.System SerialNumber

The dc power system serial number.

System Location Location of dc power system at thesite.

Site Name Name of the site.

Site Address Address of the site.

Site Notes Any notes relevant to site access,location or other matters.

Contact Contact name, phone number, and soon.

ConfigurationName

Reference name of the configurationfile in the SC100.


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Chapter 3

System Operat ion


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C h a p t e r 3

SystemOperation

Overview

Topic Page

Voltage Control 14

Rectifiers 22

Low Voltage Disconnect (LVD) 27

Alarms 31

Batteries 36

Input/Output (I/O) 40

Data Logging 43

Backup and Restore 44


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Voltage Contro l

The output voltage of the rectifiers is controlled by a number of control processes. Thefollowing diagram shows the various control processes, measured values and operating valuesthat determine the rectifier output voltage.

If ac fails then any active control process stops. No control process can start until the ac supply isrestored.

Float Voltage

Configuration

Set the following parameter.


Float Voltage Set to the voltage required to maintain optimum

battery charge (at the nominal ambienttemperature*) as specified by the batterymanufacturer. The bus voltage may be adjustedabove or below this value by the System ControlProcesses.

*This is the same as the ReferenceTemperature used by TemperatureCompensation. See details on page21.

SC100: Menu >Configuration > System >Edit > Float Voltage

DCTools:Control Processes > VoltageControl

The system voltage is limited by maximum and minimum values. The values are viewable inDCTools at Control Processes > Voltage Control. These values are not configurable.


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Active Voltage Control (AVC)

Active Voltage Control maintains a constant float voltage under varying load current bymonitoring the bus voltage and adjusting the rectifier output voltage to compensate for anyvoltage drop. This prevents undercharging the batteries during high load demand.

To enable Active Voltage Control

In DCTools go to: Control Processes > Active Voltage Control.

Active Voltage Control is normally enabled. Only disable if there are particular reasons.

Information

The following information is available about AVC.


State Indicates if AVC is active or inactive.

DCTools:Control Processes > ActiveVoltage Control

Target Voltage AVC will set the Base Voltage to attempt tomaintain the bus voltage to this value.

Voltage Offset The difference between the Base Voltage and the

Target Voltage.

Battery Current Limit (BCL)

Battery Current Limit automatically limits the battery recharge current to:

Prevent excessive battery charge current in under-loaded systems

Minimize gas release in VRLA batteries

Reduce the load on a standby generator.

Two current limit values can be set (both are a percentage of the C10 rating of the battery):

Battery Current Limit (Normal Limit): BCL value for use when utility ac is available.

Engine Run Limit (optional): BCL value for use when ac is supplied by a standbygenerator. This reduces the load on the generatorand allows a smaller generator to be used.

Engine Run Limit is activated by a signal from an ac standby generator.

To enable BCL

Use the SC100 keypad to go to:Menu > Configuration > Battery Current Limit > Edit

Or, in DCTools go to: Control Processes >Battery Current Limit.

To activate Engine Run BCL

Connect a voltage free relay contact (that will operate when the standby generator starts) toa Digital Input.

In DCTools go to Digital Inputs.

Configure the selected Digital Input and set Function to Engine Run.

In DCTools go to Control Processes >Battery CurrentLimit and set the Engine Run Limit.


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Information

The following information is available about BCL.


State Indicates if BCL is active or inactive. SC100: Menu >Configuration > BatteryCurrent Limit > Edit

DCTools:Control Processes > BatteryCurrent Limit

Engine Run State Indicates if Engine Run BCL is active.DCTools:Control Processes > BatteryCurrent Limit

Voltage Offset The bus voltage adjustment made by BatteryCurrent Limit is applied to the OperatingVoltage to produce the Target Voltage. Target

Voltage is used as the input to the AVC function.

Configuration

Set the following parameters.


Battery Capacity Set to the rated 10 hour capacity of the installedbattery strings. Zero means no battery isinstalled.

SC100: Menu >Configuration > System >Edit > Battery Capacity>Edit

DCTools: Batteries

Current Limit BCL maintains the battery current below thisvalue, which is a percentage of the installed C10Battery Capacity.

DCTools: Control Processes

> Battery Current Limit

Engine Run Limit The Battery Current Limit setting when Engine

Run is active. BCL maintains the battery currentbelow this value when the engine run digitalinput is active (engine run is enabled). This limitis expressed as a percentage of the installed C10Battery Capacity.

Battery Test

Battery Test is a preventative maintenance tool that monitors the discharge capabilities toensure that the condition of the battery has not deteriorated over time.

The SC100 temporarily reduces the output voltage of the rectifiers to just below the bus voltagefor a set duration. The battery then supplies power to the load. A battery test passes if thebattery voltage remains above a predetermined level for the duration of the test.

Battery Tests can be scheduled to occur at regular intervals, and/or can be started/stoppedmanually, and/or can be started by an external relay contact or switch.

Battery Test does NOT function during a Fast Charge or Equalize, or during the lock-out periodafter an ac supply failure.

If a Digital Input has the function "Start Battery Test" then a Battery Test will start when theDigital Input becomes active.


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To enable Battery Test (or to start or stop a test manually)

Use the SC100 keypad to go to:Menu > Configuration > Battery Test > Edit.

Or, in DCTools go to: Control Processes >Battery Test

To use an external relay contact to activate a Battery Test (optional)

Connect a voltage free relay contact or switch to any Digital Input.

In DCTools go to Digital Inputs.

Configure the selected Digital Input and set Function to Start Battery Test.

To reset a Battery Test Fail alarm

In DCTools go to: Alarms.

Click on Reset Battery Test Fail.

Information

The following information is available about Battery Test.


State Indicates if Battery Test is disabled, locked-out, active

or inactive. SC100*: Menu > Controls >Battery Test

DCTools: Control Processes> Battery Test

Remaining Time The time to the end of the currently active Battery Test.

Next Start Time The time to the start of the next Battery Test.

Lockout Remaining The time remaining until a Battery Test can be started.


Voltage Offset The adjustment to the bus voltage being applied due tothe Battery Test. While a Battery Test is running, therectifiers are turned down to force the battery to carrythe load.

*Only if Battery Test is Enabled.

Configuration



TerminationVoltage

If the bus voltages drops below this value during aBattery Test, then the test fails. SC100: Menu >

Configuration > Battery Test


Duration The maximum time a Battery Test process will beactive. The battery test will pass if the bus voltageremains above the Battery Test Termination Voltagefor the duration of the test.

Interval The time between scheduled battery tests. The intervalperiod begins at the start of a battery test. Zero disablesscheduled battery tests. Zero also disables the Lockoutfollowing an ac supply failure, allowing an immediatemanual test.


Lockout Battery Test is is not able to start for this period afteran ac fail. This allows time for a battery to rechargebefore a Battery Test.


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Equalize

Equalize charges batteries at a higher voltage after they have been fully charged to ensure thatall individual cell voltages are the same, that electrolyte is distributed evenly, and that sulfatecrystal buildup on the plates is reduced.

Equalize can be scheduled to occur at regular intervals and/or can be started/stoppedmanually.

Refer to the battery manufacturer's instructions before using Equalize.

If a Digital Input has the function "Start Equalize" then a manual equalize cycle will start whenthe Digital Input becomes active.

To enable Equalize (or to start or stop Equalize manually)

Use the SC100 keypad to go to:Menu > Configuration > Equalize > Edit.

Or, in DCTools go to: Control Processes >Equalize.

To use an external relay contact to activate an Equalize (optional)

Connect a voltage free relay contact or switch to any Digital Input.

In DCTools go to: Digital Inputs.

Configure the selected Digital Input and set Function to Start Equalize.

Information

The following information is available about Equalize.


State Indicates if Equalize is Disabled, Active or Inactive. SC100*: Menu > Controls >Equalize

DCTools: Control Processes> Equalize

Next Start The time to the start of the next scheduled Equalize.

Remaining Time The time to the end of the currently active Equalize.

Voltage Offset The adjustment to the bus voltage being applied due tothe Equalize.


*Only if Equalize is Enabled.

Configuration



Interval The time between scheduled Equalize. The intervalperiod begins at the start of an Equalize. Zero disables

scheduled Equalizes. SC100: Menu >Configuration > Equalize >Edit


Duration The duration of a scheduled Equalize. Use the valuerecommended by the battery manufacturer.

Equalize Voltage The bus voltage maintained during an Equalize cycle.Use the value recommended by the batterymanufacturer. The bus voltage is further adjusted byTemperature Compensation.


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Fast Charge

After an ac supply failure, Fast Charge automatically increases the float voltage of the powersystem to recharge the batteries as quickly as possible.

Enable Fast Charge if the site experiences frequent ac supply failures.

Fast Charge does NOT function during a Battery Test, Equalize or if the battery current sensorfails.

If Fast Charge is used then Battery Current Limit (BCL) should also be used. See Battery CurrentLimit on page15for details.

To enable Fast Charge (or to stop Fast Charge manually)

Use the SC100 keypad to go to:Menu > Configuration > Fast Charge > Edit.

Or, in DCTools go to: Control Processes >Fast Charge.

Information

The following information is available about Fast Charge.

Parameter Description Where to find:State Indicates if Fast Charge is Disabled, Active or Inactive.

SC100*: Menu > Controls >Fast Charge

DCTools: Control Processes> Fast Charge

Ah Discharged The current level of battery discharge. A Fast Chargecycle is started if this value is above the Ah Threshold.

Maximum TimeRemaining

The maximum time to the end of the currently activeFast Charge.

Voltage Offset The adjustment to the bus voltage being applied due tothe Fast Charge.

*Only if Fast Charge is Enabled.


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Configuration



Voltage The bus voltage maintained during a Fast Charge. Usethe value recommended by the battery manufacturer.

SC100: Menu >Configuration > FastCharge > Edit


Voltage Threshold If the bus voltage drops below this value during an acsupply failure, then Fast Charge starts when the acsupply is restored. Fast charge can also be started basedon theAh Threshold.


Ah Threshold IfAh Discharged exceeds this value during an ac supply

failure, then Fast Charge starts when the ac supply isrestored. The threshold is given as a percentage ofinstalled C10 battery capacity. Fast charge can also bestarted based on the Voltage Threshold.

MaximumDuration

The maximum duration of a Fast Charge. Use the valuerecommended by the battery manufacturer.

RechargePercentage (%)

The ratio of ampere-hours recharged to the ampere-hours discharged. Fast Charge stops either when the Ahrecharged equals the Ah discharged x Fast ChargeRecharge Percentage, or afterMaximum Duration.

Battery Capacity Set to the rated 10 hour capacity of the installed batterystrings. Zero means no battery is installed.

SC100: Menu >Configuration > System >Edit > Battery Capacity>Edit

DCTools: Batteries

Reset Battery StateThe SC100 monitors battery discharge and maintains a value calledAh Discharged. In a newSC100Ah Discharged is set to zero. During operation of the dc power system the value isincreased as the battery is discharged, and reduced as the battery is recharged.

The value ofAh Discharged is used to start the Fast Charge control process. See details on page19.

To view current value of Ah Discharged

In DCTools go to: Batteries.

If a battery or the SC100 is changed, then reset the value ofAh Discharged to zero (when thebattery is fully charged).

To set the value of Ah Discharged back to zero In DCTools go to: Batteries. Click Reset Battery State.

Any active or pending Fast Charge or Equalize will be cancelled.


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Temperature Compensation

As the ambient temperature of a battery drops (or rises) the voltage required to maintain fullcharge increases (or decreases). Temperature Compensation automatically varies the floatvoltage to cancel the effects of changing temperature.

Enable Temperature Compensation for optimum battery life and battery capacity over a widertemperature range.

Temperature Compensation does NOT function during a Battery Test.

To enable Temperature Compensation

Use the SC100 keypad to go to:Menu > Configuration > Temp Compensation > Edit.

Or, in DCTools go to: Control Processes >Temperature Compensation.

Information

The following information is available about Temperature Compensation.


State Indicates if Temperature Compensation is active or

inactive.

SC100: Menu >

Configuration > TempCompensation > Edit

DCTools: Control Processes> TemperatureCompensation

BatteryTemperature

The temperature measured by the battery temperaturesensor.

SC100: Battery Temp

DCTools: Batteries

Voltage Offset The adjustment to the bus voltage being applied due tothe Temperature Compensation. Offset is zero whenthe battery temperature equals the referencetemperature.


Configuration



Cells Per String The number of 2V cells per battery string (for example:24 in a 48V nominal system).

SC100: Menu >Configuration > TempCompensation > Edit > CellsPer String

DCTools: Batteries

Slope Bus voltage adjustment rate. Use the valuerecommended by the battery manufacturer.

No additional voltage adjustment is madebelow 0C or above 50C.

SC100: Menu >Configuration > TempCompensation > Edit


ReferenceTemperature

The temperature where no voltage adjustment isapplied. Refer also to Float Voltage on page14.


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Recti f iers

The SC100 registers all rectifier modules as they are inserted into the dc power system.

Information

The following information is available from rectifiers.


Software Version Version of rectifier embedded software. SC100: Menu > Identity >Rectifier Identity

DCTools: Configuration >RXP

Serial Number(S/N)

Rectifier serial number.SC100: Menu > Identity >Rectifier IdentityDCTools: RectifiersPower Rectifier output power as a percentage of Max. Power

Limit.

State Registered - communicating with the SC100.Un-registered - there is a rectifier compatibility orcommunications problem.

DCTools: Rectifiers

AC Voltage The ac voltage measured by the rectifier.

Voltage Rectifier's dc output voltage. This is the Float Voltageadjusted by any the voltage control processes such asTemperature Compensation, Active Voltage Control,and so on. See further details on page14.

Current Rectifier's output current.

Heatsink Temp The measured rectifier heatsink temperature.

Max Power Limit Rectifier's maximum output power (factory set).

Max Current Limit The maximum dc current limit value of the rectifier.

Adjust Rectifier Current Limit to set a loweroperating current limit.

Max AC CurrentLimit

The maximum ac current limit value of the rectifier.

Adjust Rectifier AC Current Limit to set alower operating current limit.

Status Information about rectifier alarms.


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Common Rectifier Configuration

The following parameters (common to all rectifiers) can be configured.


Rectifier (DC)Current Limit

The output current limit of the rectifier. If set to zero,then the output current limit is maximum.

SC100: Rectifiers > Rect.Settings

DCTools: Rectifiers

AC RectifierCurrent Limit The input current limit of the rectifier. If set to zero,then the input current limit is maximum.

Rectifier CurrentShare

Current Share ensures that the total output power ofthe power system is evenly shared between allrectifiers.

Set to Enabled unless there is a specific reason todisable.

OVSD Set Point Over Voltage Shut Down. A rectifier will shut down ifits output voltage exceeds this value.

Recommended value is 59.2V for 48V nominalsystems, 28.6V for 24V nominal systems.

DCTools: Rectifiers

Ramp Up Slope The ramp-up slope of the rectifier, as a percentage ofthe rectifier rated current.

Enable RectifierShutdown

Set to Enabled to allow rectifier shut down.

Load Based Rectifier Shutdown is not availablewith APR48-3G, EPR48-3G, APR24-3G andCR48-3G rectifiers.

Start Up Delay The delay from ac turn-on before the rectifier outputturns on.

See Voltage Control on page14for details of the rectifier's output voltage control.

Identify

The rectifier's registration number does not correspond to a physical position in the dc powersystem.

To identify a rectifier

On the SC100 keypad go to: Menu > Identity > Rectifier Identity.

Select a rectifier. All LEDs on the selected rectifier will flash for 60 seconds.

Rectifier serial numbers are printed on a label on the front of each rectifier.


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Rectifier Shutdown

Manual Rectifier Shutdown

To shut down a rectifier

In DCTools go to: Rectifiers > Configuration.

Set Rectifier Shutdown to Enabled.

In the Rectifiers table select the Shutdown check box. The rectifier will shut down and the yellow LED will be on.

The SC100 will restart any shutdown rectifiers if: ac has failed, or more than one rectifier hasfailed, or the bus voltage is below the Low Load threshold, or Rectifier Shutdown is disabled.

Shutdown rectifiers will restart if Load Based Rectifier Shutdown is enabled.

Rectifier Restart

To restart all shutdown rectifiers

Use the SC100 keypad to go to: Menu > Controls >Restart All Rectifiers.

Or

In DCTools go to: Rectifiers. Click Restart All Rectifiers.

To restart individual rectifiers

In DCTools go to: Rectifiers.

For each rectifier clear the Shutdown check box.

The rectifier(s) will then resume normal operation.

The SC100 will restart any shutdown rectifiers if: ac has failed, or more than one rectifier hasfailed, or the bus voltage is below the Low Load threshold, or Rectifier Shutdown is disabled.

The SC100 will restart a shutdown rectifier if LBRS is active. See Load Based Rectifier Shutdownon page24.

Load Based Rectifier Shutdown

Load Based Rectifier Shutdown is not available with APR48-3G, EPR48-3G, APR24-3G andCR48-3G rectifiers.

If Load Based Rectifier Shutdown (LBRS) is enabled then the SC100 automatically shuts downrectifiers when the total load current is significantly less than the total rectifier capacity.

This raises the average load on the remaining rectifiers which will then operate at a higherefficiency. This results in a decrease in system power consumption.

The run time of all rectifiers is recorded and balanced to ensure even aging (and a balanced

number of rectifiers on each ac phase if rectifiers are assigned to phases).The SC100 will progressively restart rectifiers if the load increases.

Rectifiers shut down by LBRS will have the yellow LED on.

If N plus 0 rectifier redundancy is selected, then only sufficient rectifiers to supply the load will beon. If N plus 1 rectifier redundancy is selected, then one additional rectifier will always be on.

The SC100 will automatically restart all rectifiers if ac supply has failed, or more than one rectifierhas failed, or Battery Test / Equalize / Fast Charge are active, or the bus voltage is below the LowLoad threshold.


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To enable Load Based Rectifier Shutdown

In DCTools go to: Rectifiers > Load Based Rectifier Shutdown

Ensure that Rectifier Start Up Delay is less than 30 seconds. See information on page23. LBRSwill not function correctly if the start up delay is more than 30 seconds.

Information

The following information is available about Load Based Rectifier Shutdown.


State Disabled: LBRS is not enabled.Inactive: LBRS is enabled but not active.Active: LBRS is operating.Testing: See details on page26.Suspended: See details on page26.Not enough Rectifiers: See Redundancy setting on page25.

SC100*: Controls > LBRS

DCTools: Rectifiers > LoadBased Rectifier Shutdown

Run Time The run time of each rectifier DCTools: Rectifiers

*Only if Load Based Rectifier Shutdown is Enabled.

Configuration



Rectifier CycleInterval

The time interval in hours that the SC100 willcycle rectifiers when the LBRS process is active.

SC100: Control Processes >LBRS

DCTools: Rectifiers > LoadBased Rectifier Shutdown

Redundancy If N plus 0 rectifier redundancy is selected, then onlysufficient rectifiers to supply the load will be on. If Nplus 1 rectifier redundancy is selected, then oneadditional rectifier will always be on.

Rectifier CycleHigh Threshold

LBRS restarts rectifiers if the load is more than thispercentage of the total rectifier capacity.

Rectifier Cycle LowThreshold

LBRS shuts down rectifiers if the load is less than thispercentage of the total rectifier capacity.

Battery Test Before

LBRSSee details on page25.

Restart AllRectifiers

Press to temporarily restart all rectifiers shut down byLBRS.

Disable LBRS to permanently restart allrectifiers.

Battery Test Before LBRS

If LBRS and Battery Test Before LBRS are Enabled then, at startup of the SC100, a Battery Test willbe started and LBRS will be Inactive. LBRS will only becomeActive if the Battery Test issuccessful.

If the Battery Test fails then LBRS will remain inactive until a successful Battery Test is completed(or Battery Test Before LBRS is Disabled).


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LBRS Test

The LBRS Test function will cycle the rectifiers once.

LBRS Test is not available if LBRS is Disabled, Suspended orInactive. If Battery Test BeforeLBRS is enabled then a Battery Test will be performed (see details on page25).

To start an LBRS Test

Configure and Enable LBRS (see details on page25). In DCTools go to: Rectifiers > Load Based Rectifier Shutdown > LBRS Test.

Set LBRS Restart After Test to the required setting.

When the test is completed or stopped normal LBRS operation will start after this delay. When LBRS isActive, click Start.

LBRS Test will cycle the available rectifiers with a cycle time of 90 seconds until all rectifiershave been shutdown and restarted.

If required, click Stop to end an LBRS Test before all rectifiers have been shutdown andrestarted.

LBRS Suspend

If required, when LBRS is active it can be temporarily suspended for system maintenance orother reasons.

LBRS Suspend is not available if LBRS is Disabled, Testing orInactive.

To temporarily suspend LBRS

In DCTools go to: Rectifiers > Load Based Rectifier Shutdown > LBRS Suspend.

Set LBRS Restart to the required setting.

Normal LBRS operation will start after this delay.

When LBRS isActive, click Suspend. LBRS will be suspended and all shutdown rectifiers will restart.

Normal LBRS operation will resume automatically after the LBRS Restart delay. Or, clickResume.

LBRS is automatically suspended if the Battery Fuse Fail alarm is active.

Auxiliary Temperature Shutdown

This feature requires a second temperature sensor connected to the I/O board.

All rectifiers can be shutdown if the temperature measured by the Auxiliary Temperaturesensor is outside a configured range.

If a sensor used for Auxiliary Temperature Shutdown becomes faulty or disconnected this

may cause an unnecessary rectifier shutdown.

See also LVD Auxiliary Temperature Disconnect on page31.


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To set Auxiliary Temperature Shutdown

In DCTools go to Control Processes > LVD.

Set the Auxiliary Temperature High/Low Thresholds and Hysteresis values as required.See System Alarms on page31.

Set Enable Aux Temp Rectifier Shutdown to Enabled.

If using PowerManagerII Groups, then in DCTools go toAnalog Inputs. SetAuxiliaryTemperature Group as required.

See PowerManagerII online help for details.

All rectifiers will now shutdown if theAuxiliary Temperature is out of range.

AC Phase Voltages

The SC100 can display the three ac phase voltages in a three-phase system. The phase voltagesare the average ac voltages measured by one or more rectifiers supplied from each of the threephases.

To assign rectifiers to phases from the SC100 keypad

On the SC100 keypad go to: Menu > Identity > Rectifier Identity.

Select a rectifier.

As each rectifier is selected the Identify function will cause it to flash all its LEDs. Choose Phase, then choose the ac phase that supplies the rectifier (Phase 1, Phase 2, or Phase

3).

Press Select.

Repeat for other rectifiers.

For best accuracy assign all rectifiers to the appropriate Phase.

To assign rectifiers to phases in DCTools

Connect to the SC100 using DCTools. See details on page9. In DCTools go to: Rectifiers. Expand theAC Phase Allocations table.

Copy the Serial Numbers of registered rectifiers from the Rectifiers table to the Serial Numbercolumn in theAC Phase Allocations table.

For each rectifier double click on the entry in the Phase column. Select the ac phase thatsupplies the rectifier (AC Phase 1,AC Phase 2, orAC Phase 3).

To view the phase voltages

On the SC100 keypad go to:AC Voltage. See Menu on page6.

In DCTools go to: Analog Inputs.

An AC Phase Rectifier Missing alarm is activated if a rectifier assigned to an ac phase is notregistered.

Low Voltage Disconnect (LVD)

Low Voltage Disconnects may be connected either as load disconnect or battery disconnectdepending on the dc power system model. They have two purposes:

to protect a VRLA battery from deep discharge and premature failure, and/or

to reduce the load on a battery under discharge so that high priority equipment operatesfor a longer time after an ac supply failure.


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The SC100 has two LVD control channels (LVD1 and LVD2) with three modes of operation:

1 Normal Mode: In this mode LVD2 Slave Mode andAC Timer Mode are disabled, and LVD2(if Enabled) will only disconnect after LVD1.

2 LVD2 Slave Mode: In this mode LVD2 has the same operating parameters as LVD1.

3 AC Timer Mode: The LVD will disconnect either after the AC Timer Disconnect Delay, orthe bus voltage drops to the Disconnect Voltage, whichever happens first. Both LVD1 andLVD2 can be set to AC Timer mode if required (but LVD2 will only disconnect after LVD1).

The following diagram shows a typical two LVD configuration. This allows lower priority loadsto be disconnected first (LVD1), either at a specified battery voltage or a specified time intervalafter an ac supply failure. This then prolongs battery power for the highest priority loads(LVD2). The battery will be disconnected when the battery voltage reaches its minimum presetvoltage.

LVD1 - low priority loaddisconnect (disconnectsfirst).

LVD2 - battery disconnect(only disconnects afterLVD1)

Connections to highpriority loads (for exampletransmission equipment).

Connections to lowpriority loads.

Connection to the SC100

system controller via theI/O board.

Characterization

If auxiliary contacts are fitted to the LVD contactor(s)*, then the LVD Characterization processdetermines the optimum operating voltages to suit the contactor(s) coil voltage. These valuesare stored in the SC100 and on the I/O board.

An LVD Characterization Erroralarm will be activated if the SC100 detects that thecharacterization values stored in the SC100 and on the I/O board are different. This happenswhen:

The SC100 is replaced. To clear the alarm, on the SC100 select Use IOB Values.

The I/O Board is replaced. To clear the alarm, on the SC100 select Use SC Values.

Both the SC100 and the I/O Board are replaced. In this case, re-characterize thecontactor(s).

When a contactor is re-characterized it will disconnect and re-connect several times. Refer toMaintenance in the dc power system Installation and Operation Guide for full instructions.


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Factory-fitted contactors will be characterized at the factory. If an existing contactor is replaced,characterize the new contactor from the SC100.

In this case, there will be no LVD Characterization Error alarm.

* LVD Characterization is only available for LVD contactors with auxiliary contacts. If auxiliarycontacts are not fitted then the nominal LVD coil voltage must equal the dc power system nominal

bus voltage. See LVD Specifications on page62

.

To enable LVD1 and/or LVD2

Use the SC100 keypad to go to:Menu > Configuration > Low Volts Disconnect > Edit

Or, in DCTools go to: Control Processes > LVD

To manually connect or disconnect an LVD

Use the SC100 keypad to go to:Menu > Controls > LVD1/LVD2 > Control

Select Manual Connect or Manual Disconnect to connect or disconnect the LVD contactor.

The LVD will remain in the selected state until another state or Automatic Control is selected.

SelectAutomatic Control to return the LVD to automatic operation.

Information

The following information is available about LVDs.


State Connected: the LVD contactor is automaticallyconnected.

Disconnected: the LVD contactor is automaticallydisconnected.

Idle: the LVD state has not been set since the SC100last restarted.

Manual: the LVD contactor is set Manual Connect orManual Disconnect from the SC100 keypad.

Failed: see LVD Fail alarm on page64.

Missing: there is no connection to the I/O board.

SC100: Menu > Controls >LVD1/LVD2

DCTools: Control Processes> LVD


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Configuration

The following parameters must be configured to set the LVDs.


Inhibit Period The minimum time an LVD stays connected ordisconnected before it can change state.


Allow Front PanelLVD Control Disables LVD manual control from the controller frontpanel. DCTools: Configuration >Communications

LVD1/LVD2 Type Select the correct contactor type (NO or NC) and ifauxiliary contacts are used.

If auxiliary contacts are not used, then thenominal contactor coil voltage must equal thenominal dc power system voltage (LVDCharacterization is not available).

Enable Slave Mode(LVD2 only)

LVD2 will disconnect and reconnect simultaneouslywith LVD1. Other LVD2 configuration parameters areignored.

Enable AC Timer If Enabled, LVD will disconnect after theAC TimerDisconnect Delay or at the Disconnect Voltage, whicheveroccurs first.

AC TimerDisconnect Delay

See Enable AC Timer.

LVD1 DisconnectVoltage

If the bus voltage drops to this value, then anyshutdown rectifiers are restarted (even if LVD isdisabled). If the bus voltage is still lower than thisvalue after the LVD Recognition Period, then the LVDwill disconnect.

LVD2 DisconnectVoltage

If the bus voltage drops to this value after the LVDRecognition Period, then the LVD will disconnect. This

parameter is ignored if Enable LVD2 Slave Mode isEnabled.


LVD1 ReconnectVoltage*

LVD1 reconnects when the bus voltage has been abovethis value for the LVD1 Recognition Period and LVD2is disabled, or has already reconnected, or is in slavemode.

LVD2 ReconnectVoltage*

LVD2 reconnects when the bus voltage has been abovethis value for the LVD2 Recognition Period. Thisparameter is ignored if Enable LVD2 Slave Mode isEnabled.

LVD1 RecognitionPeriod

See LVD1 Disconnect Voltage and LVD1 ReconnectVoltage.

LVD2 RecognitionPeriod

See LVD2 Disconnect Voltage and LVD2 ReconnectVoltage.

EnableLVD1/LVD2 Aux

Temp Disconnect

See Auxiliary Temperature Disconnect on page31.

* If the LVD is used as a load-disconnect, ensure the reconnect voltage is set higher than theexpected open-circuit recovery voltage of the discharged batteries.


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Auxiliary Temperature Disconnect

This feature requires a second temperature sensor connected to the I/O board.An LVD can be set to disconnect if the temperature measured by the Auxiliary Temperaturesensor is outside a configured range (as well the standard voltage controlled LVD operation).

If a sensor used for Auxiliary Temperature Disconnect becomes faulty or disconnected this

may cause an unnecessary LVD disconnect.

See also Rectifier Auxiliary Temperature Shutdown on page26.

To set Auxiliary Temperature Disconnect

In DCTools go to Control Processes > LVD.

Set the Auxiliary Temperature High/Low Thresholds and Hysteresis values as required.See System Alarms on page31.

Set Enable LVD1 Aux Temp Disconnect and/or Enable LVD2 Aux Temp Disconnect to Enabledas required.

If using PowerManagerII Groups, then in DCTools go toAnalog Inputs. SetAuxiliaryTemperature Group as required.

See PowerManagerII online help for details.

LVD1 and/or LVD2 will now disconnect if the Auxiliary Temperature is out of range.

Alarms

An SC100 supplied with a standard configuration file (see details on page6) has a standard setof alarms configured and enabled. This will be sufficient for standard dc power systemoperation.

For specific alarm arrangements all SC100 alarms can be individually enabled or disabled andare configurable.

Types of Alarms

The SC100 provides two types of alarms:

Alarm type Description Configuration

System alarms Generated by the operating values of dc powersystem (voltages, currents, temperatures, etc)and the operation of power system modules(rectifiers, circuit breakers, fuses, and so on).The SC100 system alarms are listed in AlarmDescriptions on page63.

See details on page34.

Digital Input (DI)alarms

Activated when a DI is in its active state. See details on page42.


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Active Alarm Indications

All alarms have a configured Severity: Critical Major Minor Warning

The Severity determines how an active alarm is indicated:

Severity Alarm indications Details

SC100 Major alarm LED will turn on. See details on page9.

SC100 Minor alarm LED will turn on. See details on page9.

If the SC100 audible indicator is enabled, it willsound until a key is pressed.


The alarm name and severity icon will bedisplayed on the SC100 main screen.


The Event Log will record the alarm activation. See details on page43.

If configured, an SMS text message will be sent toone or more cell phones.


If configured, PowerManagerII control andmonitoring software will be notified by modemcallback. PowerManagerII can initiate variousactions when it receives an alarm notification.

Refer to thePowerManagerII onlineHelp.

In DCTools (if connected), the alarm name andseverity icon will be displayed in theAlarms list onthe System page.

See DCTools screen.

If configured, one or two digital outputs (relays)will be operated.

Refer to the alarm'sconfiguration details.

To view a list of active alarms

Use the SC100 keypad to go to:Menu > Alarms.

Or, in DCTools go to System.


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Common Alarm Parameters

The following parameters are common to multiple alarms.


Enable AudibleAlarm Indication

Enable or disable the audible alarm indicator.

DCTools: Alarms > AlarmConfiguration

Alarm RecognitionPeriod

All alarms (except those listed below) areactivated only after the alarm condition ispresent for this period.

These alarms have individual recognitionperiods: AC Fail, System Overload.

These alarms do not have recognitionperiods: Battery Test Fail, ConfigurationError, Missing Hardware, UnknownHardware, and all LVD alarms.


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System Alarm Configuration

The following system alarm parameters can be configured.


Severity Set to Disabled if no indication is required when thealarm is active. Or, set to the required alarm priority.See details on page32.

DCTools: Alarms > AlarmState

DO Mapping A If required, select a digital output (relay) that will beoperated when the alarm is active.

DO Mapping B If required, select a second digital output (relay) thatwill be operated when the alarm is active.

AC FailRecognition Period

An ac supply failure condition must be continuouslyactive for this period before an AC Fail alarm isgenerated.

DCTools: Alarms > Alarm

Configuration

Enable High FloatTracking

The High Float alarm threshold will be adjusted whenthe operating voltage is changed by a voltage controlprocess.

High FloatThreshold

High Float alarm is activated if the bus voltage isabove this value.

Enable Low FloatTracking

The Low Float alarm threshold will be adjusted whenthe operating voltage is changed by a voltage controlprocess.

Low FloatThreshold

Low Float alarm is activated when the bus voltage isbelow this value.

High LoadThreshold

High Load alarm is activated if the bus voltage isabove this value.

Low LoadThreshold

Low Load alarm is activated if the bus voltage is belowthis value.

Battery Fuse FailActive State

Specifies if the alarm activates from an open or closedcontact.

Battery

Temperature HighThreshold

Battery Temperature High alarm is activated if the

battery temperature is above this value.

BatteryTemperature LowThreshold

Battery Temperature Low alarm is activated if thebattery temperature is below this value.

System OverloadType


System Overload

Recognition Period


System OverloadThreshold


AC High Threshold AC High alarm is activated if the ac voltage is abovethis value.

AC Low Threshold AC Low alarm is activated if the ac voltage is belowthis value.


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Battery ChargeOver CurrentThreshold

Battery Charge Over Current alarm is activated if thebattery charge current is above this percentage of thebattery capacity or 2A, which ever is greater.


AuxiliaryTemperature Low

Threshold*

Auxiliary Temperature Low alarm is activated if theauxiliary temperature is below this value.

AuxiliaryTemperature LowHysteresis*

The hysteresis that is applied before the alarmdeactivates.

AuxiliaryTemperature HighThreshold*

Auxiliary Temperature High alarm is activated if theauxiliary temperature is above this value.

AuxiliaryTemperature HighHysteresis*

The hysteresis that is applied before the alarmdeactivates.

In Discharge Alarm

Condition

Set to indicate when In Discharge alarm will activate -

Always or Only While AC Present.In Discharge AlarmThreshold

In Discharge alarm is activated if the battery current isabove this percentage of the battery capacity.

* See Auxiliary Temperature Disconnect on page31.

System Overload Alarm

The System Overload alarm activates if the total system load exceeds a percentage of theinstalled rectifier capacity for a specified period. This indicates that additional rectifiers need to

be installed. This is useful at sites where there is ongoing installation of additional loadequipment.

To enable System Overload

In DCTools go to:Alarms >Alarm States. Enable and configure System Overload alarm. SeeSystem Alarm Configuration on page34.

Go to:Alarms >Alarm Configuration. Configure the System Overload alarm parameters. Seedetails on page36.

Information

The following information is available about System Overload.


System Power The output power of the system as a percentageof the total nominal power the system is capableof supplying.

SC100: Analogs

DCTools: Analog Inputs


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Configuration



System Overloadalarm parameters

See System Alarm Configuration on page34. DCTools: Alarms > AlarmStates

System OverloadThreshold The System Overload alarm activates if the loadis above this threshold continuously for theSystem Overload Recognition Period. Measured as apercentage of total rectifier capacity.


System OverloadRecognition Period

The System Overload alarm activates if the loadis above the threshold continuously for this time.It is normally set to several hours so that thealarm does not operate during a normal batteryrecharge.

System OverloadType

The System Overload alarm can be based oneither Total Capacity or Redundancy.

If the system overload type is based on TotalCapacity then the alarm will trigger when theload is above the System Overload Threshold forthe System Overload Recognition Period.

If the system overload type is Redundancy thenthe alarm will trigger when the load is above thetotal current capacity of the system minus thecurrent capacity of the largest rectifier, for theSystem Overload Recognition Period.

An alarm will always activate if thesystem overload type is set toRedundancy when there is only onerectifier installed.

Batteries

The following information is available about the batteries connected to the dc power system.


Battery ChargeState

Charge - the battery current is abovethe Battery State Threshold.

Discharge - the battery current is below-1 * Battery State Threshold.

Floating - the battery current is between

Battery State Threshold.

Unavailable - the battery current is notavailable.

See SC100 or DCTools displays ???or N/A on page57.

DCTools: Batteries

BatteryTemperature

The temperature measured by the batterytemperature sensor.

Ah Discharged The current level of battery discharge.

See also Reset Battery State on page20.


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Batteries Configuration

The following battery parameters must be configured.


Cells Per String The number of 2V cells per battery string (for example:24 in a 48V nominal system).

DCTools: Batteries

Battery Capacity Set to the rated 10 hour capacity of the installed batterystrings.

Battery StateThreshold

Used to determine the Battery Charge State. See BatteryCharge State on page36.


Battery Time Remaining

The SC100 obtains characterization data from periodic battery discharges, to a specified endvoltage.

During a battery discharge, the SC100 uses this characterization data to calculate an estimated

time until the battery will reach the specified end voltage. If a battery disconnect LVD is fitted then the end voltage will usually be the voltage at which the

LVD disconnects the battery.

Battery Time Remaining is designed for a constant power load. The accuracy of the timeremaining calculation will be reduced if the dc power system is connected to a predominantlyresistive (constant current) load.

The time remaining calculation will not be correct if a non-essential load is disconnected duringthe battery discharge.

The following information is available about Battery Time Remaining.


Battery TimeRemaining*

During a battery discharge, this is the estimated timeuntil the battery voltage will be equal to the EndVoltage, at the present battery current. Time Remainingwill be re-calculated if the load current varies duringdischarge (for example, when a load disconnect LVDoperates).

SC100: Menu > Controls >Batt Time Remaining

DCTools: Batteries

Estimated State ofCharge (SOC)*

The estimated charge left in the battery (Ah).

*Values of Battery Time Remaining and SOC are only available during a discharge and if thebattery has been characterized. The values will be N/A when the Battery Charge State is

Floating or Charge, or if the battery has not been characterized. See Battery Characterizationon page37.

Battery Characterization

Battery Characterization is a controlled battery discharge that provides data for the SC100 toestimate the Battery Time Remaining during any subsequent battery discharge. The data isdisplayed in the Battery Characterization Table.


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Information

The following information is available about Battery Characterization.


State Locked Out: A characterization cannot start. See LockOut Remaining (below).

Inoperative: Battery characterization data is not

loaded, End Voltage is below the characterization endpoint, or the bus voltage or battery current isunavailable.

Inactive:Battery Charge State is Floating or Charge .

See Battery Charge State on page36.Active: The battery is being characterized.

DCTools: Control Process >Battery Characterization

MaximumRemaining Time

The maximum time to the end of the currently activeBattery Characterization.

This value is not available for the initialcharacterization.

Lockout Remaining The time remaining until a Battery Characterization canbe started (after the last ac power fail). Set by theLockout period.

Count Down The time to the start of the next scheduled BatteryCharacterization.

This value is N/A when a characterization is inprogress or Battery Characterization isDisbaled.

Offset Voltage The adjustment to the bus voltage being applied due tothe Battery Characterization. While a BatteryCharacterization is running, the rectifiers are turneddown to force the battery to carry the load.

Initial Characterization

Use the following procedure to characterize a battery for the first time.

This will provide the most accurate characterization data. However, if the characterization datafrom a battery of the same size and type is available, then this can be added to the BatteryCharacterization Table manually. The following characterization is then not required.

It will take at least 10 hours to characterize a battery.

During a Battery Characterization the bus voltage will gradually reduce to the battery endvoltage. Ensure that this will not affect the operation of any equipment connected to the dcpower system.

1 Check that all battery strings are connected and any LVD contactors are connected.

During a battery characterization, LVD contactor disconnection is inhibited. If any LVDcontactor is configured to connect during a battery discharge then set it to Manual Connect toprevent operation during the battery characterization.


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2 Check that all battery strings are fully charged.

When a battery is fully charged, the Battery Charge State will be Float and Ah Dischargedwill be zero. See Batteries on page36.

3 Check that all battery parameters are set to the correct values. See Batteries Configurationon page37.

4 Check that the load current is at least 2% of the C10 capacity of the batteries (Battery

Capacity) and 150% of the Battery State Threshold. See Batteries Configuration on page37. If the load current is less than 10% of the C10 capacity of the batteries, then Battery

Characterization will take longer than 10 hours.

5 In DCTools go to: Control Processes > Battery Characterization. Set the following parameters:

Battery CharacterizationEnable: Enabled

End Voltage: Set to the voltage per cell when the battery is regardedas fully discharged.

In general, use the same value as for the LVD DisconnectVoltage (see LVD Configuration on page29). End Voltage

must be at least 0.02V/Cell above theMinimum SystemVoltage per cell.

The Minimum System Voltage is viewable in DCToolsat Control Processes > Voltage Control. It is notconfigurable.

1 Enable Battery Current Limit (see details on page15).

2 Click Battery Characterize Start to start a characterization. A Characterizing Battery alarm andan In Discharge alarm will be displayed. TheMaximum Remaining Time field will show theapproximate time to the end of the characterization (initially the value will be N/A).

If the "Battery Characterize Start" button is inactive in DCTools, then check allconfiguration settings. The hover text will indicate why the characterization cannot start.

The characterization process will take approximately 10 hours, depending on the load currentand battery condition. During characterization the rectifier output voltage is varied tomaintain a constant power discharge.

3 When the characterization has finished successfully:

the Characterization state will change to Enabled (But Battery Not Charged)

the Battery Characterization Table will show the characterization data (percentagecapacity against cell voltage).

the rectifiers will return to float voltage and the battery will start to recharge. Ifrequired, start a manual Equalize (see details on page18) to reduce the battery rechargetime.

If the characterization was not successful a Battery Characterization Fail or a BatteryCharacterization Error alarm will be active. See Alarm Descriptions on page63.

4 Restore any changed LVD operation back to the original settings. If no longer required,disable Battery Current Limit.

During any subsequent battery discharge the SC100 will display an estimate of the Battery TimeRemaining and the State of Charge (SOC). See Battery Time Remaining on page37.


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SC100 Handboo k


IPN 997-00012-63C August 2011

Scheduled Battery Characterization

Use the following procedure to schedule regular Battery Characterization discharges.

Each Battery Characterization discharge will update the characterization data and ensure theBattery Time Remaining value is as accurate as possible.

1 Check that all battery parameters are set to the correct values. See Batteries Configuration

on page37.2 Enable Battery Current Limit (see details on page15).

3 Check that the load current is at least 2% of the C10 capacity of the batteries (BatteryCapacity) and 150% of the Battery State Threshold. See Batteries Configuration on page37.

If the load current is less than 10% of the C10 capacity of the batteries, then BatteryCharacterization will take longer than 10 hours.

4 In DCTools go to: Control Processes > Battery Characterization. Set the following parameters:

Battery CharacterizationEnable: Enabled

End Voltage: Set to the voltage per cell when the battery is regarded

as fully discharged.In general, use the same value as for the LVD DisconnectVoltage (see LVD Configuration on page29). End Voltagemust be at least 0.02V/Cell above theMinimum SystemVoltage per cell.

The Minimum System Voltage is viewable in DCToolsat Control Processes > Voltage Control. It is notconfigurable.

Interval: Set to the required interval between scheduledcharacterizations (at least 90 days to avoid excessivebattery cycling). Or, set to zero if only manual

characterizations are required.Lockout: Set to the period when a characterization will be

inhibited, after an ac supply failure.

During any subsequent battery discharge the SC100 will display an estimate of the Battery TimeRemaining and the State of Charge (SOC). See Battery Time Remaining on page37.

Inpu t/Outpu t (I/O)

The following section describes the I/O functions available with a single IOBGP I/O board.

Additional SiteSure-3G input/output (I/O) modules or IOBGP I/O boards cannot be connected tothe SC100.


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System Operation


IPN 997-00012-63C August 2011 41

Analog System Values

The SC100 provides the following system analog values.


Bus Voltage The system bus voltage from the bus voltage sensor. Ifthe bus voltage sensor has failed, the system busvoltage is determined from the rectifier outputvoltages.

SC100: Status Menu


Load Current The total current drawn by all loads. The controlleruses the sum of any current inputs mapped as loadshunts. If no input is mapped and a battery current isavailable, the load current is calculated as RectifierCurrent - Battery Current, otherwise it is unavailable.

Battery Current The total current flowing to/from the batteries. Thecontroller uses the sum of any current inputs mappedas battery shunts. If no input is mapped and a loadcurrent is available, the battery current is calculated asRectifier Current - Load Current, otherwise it isunavailable. If positive, the battery is being charged.

BatteryTemperature

The temperature measured by the battery temperaturesensor.

AuxiliaryTemperature

The temperature measured by the auxiliarytemperature sensor (if connected).

Rectifier Current The total current output by all rectifiers. The controller

uses the sum of any current inputs mapped as rectifiershunts. If there are no rectifier shunts but there arebattery and load shunts, the rectifier current iscalculated as Battery Current + Load Current. Otherwisethe Sum of Reported Rectifier Currents is displayed.

Load Power The output power of the system.

System Power The output power of the system as a percentage of thetotal nominal power of the available rectifiers (does notinclude any shutdown rectifiers).

AC Voltage The average of the ac voltage measured by allrectifiers.

Phase 1/2/3 The average of the ac voltage measured by therectifiers allocated to each phase. See AC PhaseVoltages on page27.

Sum of ReportedRectifier Currents

The sum of the output currents reported by allregistered rectifiers.



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SC100 Handboo k

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