prpi-048 d20 d25 ibox automation applications

8/10/2019 PRPI-048 D20 D25 IBOX Automation Applications

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D20, D25, iBOX Automation ApplicationsProduct Information GE Energy

NOTICE OF COPYRIGHT & PROPRIETARY RIGHTS

2005, General Electric Canada. All rights reserved.

The contents of this manual are the property of General Electric Canada. No part of this work may

be reproduced or transmitted in any form or by any means, except as permitted in written license

agreement with General Electric Canada. The information contained in this document is subject to

change without notice.

Any attached hardware schematics and technical descriptions, or software listings that disclose

source code, are for information purposes only. Reproduction in whole or in part to create working

hardware or software for other than General Electric Canada products is strictly prohibited, except

as permitted by written license agreement with General Electric Canada.

TRADEMARK NOTICES

GE andgare trademarks and service marks of General Electric Company.WESDAC is a registered trademark of General Electric Company, General Electric Canada. All

other brand and product names mentioned in this document are trademarks or registered

trademarks of their respective companies.

PRPI-048-1.00-0 General

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D20, D25, iBOX Automation ApplicationsProduct Information

Contents

Additional Documentation ............................................................................................... 1

Overview 3

1. 1. User Programmable Logic ....................................................................................... 5

1.1 Calculator DTA, A083-0 ................................................................................................ 51.2 LogicLinx DTA, B082-0 ................................................................................................ 6

2. Generation, Transmission, and Feeder Bay Automation Applications ................... 7

2.1 Automatic Voltage Control DTA, A132-0 ..................................................................... 72.2 D25 Breaker Failure Protection DTA, B091-0 ............................................................... 8

2.3 D25 Definite Time Protection DTA, B090-0 ................................................................. 9

2.4 D25 Synchronism DTA, B093-0 .................................................................................... 92.5 Local / Remote DTA, A093-0 ...................................................................................... 10

2.6 Secondary Master Trip/Close DTA, A161-0 ................................................................ 10

2.7 Setpoint Adjustment DTA, A043 ................................................................................. 11

2.8 Tap Position Indication DTA, A064............................................................................. 11

3. Distribution Automation Applications...................................................................... 13

3.1 Auto Reclose DTA, A096-0 ......................................................................................... 133.2 Automatic Restoration DTA, A096-0........................................................................... 14

3.3 Distribution Capacitor Control Algorithm DTA, E001-0............................................. 14

3.4 Fault Localization DTA, E023-0 .................................................................................. 15

3.5 Load and Dead Bus Transfer DTA, E025-0 ................................................................. 153.6 Load Shedding/Curtailment DTA, A196-0................................................................... 16

General PRPI-048-1.00-0

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4. Advanced AC Monitoring Applications.................................................................... 17

4.1 D25 AC Analog Alarm DTA, B088-0.......................................................................... 17

4.2 D25 AC Data Profiling DTA, B087-0 .......................................................................... 18

4.3 D25 AC Statistical Data DTA, B095-0......................................................................... 184.4 D25 Digital Fault Recording DTA , B063-0 ................................................................ 19

4.5 D25 Power Quality DTA, B066-0 ................................................................................ 19

4.6 D25 Supplementary AC Data DTA, B075-0 ................................................................ 204.7 D25 Thermal Demand Metering DTA, B092-0............................................................ 20

5. Communication Services Applications ..................................................................... 21

5.1 Communication Watchdog DTA, A026-1.................................................................... 215.2 Substation Maintenance DTA, A088-0......................................................................... 22

5.3 Virtual Terminal DTA, A155-0 .................................................................................... 22

5.4 Line Switch DTA, A183-0............................................................................................ 235.5 LAN Services DTA, A151-A ....................................................................................... 24

5.6 COM Statistics DTA, A202-0 ...................................................................................... 245.7 IRIG B Source DTA, B048-0 ....................................................................................... 25

5.8 Data Display DTA, B062-0 .......................................................................................... 255.9 SNTP Client DTA, B099-0........................................................................................... 26

6. Data Logging / Storage Applications......................................................................... 27

6.1 SOE Local Logger DTA, A027 .................................................................................... 27

6.2 Accumulator Freeze DTA, A030.................................................................................. 28

6.3 Event Storage DTA, A072............................................................................................ 28

6.4 Historical Analog DTA, A129-0................................................................................... 29

7. Data Reduction and Summarizing Applications...................................................... 31

7.1 Analog Reference DTA, A035 ..................................................................................... 317.2 Data Change Detect DTA, A106 .................................................................................. 32

7.3 Alarm Prioritization DTA, A134-0............................................................................... 327.4 Analog Averaging DTA, A169-0 ................................................................................. 33

7.5 Analog Alarm DTA, A170-0 ........................................................................................ 33

7.6 General Alarm DTA, A184-0 ....................................................................................... 34

7.7 Top of Hour (TOH) Analog Averaging DTA, A193-0................................................. 347.8 Redundant I/O DTA, A195-0 ....................................................................................... 35

8. Data Conversion Applications ................................................................................... 37

8.1 Digital-Analog Value Conversion DTA, A040-0......................................................... 37

8.2 Digital Setpoint DTA, A054......................................................................................... 38

8.3 Digital Input to Counter DTA, A069............................................................................ 38

8.4 BCD Setpoint DTA, A140-0......................................................................................... 398.5 Accumulator Delta to Analog DTA, A148-0................................................................ 39

8.6 Time Stamp DTA, A160-0 ........................................................................................... 40


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8.7 Analog to Digital Conversion DTA, A171-0................................................................ 40

8.8 Mailbox DTA, B009 ..................................................................................................... 41

9. Other DTAs ................................................................................................................. 43

9.1 AGA Gas Flow DTA, A089 ......................................................................................... 43


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Additional Documentation

The following detailed product documentation is available on request for most automation

applications:

Functional Specification

Configuration Guide


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Overview

An extensive line of embedded firmware automation applications is available for GEs D20, D25

and iBOX product lines. This document is intended to provide an overview of these automationapplications. More detailed information is available on request.


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1. 1. User Programmable Logic

1.1 Calculator DTA, A083-0

This convenient and flexible soft logic utility can perform applications such as substation level

interlocking, feeder interlocking, and converting digital inputs to control outputs for driving amap board.

Users can program the system to control analog inputs and outputs and digital inputs and

outputs based on the result of configured mathematical and logical expressions. Soft logic is

based on expressions using a references to system database points, constants, mathematicaloperators, comparison operators, logic operators, logic bit operators, sign operators and

expression delimiters. Real-time exception based processing ensures maximum performance.

Platform Supported

D20

D25

CPM

iBOX


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1.2 LogicLinx DTA, B082-0

The LogicLinx Target Executor provides IEC61131-3 compliant, user programmable soft logic

automation (PLC) functionality. The LogicLinx Executor is responsible for executing softlogic

programs written using the LogicLinx SoftLogic Editor, which is based on a PC.The editor and executor communicate over a direct serial or Ethernet link. The PC based editorfacilitates creating, editing, compiling, debugging, downloading and monitoring LogicLinx

SoftLogic programs. The executor is an embedded application loaded into the D20, D25 or

iBOX that performs all program execution independently of the editor.

LogicLinx programs are executed on a cyclic basis as defined by the executor configuration.

LogicLinx programs run concurrently with other embedded applications. LogicLinx programsand parameters are stored in battery-backed memory (NVRAM) so they can be restarted after a

system reset without having to download the program again.

Platform Supported

D20

D25

CPM

iBOX


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2. Generation, Transmission, andFeeder Bay Automation Applications

2.1 Automatic Voltage Control DTA, A132-0

Automatic voltage control provides a complete solution for monitoring and controlling busbars,

transformers, and tertiary reactors. This sophisticated application automatically monitors and

controls groups of transformers to maintain a steady LV voltage based on user-defined targetsand settings.

The automatic tap change control mechanism provides automatic load balancing across

connected transformers and predictive algorithms to determine LV tap effects before the tap

takes place! Busbar connections are continuously monitored for dynamic reaction to changes inswitching arrangements. Tertiary reactor connections are automatically monitored and

considered when predicting voltage changes due to LV transformer control whenever needed.

Platform Supported

D20

D25

CPM

iBOX


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2.2 D25 Breaker Failure Protection DTA, B091-0

The Breaker Failure Protection application acts as a back-up to standard protection sources. By

monitoring circuit current and the responses of protection sources it has been configured to

recognize, the application will take action when protection sources activate in response to a fault,but the fault does not clear.

When an over-current fault occurs on a feeder, the first line of defense is the overcurrent

protection relays. These relays detect the over current and trip the breaker(s) that supply the

feeder from the bus. In the case that the protection relays fail to trip the circuit breaker or the

circuit breaker itself malfunctions, the continued fault current can cause damage to the bus andother upstream devices. To guard against this scenario, this application is used to trip breakers

even further upstream to de-energize the entire bus. To ensure consistent reaction times to all

protection trip sources, all trip events generated by protection devices are to be generated at thesame time in the tripping process.

The BFP DTA implements the breaker failure protection logic described by the logic diagram

below.

Platform Supported

D20

D25

CPM

iBOX


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2.3 D25 Defin ite Time Protect ion DTA, B090-0

The D25 Definite Time Protection application allows circuits to be configured for overcurrent

protection, based on definite current levels and durations.

Overcurrent protection observes the current magnitude in an electrical circuit and sends controlsignals to field equipment when they exceed configured limits. The time delay between detectingan overcurrent condition and executing the control signal depends on the current magnitude. In

an inverse-time overcurrent protection scheme, the time delay relates to the current in a smooth

curve. Definite time overcurrent protection is a simpler scheme where the time delay relates to

current in a step curve.

Platform Supported

D20

D25

CPM

iBOX

2.4 D25 Synchronism DTA, B093-0

The D25 Synchronism application controls breaker closure based on voltage conditions on either

side of the breaker. The DTA monitors voltages on both the bus and line side of a breaker, andwhen conditions of phase difference, slip frequency and RMS voltage difference are within

configured limits, it closes the breaker.The DTA supports two modes of operation, Check Synchronizing and System Synchronizing.

The Check Synchronizing mode is used when the slip frequency is close to zero, and System

Synchronizing is used when the slip frequency is higher typically because one side of the breakerhas been separated from the network, and is running asynchronous to the network.

Platform Supported

D20

D25

CPM

iBOX


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2.5 Local / Remote DTA, A093-0

The Local Remote application provides custom local/remote enabling or disabling of substation

control relays at distributed sites. A master Local/Remote switch located within the Data

Concentrator RTU will control the enabling or disabling of the local/remote function at thedistributed sites.

When the master Local/Remote switch is in the Local mode position, the Data Concentrator

RTU and all distributed units will be switched to Local mode, hence disabling all control

functions at the Data Concentrator RTU and all distributed units.

When the master Local/Remote switch is in the Remote mode position, the Data ConcentratorRTU and all distributed units will be switched to Remote mode, hence enabling all control

functions to perform normally at the Data Concentrator RTU and all distributed units.

Platform Supported

D20

D25

CPM

iBOX

2.6 Secondary Master Trip/Close DTA, A161-0

The Secondary Master Trip/Close application translates control requests into conventionaltrip/close operations in conjunction with an additional control request to operate a secondaryMaster Trip or Close relay for added control security.

Platform Supported

D20

D25

CPM

iBOX


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2.7 Setpoint Adjustment DTA, A043

The Setpoint Adjustment applications used to vary the value of analog output setpoints. It

derives the output adjustment values for setpoints from the duration of digital outputs and the

value of analog inputs, which are measured values of the current setpoint. The digital outputs

themselves are usually sent to this DTA from the SCADA master station.

Platform Supported

D20

D25

CPM

iBOX

2.8 Tap Posit ion Indication DTA, A064

The Transformer Tap Position Indication application translates digital input values into analog

input values for monitoring tap positions, with the magnitude defined in a configurable table.

Platform Supported

D20

D25

CPM

iBOX


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3. Distribution Automation Applications

3.1 Auto Reclose DTA, A096-0

The Automatic Reclose DTA provides a flexible automatic reclose function.

The Automatic Reclose application can automatically reclose a tripped circuit breaker, allowingthe power system to recover from a momentary fault.

The Automatic Reclose DTA supports multiple automatic reclose functions. Each automatic

reclose function supports a configurable number of reclose attempts each with individually

configurable dead times and reclaim times. Each automatic reclose function also supportsmultiple trigger status inputs to indicate that the protection has operated and the automatic

reclose function should be initiated. The dead time is the time between the detection of thecircuit breaker trip and the automatic reclosing of the circuit breaker. The reclaim time is the

time following the circuit breaker being reclosed, during which time a further opening isconsidered to be part of the current reclose operation.

Platform Supported

D20

D25

CPM

iBOX


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3.2 Automatic Restoration DTA, A096-0

Ideal for large commercial or industrial facilities that rely on a constant power supply, our auto-

restoration scheme can reduce outages to less than a minute. This patented load transfer scheme

automatically locates and isolates faults on a feeder, qualifies the ability to restore load based onsubstation and feeder data then quickly restores power to unfaulted sections by supplying powerfrom another source. System operators are kept informed of switch operations. Auto-restoration

supports multiple seasons, modes of operation, circuit groups and complex feeder topologies.

Platform Supported

D20

D25

CPM

iBOX

3.3 Distribution Capacitor Control Algorithm DTA, E001-0

You can gain an effective 1MVAR of reactive support during peak loading periods on a given

distribution unit (transformer and feeders associated with that transformer) simply though the

more efficient use of already installed banks! Improve the control of your distribution capacitorsby coordinating capacitors based on the needs of the high side of the distribution substation

transformer. As the power factor of the system is improved, the total current flow will be

reduced and losses will be reduced. This permits additional load to be served by the samesystem. Holding the system closer to unity power factor also increases system stability. Typical

payback for this system is less than two years! In addition, the system automatically alarms forblown fuses on capacitor banks saving many utility worker-hours checking for blown fuses.

Platform Supported

D20

D25

CPM

iBOX


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3.4 Fault Localization DTA, E023-0

Locate and isolate faults in seconds not hours and greatly reduce customer outage times! The

Fault Localization application is a fully configurable software package that provides fault

detection, location and graphical animation information within a GE system. In a typical system,the Fault Localization application will query information retrieved from remote GE feeder IEDsconcerning fault detection to determine the state of a particular power distribution network. The

application maintains an updated state of the entire distribution network; this allows the

information to be accessed by a user through a graphical user interface to visually determine thecondition of the distribution network.

Platform Supported

D20

D25

CPM

iBOX

3.5 Load and Dead Bus Transfer DTA, E025-0

The Load and Dead Station Transfer application works to maintain system efficiency by

monitoring a network of substations and moving load off of overloaded transformers to otherstations in the electrical network as required. The application detects when a transformer reaches

a predetermined overload set point, then transfers load to stations that have unused capacity. The

application also automatically attempts to restore power to feeders that lose their primary supplystation. The operator can set the routine to confirm switching operations prior to execution or to

be in fully automatic mode. Load transfer is a proven way to postpone construction of new

substations by reducing the overload on existing stations.

Platform Supported

D20

D25

CPM

iBOX


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3.6 Load Shedding/Curtailment DTA, A196-0

The Load Shedding / Curtailment application controls feeder breakers based on the state of

digital input states (DI) and digital output (DO) requests related to zones/groups. The Load

Shedding / Curtailment DTA is responsible for sending only TRIP commands, to disconnectfeeders breakers. CLOSE commands can only be sent by the Master station, an operator throughWESMAINT or by some other special applications. Generally, a group/zone DI point is

connected to an under frequency relay, and a group/zone DO point is related to load control. It is

possible to reconfigure any feeder to different group/zone during runtime.

Platform Supported

D20

D25

CPM

iBOX


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4. Advanced AC MonitoringApplications

4.1 D25 AC Analog Alarm DTA, B088-0

The D25 AC Analog Alarm application is dedicated to monitoring AC analog values and

generating alarm indications as required by the alarm definitions. It monitors the AC analog

values and generates alarms in case any analog value exceeds certain limits. These alarms can beused as general indications that something requires attention, or they can be used to trigger other

functions such as digital fault recording or AC value profiling.

Platform SupportedD20

D25

CPM

iBOX


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4.2 D25 AC Data Prof il ing DTA, B087-0

The D25 AC Data Profiling application has the ability to capture selected AC and digital data

every power cycle for a specified period of time and to record that data in the COMTRADE

1991 file format (IEEE Std C37.111-1991) for uploading to another device. The AC data can beany of the analog input values reported by the DSP, and the digital data can be any digital inputavailable in the system database.

The AC Data Profiling DTA can capture values on up to 125 AC analog channels and 250 digital

channels for up to 5400 cycles (up to 1800 cycles pre-trigger and 3600 cycles post-trigger).

A recording of the AC Data Profiling is started, or triggered, by a change on a configured digitalinput. It is stopped either when the recording is done for the maximum configured number of

cycles, or by a change on a configured digital input.

Start and stop conditions of AC Data Profiling recording may also be requested by other

applications through pseudo-controls (digital outputs) defined for that purpose. These are called

manual starts and stops.

Platform Supported

D20

D25

CPM

iBOX

4.3 D25 AC Statist ical Data DTA, B095-0

The D25 AC Analog Statistical Data application captures AC data every power cycle and

provides the minimum, maximum and mean values for that data. It allows the user to enablestatistical data reporting on a number of selected AC values. The DTA reports the minimum,

maximum, and mean values for each selected value. The user can select the averaging interval

for each value, and can manually reset the minimum and maximum values.

Platform Supported

D20

D25

CPM

iBOX


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4.4 D25 Digital Fault Recording DTA , B063-0

The Digital Fault Recorder system based on the D25 and integrated Substation Control System is

an effective way to accurately record and analyze substation events while avoiding the excessive

added costs of standalone digital fault recorders. This scalable system can accommodate

virtually any number of analog or digital channels by employing peer-to-peer communications tocross-trigger a set of D25s. This allows you to collect a full set of data on the condition of your

network.

Through the PC-based DirectView and PowerLink workstation viewers, you can get a virtualsnapshot of the system at the time of the fault and trace the incident with dexterity. You can

clearly determine the order of events, and the performance and health of the breakers. The

DirectView tool makes it easy for you to zoom in on and compare event records. With thesecapabilities as well as on-line configuration, unique de-trigger functions and 240 cycles of

storage, you no longer need to travel to the site to carry out post-fault analysis.

Platform Supported

D20

D25

CPM

iBOX

4.5 D25 Power Quali ty DTA, B066-0

This application supports power quality monitoring and RMS profiling for up to 6 separate ACcircuits. It offers the ability to detect and report short-duration and extended-duration voltage

swells, sags, and interruptions and also record the RMS voltage profiles of those events if

desired. RMS profiling is triggerable for only one event at a time and the captured RMS profileis stored in COMTRADE files which can be uploaded to a host via a separate file transfer

facility. The parameters which define the swell, sag, and interruption events and the optional

enabling of RMS profiling of each event are configurable offline through Config Pro and during

run-time through the online configuration.

Platform Supported

D20D25

CPM

iBOX


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4.6 D25 Supplementary AC Data DTA, B075-0

The D25 Supplementary AC Data application calculates line-to-line voltages and phase angles

from line-to-neutral voltages and phase angles and calculates a neutral current and phase angle

from phase currents and angles. The voltage calculations are done for each separate circuit in a

3-element metering scenario only, while the neutral currents are calculated for all circuitconfigurations except for the 2-element metering. Additionally, voltages and currents are

calculated only for those circuits, which are enabled for these calculations through the SAD DTAconfiguration parameters. No calculations, whether for voltages or currents, are done in the 2-

element metering scenarios.

Platform Supported

D20

D25

CPMiBOX

4.7 D25 Thermal Demand Metering DTA, B092-0

Some utilities require the ability to record power demand by calculating the equivalent thermalstate of an electro-mechanical meter. The peak demand value so calculated also needs to be

recorded and must be capable of being reset through a number of mechanisms.

The D25 Thermal Demand Metering (TDM) application calculates the thermal demand state and

record peak demand values based on load currents. The TDM DTA calculates the thermaldemand state for all of its configured circuits at a fixed periodic interval. The thermal states are

recorded in analog input system points for retrieval by other applications. The peak thermal

demand for each circuit is recorded as well. Both are recorded in non-volatile RAM (NVRAM)so that the state can be recovered after a system reset. The user can manually reset both the

thermal state and the peak thermal demand.

Platform Supported

D20

D25

CPM

iBOX


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5. Communication ServicesApplications

5.1 Communication Watchdog DTA, A026-1

The Communication Watchdog monitors the state of communication between a GE system and

connected IEDs. When the GE system is attempting communication with the IEDs, the

Communication Watchdog can indicate whether the devices and/or individual points are on-lineor off-line. In a redundant system, the Communication Watchdog indicates which physical unit

active and shows the current readiness state of the secondary unit. All indications can be used to

raise alarms, if desired.

Platform Supported

D20

D25

CPM

iBOX


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5.2 Substation Maintenance DTA, A088-0

The Substation Maintenance application allows status and analog input values to be suppressed

for maintenance purposes.

The Substation Maintenance DTA can be configured to operate in a normal or a maintenancemode. Changing the state of a designated digital output point can change the mode in which theRTU is operating. Normal mode allows the system to operate normally, whereas maintenance

mode will allow service technicians to perform maintenance to the system while the Master

Station receives the desired data. The desired data will consist of either the last stored value or a

suppressed value. The digital inputs and analog inputs can therefore be monitored while theSubstation is in maintenance mode.

Platform Supported

D20

D25

CPM

iBOX

5.3 Virtual Terminal DTA, A155-0

The Virtual Terminal (VT) application provides a direct interface to Intelligent Electronic

Devices (IEDs) attached to a communication port. This access, called the virtual channel, may beestablished with any configured communication port.

With Virtual Terminal you gain access to your substation devices through the GE RTU to enableyou to program, monitor or retrieve data for any attached intelligent electronic device (IED)

through a single network connection just like you where plugged directly into the IED itself.

Platform Supported

D20

D25

CPM

iBOX


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5.4 Line Switch DTA, A183-0

The Line Switch DTA facilitates the use of two physical communication channels (a main and a

backup) where only one channel is normally supported by the end device. The application may

receive messages on a main or standby communication port and transmits the messages to a local

communication port. The Line Switch DTA provides the following functionality: Receive amessage on only one of the following communication channels at a time:

The Main communication line

The Standby communication line.

A response to the message is transmitted through one of the following sources:

On the same line in which the message was received.

On both the Main and Standby communication lines.

Switch between the Main communication line and the Standby communication line if any of the

following events occur:

A message has not been received on the active communication line for a configurable amount

of time

A Loss of Carrier is detected on the active communication channel

A control request has been received.

Platform Supported

D20

D25

CPM

iBOX


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5.5 LAN Services DTA, A151-A

When utilizing Ethernet communications the LAN Services application provides five separate

services for a Local Area Network (LAN):

Simple Point Transfer (SPT) Server, allows other RTUs to access binary and analoginputs of the RTUs database.

Simple Point Transfer (SPT) Client, reads other data from other RTUs (running as SPTServers) and stores it in the RTUs database.

Trivial File Transfer Protocol (TFTP) Server, allows other devices to read informationdirectly from the RTU tables (this includes configuration files and run time tables).

Time Server, makes the RTU time available to be read by other devices.

Time Client, sets the RTU time by reading time from a time server.

Platform Supported

D20

D25

CPM

iBOX

5.6 COM Statist ics DTA, A202-0

The COM Statistics application collects statistical information about the communication ports.

The COM Statistics DTA provides the following communication statistics via counters for aconfigured monitored communication port: framing errors, parity errors, overflow errors,

number of breaks detected, RX and TX timeouts, and a summary of all previous mentioned

errors with the exception of TX timeouts.

A custom WESMAINT screen provides the above-mentioned statistics and information on allmonitored communication ports.

Platform Supported

D20

D25

CPM

iBOX


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5.7 IRIG B Source DTA, B048-0

The IRIG-B Source Data Translation Application (DTA) is a software application, which

generates pulses based on the IRIG Format B standard. The IRIG-B output pulse can then beused to time synchronize other devices through a configured communication port.

Platform Supported

D20

D25

CPM

iBOX

5.8 Data Display DTA, B062-0

The Data Display application is used to distribute remote Data Display Panels from a single, or

multiple, communication port(s) and to display analog input and binary input information.

Platform Supported

D20

D25

CPM

iBOX


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5.9 SNTP Client DTA, B099-0

The Simple Network Time Protocol (SNTP) Client provides a mechanism for accurate and

reliable time synchronization of an iSCS system clock with a designated SNTP or NTP time

server accessible over an Internet Protocol network.

Platform Supported

D20

D25

CPM

iBOX


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6. Data Logging / Storage Applications

6.1 SOE Local Logger DTA, A027

The Sequence-of-Events Logger application logs Sequence of Events (SOEs) from any sub-set of

the system digital input and/or analog input points. The SOE logger DTA can operate in threemain modes:

Send digital and/or analog SOEs as ASCII data to a communication port.

Send information to a printer using either STX/ETX or no software handshaking.

Save the digital and/or analog SOEs in a standard spreadsheet file format

(A027_SOE.CSV) in the RTU NVRAM.

Each digital and/or analog SOE is placed on a single line. The data may be configured in anyorder (i.e. date, descriptor, time, point state, user description, point number, record number).

Also, the time of SOE Event can be offset through a user configurable parameter called Local

Time Offset, which is used to adjust the time of the Digital and Analog SOEs.

Platform Supported

D20

D25

CPM

iBOX


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6.2 Accumulator Freeze DTA, A030

Freeze accumulators when a status input changes state and/or automatically on a configured time

interval. An optional control output can be operated to externally indicate the accumulators have

been frozen.

Platform Supported

D20

D25

CPM

iBOX

6.3 Event Storage DTA, A072

Store up to seven days of events in the Non-Volatile Memory (NVRAM) for access by other

applications. Accumulator and analog point values can be queried and stored on a configurable

time interval. Data is time and date stamped, as it is stored.

Platform Supported

D20

D25

CPM

iBOX


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6.4 Historical Analog DTA, A129-0

The Historical Analog application provides the ability to sample up to eight analog input values

from the RTUs database and calculate average values for each. The calculated averages, along

with timestamp information, can then be read by other applications.

Platform Supported

D20

D25

CPM

iBOX


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GE Energy


7. Data Reduction and SummarizingApplications

7.1 Analog Reference DTA, A035

The Analog Reference application is a simple way to monitor the status of analog input field

devices. This application monitors analog input points that are connected to analog input

hardware, and provides the system database with pseudo analog values. These values representeither correctly functioning analog input hardware (good reference value), or failed analog input

hardware (bad reference value).

Platform Supported

D20

D25

CPM

iBOX


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7.2 Data Change Detect DTA, A106

The Data Change Detect application toggles a digital input point every time a value changes on

any point in a defined group of points. Each group can contain status, control, counter, analog

input, and analog output points.

Platform Supported

D20

D25

CPM

iBOX

7.3 Alarm Prior itization DTA, A134-0

The Alarm Prioritization application is used in a GE system consisting of GE DARTs as part ofits sub-system. The purpose of the DTA is to monitor the three levels of fault circuit indicator

alarms generated by the WESDAC DART. The processing of these alarms is based on a scheme

of alarm level blocking and report prioritization.

Platform Supported

D20

D25

CPM

iBOX


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7.4 Analog Averaging DTA, A169-0

The Analog Averaging DTA calculates and reports the average value of analog inputs. The

averaging period is configurable on a per analog input point basis.

Platform Supported

D20

D25

CPM

iBOX

7.5 Analog Alarm DTA, A170-0

The Analog Alarm application monitors analog input points that act as threshold alarms. Eachalarm is asserted or cleared, depending on several conditions. In particular the threshold alarm is

asserted when the monitored analog input crosses the alarm threshold and has not crossed back

over the hysteresis threshold before the qualification time expires. The threshold alarm is clearedwhen the analog input goes below the configured hysteresis threshold. This DTA will report the

value of the analog input and the time at which it went into and out of alarm as well as the

extreme value recorded while the analog input was in alarm and the time of the extreme.

Platform Supported

D20

D25

CPM

iBOX


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7.6 General Alarm DTA, A184-0

The General Alarm application allows logic grouping of individual digital inputs to generate the

states of General Alarms based on the states of those grouped individual digital inputs. The state

of the General Alarm is determined by a configurable threshold value. The threshold value is the

number of associated digital inputs that must be in their alarm states for an alarm to be raised onthe General Alarm. The General Alarms can be configured as either latching or non-latching.

Each General Alarm has an associated digital output point that is used to acknowledge theGeneral Alarm, when it is in the alarm state.

Platform Supported

D20

D25

CPM

iBOX

7.7 Top of Hour (TOH) Analog Averaging DTA, A193-0

The Top of Hour (TOH) Analog Averaging application is similar to A169 Analog AveragingDTA. The advantage of this application is that the averaging periods are relative to the top of the

hour. IE. if you pick 20 minute averaging it averages at 1:00, 1:20, 1:40, 2:00, etc. A169 does

not average relative to the top of the hour.

Platform Supported

D20

D25

CPM

iBOX


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7.8 Redundant I/O DTA, A195-0

The Redundant I/O application provides I/O point redundancy data processing based on the state

of primary and backup I/O if so equipped on the RTU. The Redundant I/O DTA is responsible

for providing automatic switching from Primary to Backup when the Primary points are invalidand will automatically switch from Backup to Primary when the Primary points are valid

The Redundant I/O DTA performs I/O point redundancy by maintaining a database of I/O points

that reflects the current states of either the Primary I/O points or the Backup I/O points

(depending which set is valid). This DTA will redirect control requests (Digital Output request

and Analog Output request) to the associated mapped control point.

Platform Supported

D20

D25

CPM

iBOX


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8. Data Conversion Applications

8.1 Digital-Analog Value Convers ion DTA, A040-0

The Digital to Analog Value Conversion DTA allows configured groups of digital inputs to be

translated to analog values via various conversion methods. The conversion methods supportedare: standard binary value, standard binary coded decimal (BCD) value, gray coded value,

reflected gray coded BCD value, and reflected petheric coded BCD value.

Each of the conversion methods allows for uni-polar or bi-polar conversion and strobing. Strobe

refers to a specific digital input, which is not part of the actual value for conversion, but qualifieswhen the value specific digital inputs are in a valid state for conversion (i.e.: conversion is only

allowed when the strobe input is in a specified state).

For coded inputs, which do not have a strobe point associated with them, a debounce period may

be configured in order to avoid spurious conversions while a value change is in progress. A newresultant analog value will only be calculated when all associated input points have been stable

for the debounce period.

Platform Supported

D20

D25

CPM

iBOX


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8.2 Digital Setpoint DTA, A054

The Digital Setpoint application translates analog output requests from a master station into

groups of digital outputs in BCD format.

Platform Supported

D20

D25

CPM

iBOX

8.3 Digital Input to Counter DTA, A069

The Digital Input to Counter application counts the number of digital input transitions and storesthem in a counter. The application can be configured to process SOE or COS events (NOT both)

on a point by point basis for all of the points configured.

Platform Supported

D20

D25

CPM

iBOX


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8.4 BCD Setpoint DTA, A140-0

The BCD Setpoint DTA is used to convert an analog setpoint value to its equivalent BCD value.

The converted BCD value is then used to operate a series of digital outputs that represent the

BCD value in either latched or pulsed mode.

Platform Supported

D20

D25

CPM

iBOX

8.5 Accumulator Delta to Analog DTA, A148-0

The Accumulator Delta to Analog application detects accumulator changes and writes them toanalog input points. These analog points are then available to other applications with in the

RTU.

Platform Supported

D20

D25

CPM

iBOX


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8.6 Time Stamp DTA, A160-0

The Timestamp application monitors analog input points where each bit within the analog value

contains status information from an external Intelligent Electronic Device (IED). When an

analog value changes, the changed bit(s) cause a status point Sequence of Events event (SOE) tobe generated.

Platform Supported

D20

D25

CPM

iBOX

8.7 Analog to Digital Convers ion DTA, A171-0

The A/D Conversion application monitors analog input point(s) and generates any changes to a

group of controls arranged in a configurable binary format. The conversion is done based on thestatus of a configurable digital input lockout point and analog input threshold.

Platform Supported

D20

D25

CPM

iBOX


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8.8 Mailbox DTA, B009

The Mailbox Data Translation Application (DTA) provides special Output to Input Mailbox

processing which allows communication between master stations. Analog or digital outputs sent

from one master station are translated into analog or digital inputs that can then be read by othermaster stations.

Mailbox DTA can perform the following data translations:

Binary Output to Binary Input

Analog Output to Binary Input

Analog Output to Counter

Analog Output to Analog Input

Platform Supported

D20

D25

CPM

iBOX


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9. Other DTAs

9.1 AGA Gas Flow DTA, A089

The AGA Gas Flow DTA provides gas flow rate calculations and energy flow rate calculations.

Platform Supported

D20

D25

CPM

iBOX

prpi-048 d20 d25 ibox automation applications

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