100% found this document useful (1 vote)

555 views338 pages

GEH-6729H Vol2

Uploaded by

Jorge Contreras

We take content rights seriously. If you suspect this is your content, claim it here.

Available Formats

Download as PDF, TXT or read online on Scribd

100% found this document useful (1 vote)

555 views338 pages

GEH-6729H Vol2

Uploaded by

Jorge Contreras

We take content rights seriously. If you suspect this is your content, claim it here.

Available Formats

Download as PDF, TXT or read online on Scribd

You are on page 1/ 338

GE Energy GEH-6729H

Mark* Ve Control, Volume II

Application Guide
These instructions do not purport to cover all details or variations in equipment, nor to provide for every possible contingency
to be met during installation, operation, and maintenance. The information is supplied for informational purposes only, and
GE makes no warranty as to the accuracy of the information included herein. Changes, modifications, and/or improvements to
equipment and specifications are made periodically and these changes may or may not be reflected herein. It is understood
that GE may make changes, modifications, or improvements to the equipment referenced herein or to the document itself at
any time. This document is intended for trained personnel familiar with the GE products referenced herein.

GE may have patents or pending patent applications covering subject matter in this document. The furnishing of this document
does not provide any license whatsoever to any of these patents.

This document contains proprietary information of General Electric Company, USA and is furnished to its customer solely to
assist that customer in the installation, testing, operation, and/or maintenance of the equipment described. This document
shall not be reproduced in whole or in part nor shall its contents be disclosed to any third party without the written approval of
GE Energy.

GE provides the following document and the information included therein as is and without warranty of any kind, expressed or
implied, including but not limited to any implied statutory warranty of merchantability or fitness for particular purpose.

If further assistance or technical information is desired, contact the nearest GE Sales or Service Office, or an authorized
GE Sales Representative.

© 2007 – 2010 General Electric Company, USA. All rights reserved.

Revised: 2010-11-03
Issued: 2007-05-18

* Trademark of General Electric Company

ARCNET is a registered trademark of Datapoint Corporation.
Bussmann is a registered trademark of Cooper Bussmann, Incorporated
CompactFlash is a registered trademark of SanDisk Corporation.
IEEE is a registred trademark of Institute of Electrical and Electronics Engineers.
Neutrino and QNX are registered trademarks of QNX Software Systems, LTD.
To:
Readers Comments GE Energy
Documentation Design, Rm. 297
1501 Roanoke Blvd.
Salem, VA 24153–6492 USA
Fax: 1–540–387–8651
(GE Internal DC *278–8651)

We welcome comments and suggestions to make this publication more useful.

Your Name Today’s Date If needed, how can we contact
you?
Your Company’s Name and Address Job Site Fax No ........................................
Phone No ...................................
GE Requisition No. E-mail .........................................

Your Job Function / How You Use This Publication Publication No. Address
Publication Issue/Revision
Date

General Rating

Excellent Good Fair Poor Additional Comments

Contents ...............................................
Organization ...............................................
Technical Accuracy ...............................................
Clarity ...............................................
Completeness ...............................................
Drawings / Figures ...............................................
Tables ...............................................
Referencing ...............................................
Readability ...............................................

Specific Suggestions (Corrections, information that could be expanded on, and such.)
Page No. Comments
............................................................................................. ..................................................................................................
............................................................................................. ..................................................................................................
............................................................................................. ..................................................................................................
............................................................................................. ..................................................................................................
.............................................................................................. ..................................................................................................
.............................................................................................. ..................................................................................................

Other Comments (What you like, what could be added, how to improve, and such) .....................................................................

.....................................................................................................................................................................................................
.....................................................................................................................................................................................................
......................................................................................................................................................................................................
......................................................................................................................................................................................................
......................................................................................................................................................................................................
......................................................................................................................................................................................................

Overall grade (Compared to publications from other manufacturers of similar products, how do you rate this publication?)

Superior Comparable Inferior Do not know Comments .............................................

Detach and fax or mail.
....................................................................Fold here and close with staple or tape....................................................................

Place
stamp
_______________________
here
_______________________
_______________________

GE Energy
Documentation Design, Rm. 297
1501 Roanoke Blvd.
Salem, VA 24153–6492 USA

........................................................................................Fold here first........................................................................................

Safety Symbol Legend

Indicates a procedure, condition, or statement that, if not

strictly observed, could result in personal injury or death.

Warning

Indicates a procedure, condition, or statement that,

if not strictly observed, could result in damage to or
destruction of equipment.
Caution

Indicates a procedure, condition, or statement that

should be strictly followed in order to optimize these
applications.
Attention

Note Indicates an essential or important procedure, condition, or statement.

Tip Ä Provides essential information that is not normally defined in regular use but
from an experienced user.

A margin note is used to

emphasize a specific statement
or provide a reference.
To prevent personal injury or damage to equipment,
follow all GE safety procedures, LOTO, and site safety
procedures as indicated by EHS.
Warning

This equipment contains a potential hazard of electric

shock, burn, or death. Only personnel who are
adequately trained and thoroughly familiar with the
equipment and the instructions should install, operate,
or maintain this equipment.
Warning

Isolation of test equipment from the equipment under

test presents potential electrical hazards. If the test
equipment cannot be grounded to the equipment under
test, the test equipment’s case must be shielded to prevent
contact by personnel.

To minimize hazard of electrical shock or burn, approved

Warning grounding practices and procedures must be strictly
followed.

To prevent personal injury or equipment damage caused

by equipment malfunction, only adequately trained
personnel should modify any programmable machine.
Warning

Always ensure that applicable standards and regulations

are followed and only properly certified equipment is
used as a critical component of a safety system. Never
assume that the HMI or the operator will close a safety
critical control loop.
Warning
Contents
PIOA I/O Interface Module .................................................................................................... 1-1
IONet and ARCNET® Interface (PIOA) ...........................................................................................1-1
PIOA Specific Alarms ....................................................................................................................1-29
Common Module Alarms...............................................................................................................1-66
JPDV Terminal Board ....................................................................................................................1-67
PMVE Mark Ve Control I/O Module ....................................................................................... 2-1
Mark VIe Control I/O Communication (PMVE) ................................................................................2-1
PMVE Specific Alarms ..................................................................................................................2-14
Common Module Alarms...............................................................................................................2-38
MVRA I/O Interface Board.............................................................................................................2-39
MVRB I/O Interface Board.............................................................................................................2-78
MVRC I/O Interface Board ............................................................................................................2-94
MVRF I/O Interface Board...........................................................................................................2-104
HSLA Interface ............................................................................................................................2-131
Common Module Content...................................................................................................... 3-1
Auto-Reconfiguration.......................................................................................................................3-1
Hardware Jumpers ..........................................................................................................................3-2
Common Module Alarms.................................................................................................................3-4
Signal Flow Diagrams ............................................................................................................ 4-1
Reference........................................................................................................................................4-1
Signal Flow Diagrams ...................................................................................................................4-10
Power Distribution Diagrams ............................................................................................... 5-1
Overview .........................................................................................................................................5-1
Power Distribution Core <PD> Diagrams........................................................................................5-3
Replacement and Ordering.................................................................................................... 6-1
Replacement ...................................................................................................................................6-1
Ordering a Board.............................................................................................................................6-4

GEH-6729H Contents 1
Notes

2 Contents Mark* Ve Control, Volume II

PIOA I/O Interface Module

IONet and ARCNET® Interface (PIOA)

Functional Description
The IONet ARCNET (PIOA) I/O pack provides an interface between the newer Mark* Ve
control Ethernet IONet and the existing Mark V control RS-485 IONet or the excitation
control ARCNET. The PIOA provides an interfaces to the I/O boards TCDA and TCEA.
The I/O pack mounts to the JPDV terminal board through a 37-pin connector. The LAN
connections (IONet and ARCNET) are made to the JPDV.

System input to the I/O pack is through dual RJ-45 Ethernet connectors and a 3-pin power
input. Visual diagnostics are provided through indicator LEDs. There is a separate IONet
PIOA for each core (R, S, T, and C), if the system is TMR. Excitation control ARCNET
adds a single PIOA to <C> core for simplex applications or a single PIOA to <R> and
<C> cores for redundant applications.

Infrared port not used

Two PIOA Packs on a JPDV Board in a Mark Ve Core

GEH-6729H PIOA I/O Interface Module Application Guide 1-1

Installation
The PIOA I/O pack only mounts to the JPDV terminal board. JPDV has two DC-37
pin connectors labeled JA1 and JB1. If the interface is an ARCNET interface to the
excitation control, the PIOA mounts to the JA1 connector. If the interface is an RS-485
IONet interface to the Mark V TCDA and TCEA I/O boards, the PIOA mounts to the
JB1 connector.

Ø To install the PIOA I/O pack

1. Securely mount the JPDV terminal board to the front core board holder.
2. Plug the PIOA I/O pack into the correct terminal board connector (JA1 or JB1).
Plug the pack into JA1 for an ARCNET excitation control interface. Plug the pack
into JB1 for a RS-485 IONet interface.
3. Mechanically secure the packs using the threaded studs adjacent to the Ethernet ports.
The studs slide into a mounting bracket specific to the terminal board type. The
bracket location should be adjusted such that there is no right-angle force applied to
the DC-37 pin connector between the pack and the terminal board. The adjustment
should only be required once in the life of the product.
4. Plug in one or two Ethernet cables depending on the system configuration. The pack
will operate over either port. If dual connections are used, the standard practice is to
connect ENET1 to the network associated with the R controller.
5. Apply power to the pack by plugging in the connector on the side of the pack. It is
not necessary to insert this connector with the power removed from the cable as
the I/O pack has inherent soft-start capability that controls current inrush on power
application.
6. Configure the I/O pack as necessary.

If the configuration being downloaded contains I/O

packs with different module IDs than the configuration
currently running, the download may install incorrect
firmware to some I/O packs. If this occurs, make sure the
controller is running the new configuration, restart the
entire system, and then start the ToolboxST Download
Attention Wizard again.

1-2 Mark* Ve Control, Volume II

Operation

Processor
The processor board is common to the Ethernet I/O packs. It contains the following:

• High-speed processor with RAM and flash memory

• Two fully independent 10/100 Ethernet ports with connectors
• Hardware watchdog timer and reset circuit
• Internal temperature sensor
• Status-indication LEDs
• Electronic ID and the ability to read IDs on other boards
• Input power connector with soft start/current limiter
• Local power supplies, including sequencing and monitoring

The processor board connects to an acquisition board specific to the I/O pack or module
function. Upon application of input power, the soft-start circuit ramps up the voltage
available on the processor board. The local power supplies are sequenced on, and
the processor reset is removed. The processor completes self-test routines and then
loads application code specific to the I/O pack or module type from flash memory. The
application code reads board ID information to ensure the correct matching of application
code, acquisition board, and terminal board. With a good match, the processor attempts
to establish Ethernet communications, starting with request of a network address. The
address request uses the industry standard dynamic host configuration protocol (DHCP)
and the unique identification read from the terminal board. After Ethernet initialization,
the processor programs the on-board logic, runs the application, and enables the
acquisition board to begin operation.

The processor application code contains all the logic necessary to allow the I/O pack to
operate from one or two Ethernet inputs. When operated from two Ethernet inputs, both
network paths are active all the time. A failure of either network will not result in any
disturbance to the I/O pack or module operation, and the failure will be indicated through
the working network connection. This arrangement is more tolerant of faults than a classic
hot-backup system where the second port is only used after a primary port failure is
detected. The Ethernet ports on the processor auto-negotiate between 10 and 100 mbps
speed, and between half-duplex and full-duplex operation.

Auto-Reconfiguration
Refer to the Auto-Reconfiguration section in the Common Module Content chapter.

ID Line
The processor board and acquisition board within the I/O pack contain electronic ID parts
that are read during power initialization. A similar part located with each terminal board
DC-37 pin connector allows the processor to confirm correct matching of I/O pack to
terminal board and report board revision status to the system level control.

GEH-6729H PIOA I/O Interface Module Application Guide 1-3

Power Management
The I/O pack includes power management in the 28 V input circuit. The management
function provides soft start to control current inrush during power application. After
applying power, the circuit provides a fast current limit function to prevent an I/O pack or
terminal board failure from propagating back onto the 28 V power system. When power
is present and working properly, the green PWR indicator will light. If the current limit
function operates, the indicator will be out until the problem is cleared.

Connectors
The pack contains the following connectors:

• DC-37 pin connector on the underside of the I/O pack connects directly to the JPDV
terminal board. The connector contains the ID signal, DLAN+ (ARCNET) signals
and the RS-485 IONet signals
• RJ-45 Ethernet connector, ENET1 on the side of the pack is the primary system
interface
• Second RJ-45 Ethernet connector, ENET2 on the side of the pack is the redundant
or secondary system interface
• 3-pin power connector on the side of the pack is for 28 V dc power for the pack
and terminal board

Input/Output Signals
The I/O interface acquisition board (BIOA) has a UART to interface the processor to the
RS-485 IONet, an ARCNET controller chip to interface the processor to the excitation
control DLAN+ LAN, and a programmed complex programmable logic device (CPLD) to
provide the glue logic for the hardware interfaces. The serial communication LEDs (ARx,
ATx, Rx, Tx) are on the BIOA board, but driven by the processor.

Password Protection
If a password(s) was set in the General tab Property Editor for the ToolboxST component,
the following function requires a password.

Modify Data Modify Design

Add Module ✓ ✓

Note The first time you attempt a password-protected function, the Enter Password
dialog box displays. All protected functions performed during the remainder of the
ToolboxST session do not require re-entering the password.

1-4 Mark* Ve Control, Volume II

RS-485 IONet
Ø To add a PIOA module for RS-485 IONet support
1. From the Component Editor, click the Hardware tab.
2. From the Tree View, right-click the Distributed I/O item and select Add Module.
The Add Module Wizard dialog box displays.

GEH-6729H PIOA I/O Interface Module Application Guide 1-5

1-6 Mark* Ve Control, Volume II
For a typical TMR system, there are two TCDA boards and one TCEA board per core
(total of three). For a typical Simplex system, there are one TCDA board and three TCEA
boards attached to the RS-485 IONet. Physical Position refers only to the order of terminal
boards in this list. The actual order of the terminal boards is fixed within the PIOA.

GEH-6729H PIOA I/O Interface Module Application Guide 1-7

Ø To configure the RS-485 IONet
1. From the Component Editor Tree View, select the desired PIOA.
2. Click the Parameters tab in the Summary View.

1-8 Mark* Ve Control, Volume II

Certain protection parameters must match their corresponding protection jumper
configurations on TCEA. These parameters are System, HPOverspeedTripFreq, and
LPOverspeedTripFreq. To calculate the overspeed jumper configuration, divide the
decimal value by 16 and convert the result into a binary value where each bit represents
the state of a jumper. For the System Configuration parameter, the parameter values
are 1Simplex, 2-LM, and 3-TMR.

Binary Bit Values 512 256 128 64 32 16 8 4 2 1

HP Overspeed Trip Jumpers: J21 J20 J19 J18 J17 J16 J15 J14 J13 J12
Positions for 3960 RPM: 0 0 1 1 1 1 1 1 1 0
System Configuration Jumper Positions: J29 J28
Positions for TMR: 1 1
LP Overspeed Trip Jumpers: J27 J26 J25 J24 J23 J22 J11 J10 J9 J8
Positions for 0 RPM: 0 0 0 0 0 0 0 0 0 0

ARCNET
Ø To add a PIOA module for ARCNET support
1. From the Component Editor, click the Hardware tab.
2. From the Tree View, right-click the Distributed I/O item and select Add Module.
The Add Module Wizard dialog box displays.

GEH-6729H PIOA I/O Interface Module Application Guide 1-9

This page is not used for the ARCNET configuration. Click Next

1-10 Mark* Ve Control, Volume II

GEH-6729H PIOA I/O Interface Module Application Guide 1-11
Ø To configure the ARCNET interface for the exciter
1. From the Component Editor Tree View, select the desired PIOA.
2. Click the Parameters tab in the Summary View.

Specifications
Item Specification
Number of channels One RS-485 IONet channel and one DLAN+ channel.
Input Filter and isolation LAN wires connect to the JPDV board.
DLAN+ filtering is on the JPDV board. The DLAN+ is a transformer isolated LAN with termination
resistance on the primary side of the transformer. The transformer and termination resistance is
located on the BIOA board.
RS-485 IONet filtering and termination is on the JPDV terminal board.
Frame rate RS-485 IONet has a 32 Hz frame rate.
DLAN+ is a change detect LAN. Command messages are sent to the excitation control master
when command data is changed by the controller.
Fault detection Loss of communications (DLAN+ or RS-485 IONet)
Temperature -30 to 65 ºC (-22 to 149 ºF)

1-12 Mark* Ve Control, Volume II

Diagnostics
The I/O pack performs the following self-diagnostic tests:

• A power-up self-test that includes checks of RAM, flash memory, Ethernet ports, and
most of the processor board hardware
• Continuous monitoring of the internal power supplies for correct operation
• A check of the electronic ID information from the terminal board, acquisition board,
and processor board to confirm that the hardware set matches, followed by a check
that the application code loaded from flash memory is correct for the hardware set
• Monitoring for loss of communications (DLAN+ or RS-485 IONet).

Communication LEDs
The PIOA uses the following four additional LEDs for serial communication status:

• ARx flashes on and off when ARCNET messages are being received by PIOA.
• ATx flashes on and off when ARCNET messages are being transmitted by PIOA.
• Rx flashes when RS-485 IONet data bytes are being received by PIOA.
• Tx flashes when RS-485 IONet data bytes are being transmitted by PIOA.

GEH-6729H PIOA I/O Interface Module Application Guide 1-13

Processor LEDs

Color Label Description

Green PWR Shows the presence of control power
Green LINK Provided for each Ethernet port to indicate if a valid Ethernet connection is present
Yellow TxRx Provided for each Ethernet port to indicate when the I/O pack is transmitting or
receiving data over the port
Red / Green ATTN Shows I/O pack status

I/O Pack Status

LED Flashing Pattern Description Software Version

Red LED out There are no detectable problems with the I/O pack. All
ATTN
LED solid on A critical fault is present that prevents the I/O pack from operating. 3.04 or earlier
There could be hardware failures on the processor or acquisition
boards, or there is not any application code loaded.
4 Hz 50% An alarm condition is present in the I/O pack. These alarms include
wrong processor / terminal board combination, terminal board is
missing, or errors in loading the application code.
1.5 Hz 50% The I/O pack is not online.
0.5 Hz 50% This is used during factory testing to draw attention to the I/O pack.
Red Solid Booting - prior to reading Dallas ID 3.05 or later
ATTN
4 Hz 50% Diagnostic present
2 Hz 50% Awaiting an IP address
1 Hz 50% No Firmware to load (Program mode)
0.5 Hz 50% Application not loaded
Green Solid BIOS (at power on), but if it remains in this state, the I/O pack is
ATTN not functioning properly and should be replaced.
2 Hz 50% Awaiting Auto-Reconfiguration release
1 Hz 50% In WAIT or STANDBY mode
Two 4 Hz flashes Application online
every 4 sec

1-14 Mark* Ve Control, Volume II

Configuration
Parameter Description Choices
NetworkType The network protocol used IONet-485, ARCNET
TCDA1PromRev TCDA1 EPROM revision ** F1ACE, F1ACM, F1ACN,
F1BCE, F1BCM, F1BCN
TCDA2PromRev TCDA2 EPROM revision ** F1ACE, F1ACM, F1ACN,
F1BCE, F1BCM, F1BCN
TCDA3PromRev TCDA3 EPROM revision ** F1ACE, F1ACM, F1ACN,
F1BCE, F1BCM, F1BCN
TCEA1PromRev TCEA1 EPROM revision ** F1ACK, F1ACM, F1BEC
TCEA2PromRev TCEA2 EPROM revision ** F1ACK, F1ACM, F1BEC
TCEA3PromRev TCEA3 EPROM revision ** F1ACK, F1ACM, F1BEC
** The prom set revisions listed under the Choices column have been validated with the Mark Ve control system, and are
supported by the configuration tools. Other prom revisions exist, but should be replaced with one of the validated/supported
prom sets.
Protection
GenBkr1CloseTime The anticipated time required to close the breaker, in cycles 0 — 255 cycles
The number of cycles required between the time the
breaker closure is initiated from the Mark Ve controller
to the time the breaker actually closes. The constant
is specified in cycles so it is independent of the
turbine/generator set frequency. The constant is necessary
for breaker closure to occur at approximately zero phase
difference between the generator and the system bus for a
zero current flow through the breaker at closure time. The
Turbine vendor specifies the value since the constant is
dependent on breaker type.
GenBkr2CloseTime The anticipated time required to close the breaker, in cycles 0 — 255 cycles
The number of cycles required between the time the
breaker closure is initiated from the Mark Ve control to the
time the breaker actually closes. The constant is specified
in cycles so it is independent of the turbine/generator set
frequency. The constant is necessary for breaker closure
to occur at approximately zero phase difference between
the generator and the system bus for a zero current flow
through the breaker at closure time. The Turbine vendor
specifies the value since the constant is dependent on
breaker type.
GenBkrAdaptLimit If adaptive close time enabled, the maximum amount of 0 — 255 cycles
compensation allowed by the control
The Mark Ve control synchronizing function adjusts the
defined Breaker Close Times by comparing the time the
breaker closure signal was sent from the Mark Ve control to
the time the breaker actually closed, as the actual time may
change with the age of the breaker. The Breaker Adjust
Limit constant specifies the limit the control is allowed to
adjust the Breaker Close Time constants. The adjustments
are made in increments of one. For the values above, the
initial close time is set at five cycles. If the actual required

GEH-6729H PIOA I/O Interface Module Application Guide 1-15

Parameter Description Choices
close time becomes eight cycles, the Mark Ve control
adjusts the five to an eight, taking three closures to make
this change. If the time required becomes nine cycles, the
Mark Ve control does not make another adjustment, but
leaves it at eight and generates a diagnostic alarm.
GenBkrAdaptEnable Adaptive close time enabled TRUE, FALSE
Breaker self-adaptive correction enables the Mark Ve
control to use the adaptive breaker closure time function.
GenBkr1DiagEnable Log diagnostic if GenBkr1CloseTime parameter does not TRUE, FALSE
meet specification
GenBkr2DiagEnable Log diagnostic if GenBkr2CloseTime parameter does not TRUE, FALSE
meet specification
GenVoltDiagEnable Log diagnostic if 125 V dc has problem TRUE, FALSE
This parameter (Gen Panel 125 V dc Diagnostic Enable)
controls the activity of a diagnostic alarm generated upon
the loss of availability of generator breaker close voltage.
This is typically not enabled for mechanical or compressor
drive applications.
TripSystem Type of Trip Board used EXT, FPT, GAS, MED,
LARGE
Type Application Trip Board
MED Medium and TCTS
Fitchburg steam
turbines
GAS All gas turbines TCTG
LARGE Large steam turbines TCTL
EXT Large steam turbines TCTE
System Type of control system used LM, SIMPLEX, TMR
HPBaseSpdIndex For TCEAG#A, HP Base/Full Load Frequency 3000, 3600, 3980, 4800,
HP Base Speed Index parameter specifies the HP shaft 4860, 5100, 7100, 7491,
design speed. The rotor design speed is fixed and is 7833
independent of operating speed. This constant must match
the hardware jumper settings or a diagnostic alarm will
be generated.
LPBaseSpdIndex For TCEAG#A, LP Base/Full Load Frequency NotUsed, 2880, 3300, 4150,
LP base_speed index specifies the LP shaft design speed. 4670, 4980, 6500
The LP shaft design speed is fixed and is independent of
the operating speed. Therefore, 100% operating speed
may or may not correspond to 100% design speed. This
constant must match the hardware jumper settings or a
diagnostic alarm will be generated.
HPOverSpdIndex For TCEAG#A, the binary representation of the desired HP 0 – 255 cnts
trip frequency
HP overspeed index is the rated design speed percentage
that the rotor is allowed to reach before an overspeed
condition generates an alarm. This constant must match
the hardware jumper settings or a diagnostic alarm will be
generated. Each count represents 0.25 percent.

1-16 Mark* Ve Control, Volume II

Parameter Description Choices
LPOverSpdIndex For TCEAG#A, the binary representation of the desired LP 0 – 255 cnts
trip frequency
LP overspeed_index is the design speed percentage the
rotor reachs before an overspeed condition generates an
alarm. This constant must match the hardware jumper
settings or a diagnostic alarm will be generated. Each
count represents 0.25 percent.
TripAnticationEnable Trip Anticipation Enable TRUE, FALSE
This function monitors the turbine's acceleration. The
acceleration can be so high that the turbine reaches and
exceeds the overspeed point in an extremely short time.
By the time the controller issues the trip and the valves
react accordingly, the turbine may already have been
damaged. When this high acceleration rate is detected
and this function is enabled, the Mark Ve control issues a
trip instead of waiting for the overspeed detection. Trip
anticipate is used exclusively on large steam turbines.
LPAccelCheckEnable For TCEAG#B, enable for LP acceleration check TRUE, FALSE

If there is a mismatch between these values and the jumpers on the TCEA board, the
Mark Ve control system may not go into Controlling state.

Attention
HPBreakAwaySpdRatio For TCEAG#B, this is the percent of HP speed at which 0 – 128%
the LP shaft speed should be greater than zero. This only
applies to two-shaft turbines.
LPBreakAwaySpdRatio For TCEAG#B, signal not used in TCEA code 0 – 128%
HPOverspeedTripFreq For TCEAG#B, the HP Overspeed Trip Frequency, in 0 – 16363 Hz
pulses per second
This is the HP input frequency for overspeed trip setting.
Enter the pulse frequency for the emergency overspeed
trip setpoint. For example, if the emergency overspeed
setting was 110% of rated speed, then the value should be
set to 3600 times 110%, or 3960 pulses/second.
LPOverspeedTripFreq For TCEAG#B, the LP Overspeed Trip Frequency, in 0 – 16363 Hz
pulses per second
This is the LP input frequency for overspeed trip setting.
Enter the pulse frequency for the emergency overspeed
trip setpoint. For example, if the emergency overspeed
setting was 110% of rated speed, then the value should be
set to 3600 times 110%, or 3960 pulses/second.

GEH-6729H PIOA I/O Interface Module Application Guide 1-17

Parameter Description Choices
HPFullLoadFreq For TCEAG#B, the HP Base/Full Load Frequency, in 0 — 16363
pulses per second
This is the HP input frequency for 100 percent rated speed.
Enter the pulse frequency from the magnetic pickups for
100% rated speed. For example, if 100% rated speed is
1800 rpm and the pickup wheel has 120 teeth, the correct
value is: 1800 RPM x 120 pulses/revolution /
60 seconds/minute = 3600 pulses/second
LPFullLoadFreq For TCEAG#B, the LP Base/Full Load Frequency, in 0 – 16363 Hz
pulses per second
This is the LP input frequency for 100 percent rated speed.
Enter the pulse frequency from the magnetic pickups for
100% rated speed. For example, if 100% rated speed is
1800 rpm and the pickup wheel has 120 teeth, the correct
value is: 1800 RPM x 120 pulses/revolution /
60 seconds/minute = 3600 pulses/second
NumLPInterruptsBtwnCheck This is the number of LP speed interrupts between 1 – 15 cnts
acceleration checks. Each interrupt represents eight teeth
passing (for TCEAG#B F1BE# PromRevs).
NumInterruptsForSpdCalc Number of LP speed interrupts for speed calculation(for 1 – 15 cnts
TCEAG#B F1BE# PromRevs)
MinLPProtFreq Minimum LP speed (in Hz) to enable protection(for 1 – 32767 Hz
TCEAG#B F1BE# PromRevs)
LPAccelLimit LP acceleration limit (in Hz/sec)(for TCEAG#B F1BE# 1 – 32767 Hz / sec
PromRevs)
DropNumber The ARCNET address of the PIOA, expressed in 0x31 - 0xFE
Hexadecimal format
GenerateEvents Generate Sequence of Events (SOE) records for changes Enable, Disable
in excitation logic input signals received through the
ARCNET interface with the exciter
BaudRate The baud rate of the IONet-RS485 network 1000 KB, 750 KB
CoreType This is the type of digital I/O core used. The DD digital I/O DD, OTHER
core has 192 contact inputs (0 outputs). All other digital I/O
cores have 96 contact inputs and 60 relay outputs.
InDCore Determines if the module resides in the D core (TRUE), or TRUE, FALSE
in the C, R, S, or T cores (FALSE)
SimplexEX Determines if the attached EX2000 has only one master TRUE, FALSE
core
Contact Inputs
ContactInput Condition of input (diagnostic alarms are only enabled Unused, Used
when the contact input is used)
SignalInvert Inversion makes signal true if contact is open Normal, Invert
SeqOfEvents Record contact transitions in sequence of events Enable, Disable
DiagVoteEnab Enable voting disagreement diagnostic Enable, Disable

1-18 Mark* Ve Control, Volume II

Parameter Description Choices
Relay Outputs
RelayOutput Condition of relay (diagnostic alarms are only Unused, Used
enabled when the contact input is used)
Boolean Inputs
Input Condition of input Unused, Used
DiagVoteEnab Enable voting disagreement diagnostic Enable, Disable
Analog Inputs/Output
Usage Condition of signal Unused, Used
Scale This is the type of scaling to perform on input None, Logical, Counts, Frequency,
value. It affects conversion from Mark V binary FreqLow, Percent, Degrees
fix point notation to Mark Ve floating point (based
upon input or output type).
TMR_DiffLimit Diag Limit for TMR input vote difference, in percent 0 - 200
Flame Detectors
FlameDet Condition of input Unused, Used
This enables use of flame detectors on gas turbine
systems.
FlameLimitLo Flame Threshold Limit Low 0 – 255 pulses
This is the first of two flame threshold limits for
each detector. Threshold is based on the number
of pulses generated by the flame detectors in
1/16th of a second. A value of 2 in this field
is equivalent to a 32 Hz signal from the flame
detectors. Normal operation produces a 300 Hz
signal or about 18 pulses in 1/16th of a second. A
Lower detection setting equals higher sensitivity.
FlameLimitHi Flame Threshold Limit High 0 - 255 pulses
This is the second of two flame threshold limits
for each detector. Selection of the low or high
threshold limit is based on the status of Boolean
signals L28FD_PRI_HI (for flame inputs 1 through
4) and L28FD_SEC_HI (for flame inputs 5 through
8). Threshold is based on the number of pulses
generated by the flame detectors in 1/16th of a
second. A value of 2 in this field is equivalent to
a 32 Hz signal from the flame detectors. Normal
operation produces a 300 Hz signal, or about 18
pulses in 1/16th of a second.
Scale Type of scaling to perform on input value Counts
TMR_DiffLimt Diag Limit for TMR input vote difference, in hertz 0 – 160 Hz
Boolean Outputs
Output Condition of Output Unused, Used
GenerateEvents FALSE

GEH-6729H PIOA I/O Interface Module Application Guide 1-19

TCDA Jumper Configuration
Core Location Revision
<QDn> 1,2,3 Rev. TCDAG#A,
TCDAG#B, or TCDAH#B
<CD> 1
<DD> 1,3

Jumper Position Default Position Application Notes

J1 Off On = factory test Board test enable
OFF for proper operation
J2 In = Terminated Out = not terminated IONet termination resistor
J3
J6 0 Binary weighted IONet Address
J5 0 value This configuration varies for:
J4 0 <QDn>,<CD>,<DD>
1 1
See next table
1 2
1 4
J7 1 = enable 0 = disable Enable stall timer
Enable = normal operation
J8 In = operate Out = test mode Test enable
In = normal operation
JP9 B = 16 A = 11.7 IONet frequency (applies only to
TCDAH#B):
B for all DS200TCDAF1B prom sets,
and F1A prom sets with rev CI and
above; A for DS200TCDAF1A prom
sets up to and including rev CE

TCDA Binary Summation Board Addressing - J4, J5, J6

CORE Location Address J4 J5 J6

<QD1> 1 0 0 0 0
<QD2> 2 1 0 0 1
<CD> 1 0 0 0 0
<DD> 1 0 0 0 0
<DD> 3 1 0 0 1

1-20 Mark* Ve Control, Volume II

TCEA Jumper Configuration

Option One

Core Location Revision

1 <X> Rev. TCEAG#A
3 <Y>
5 <Z>

Jumper Default Position Position Binary Value Application Notes

J1 0 1 = test Test Function: 1 = Enable
J2 0 1 = term IONet termination resistors
J3 0 = resistors not connected

J4 Refer to Note 1 table 1 IONet address

J5 2 This configuration varies for X,Y,Z
J6 4
J8 Application-specific 1 Base frequency, low-pressure shaft
J9 2 Refer to Note 2 table
J10 4
J11 8
J12 Application-specific 1 Base frequency, high-pressure shaft
J13 2 Refer to Note 3 table
J14 4
J15 8
J16 Application-specific 1 High-pressure shaft trip frequency
J17 2 Refer to Note 5 below
J18 4
J19 8
J20 16
J21 32
J22 Application-specific 1 Low-pressure shaft trip frequency
J23 2 Refer to Note 5 below
J24 4
J25 8
J26 16
J27 32
J28 Application-specific 1 Type of control application
J29 2 Refer to Note 4 table
J30 1 = enable 0 = stall disable Stall function: must be in position 1.
J31 In Out Factory test. Install for proper field
operation.

GEH-6729H PIOA I/O Interface Module Application Guide 1-21

Note 1

TCEA - X,Y,Z board definition determined according to binary summation

Board Address J4 J5 J6
X 4 1 0 0
Y 5 1 0 1
Z 6 1 1 0

Note 2

TCEA - Base frequency of the speed sensors for the low-pressure shaft of a dual shaft machine. Select table
frequency, which is the closest to: {rated RPM * #teeth /60 sec/min}.
Frequency J11 J10 J9 J8
2880 *** 0 1 1 0
3300 0 0 0 1
4150 *** 0 1 0 1
4670 0 0 1 0
4980 0 0 1 1
6500 0 1 0 0
Not Used ** 0 0 0 0
** Not Used is the default setting for single shaft machines.
*** Available with TCEAFIACJ or later proms

Note 3

TCEA - Base frequency of the speed sensors for a single shaft machine or the high-pressure shaft of a dual shaft
machine. Select table frequency, which is the closest to: {rated RPM * #teeth/60 sec/min}.
Frequency J15 J14 J13 J12
3000 0 0 0 1
3600 0 0 1 0
3980 ** 1 0 0 1
4800 0 0 1 1
4860 0 1 0 0
5100 0 1 0 1
7100 0 1 1 0
7491 0 1 1 1
7833 1 0 0 0
Not Used 0 0 0 0
** Available with TCEAFIACK or later PROMS.

1-22 Mark* Ve Control, Volume II

Note 4

TCEA - Type of Control Application

Type of Application J29 J28
LM2500 or LM 5000 0 1
Simplex 1 0
All other 1 1

Note 5: TCEA– High-pressure and low-pressure shaft trip frequency is the pulses per
second from the speed sensors (magnetic pickups) that result in an emergency overspeed
trip.

Trip Frequency = Trip RPM * #teeth/60 sec/min = Base Frequency * {100 + Binary
Sum/4}/100

or, solving for Binary Sum,

Binary Sum = {(Trip Frequency/Base Frequency) -1} * 400

Where Binary Sum is the decimal equivalent of the binary weighted values.

For example:

Gas Turbine
. Rated RPM = 5100, Emergency Overspeed set to 112%, 60 teeth on pickup wheel.

Base Frequency = 5100 * 60/60 = 5100

Set J15 = 0, J14 = 1, J13 = 0, J12 = 1.

Binary Sum = {(5712/5100) - 1} * 400 = {1.12 - 1} * 400 = 48; in binary, 48 = 110000.

Set J21 = 1, J20 = 1, J19 = 0, J18 = 0, J17 = 0, J16 = 0.

SteamTurbine
. Rated RPM = 3600, Emergency Overspeed set to 110%, 160 teeth on pickup wheel.

Base Frequency = 3600 * 160/60 = 9600. Set J15 = 1, J14 = 0, J13 = 0, J12 = 0.

Binary Sum = {(3690/3600) - 1} * 400 = 40; in binary, 40 = 101000.

Set J21 = 1, J20 = 0, J19 = 1, J18 = 0, J17 = 0, J16 = 0.

GEH-6729H PIOA I/O Interface Module Application Guide 1-23

Option Two

Core Location Revision

1 <X> Rev. TCEAG#B
3 <Y>
5 <Z>

Jumper Position Binary Value Application Notes

0 1 = test Test Function: 1 = Enable
J1
J2 0 1 = termination RS-485 IONet termination
J3 resistors resistors; 0 = resistors not
connected
J4 Refer to Note 1 table for TCEAG#A 1 RS-485 IONet address; this
J5 2 configuration varies for X, Y, and
J6 4 Z locations
J8 Application-specific 1 Low-pressure shaft trip frequency
J9 2 Refer to Note 6, next page
J10 4
J11 8

J22 16
J23 32
J24 64
J25 128
J26 256
J27 512
J12 Application-specific 1 High-pressure shaft trip frequency
J13 2 Refer to Note 6
J14 4
J15 8

J16 16
J17 32
J18 64
J19 128
J20 256
J21 512
J28 Application-specific 1 Type of control application
J29 2 Refer to Note 4 for TCEAG#A
J30 1 = enable 0 = stall disable Stall function: must be in position
1
J31 In Out Factory test. Install for proper
field operation.

1-24 Mark* Ve Control, Volume II

Note 6: TCEA– High-pressure and low-pressure shaft trip frequency is the pulses per
second from the speed sensors (magnetic pickups) that result in an emergency overspeed
trip. For the G#B vintage of the TCEA, the exact frequency is set in the Mark VIe
Parameters tab of a configured module. The binary value of the jumpers MUST be equal
to the selected trip frequency divided by 16.

Binary Value = (Trip Frequency/16)

Where Binary Value is the hexadecimal equivalent of the binary weighted values.

The following tables show the structure for the HP and LP settings:

HP Decimal Hex J21 J20 J19 J18 J17 J16 J15 J14 J13 J12
Trip value value (512) (256) (128) (64) (32) (16) (8) (4) (2) (1)
(Hz)
16383 1023 3FF 1 1 1 1 1 1 1 1 1 1 Max
16 1 001 0 0 0 0 0 0 0 0 0 1 Min
0 0 000 0 0 0 0 0 0 0 0 0 0 Shaft
not
used

LP Decimal Hex J27 J26 J25 J24 J23 J22 J11 J10 J9 J8
Trip value value (512) (256) (128) (64) (32) (16) (8) (4) (2) (1)
(Hz)
16383 1023 3FF 1 1 1 1 1 1 1 1 1 1 Max
16 1 001 0 0 0 0 0 0 0 0 0 1 Min
0 0 000 0 0 0 0 0 0 0 0 0 0 Shaft
not
used

Example:

HP shaft overspeed trip frequency set to 3960 (110% of 3600)

3960/16 = 247.5 ===> round DOWN (always) to 247 decimal = 0F7 Hex

0 F 7
J21 J20 J19 J18 J17 J16 J15 J14 J13 J12
0 0 1 1 1 1 0 1 1 1

GEH-6729H PIOA I/O Interface Module Application Guide 1-25

DTBA Jumper Configuration
Core Location Revision
<QDn>
6
<CD> Rev. DTBAG#A
<DD> 6, 8

Jumper Isolates Position Application Notes

BJ1 1–9 In = Connect +125 Out = Remove for testing only. Isolates the 125
V dv Interrogation Disconnect V dc positive bus from the output wiring
BJ2 10–18
voltage to contact +125 V dc to help troubleshoot ground faults on the
inputs Interrogation 125 V dc system.
BJ3 19–27 voltage from
contact inputs
BJ4 28–36
BJ5 37–46

DTBB Jumper Configuration

Core Location Revision
<QDn>
<CD> 7, 9 Rev. DTBBG#A
<DD>

Jumper Isolates Position Application Notes

BJ1 47–56 In = Connect +125 Out = Disconnect Remove for testing only. Isolates the 125
V dv Interrogation +125 V dc V dc positive bus from the output wiring
BJ2 57–66
voltage to contact Interrogation to help troubleshoot ground faults on the
BJ3 67–76 inputs voltage from 125 V dc system. Refer to Appendix C,
BJ4 77–86 contact inputs page 3–14.

BJ5 87–96

1-26 Mark* Ve Control, Volume II

DTBC Jumper Configuration
Core Location Revision
<QDn>
<CD> 8 Rev. DTBCG#A

Jumpers Position Application Notes

Pn and Mn
1 Both In = Mark Ve control Both Out = Dry contact Always Install Jumpers in Pairs
2 supplies power to output output Install corresponding (Pn and Mn) jumpers for
3 solenoid driver output
4 Solenoid driver output For example, insert P8 and M8 for solenoid
5 circuit 8
6 Voltage depends on Remove corresponding (Pn and Mn)
7 application jumpers for dry contact outputs
8 For example, remove P10 and M10 for dry
9 contact circuit 10
10 Refer to Appendix C, page 3–15
11
12
13
14
15
16
17
18

GEH-6729H PIOA I/O Interface Module Application Guide 1-27

DTBD Jumper Configuration
Core Location Revision
<QDn>
9
<CD> Rev. DTBDQ#A
optional

Jumpers Position Application Notes

Pn and Mn
1 Both In = Mark Ve Both Out = Dry contact output Always Install Jumpers in Pairs
2 control supplies power Install corresponding (Pn and Mn) jumpers for
3 to output solenoid driver output
4 Solenoid driver output For example, insert P8 and M8 for solenoid
5 circuit 8
6 Voltage depends on Remove corresponding (Pn and Mn)
7 application jumpers for dry contact outputs
8 For example, remove P10 and M10 for dry
9 contact circuit 10
10 Refer to Appendix C page 3–16
11
12
13
14
15
16

PTBA Jumper Configuration

Core Location Revision

6 Rev. PTBAQ#A

Jumper Position Application Notes

BJ1 In = Enabled Out = Disabled Local audible alarm enable
ALM Remove to silence alarm
Refer to Figure C-68.

1-28 Mark* Ve Control, Volume II

PIOA Specific Alarms
33
Description Complete loss of communication with IONet-485.

Possible Cause

• Bad/Disconnected RS485 cable; Digital and Protections cores powered down

Solution

• Replace/reconnect RS485 cable; power up the cores

34
Description Complete loss of communication with ARCNET.

Possible Cause

• Bad/Disconnected ARCNET cable; no ARCNET devices on the network

Solution

• Replace/reconnect ARCNET cable;

35
Description Invalid Frame Rate: [ ]ms. Only [ ]ms Rate is supported

Possible Cause

• The PIOA only supports a 40 ms controller frame rate.

Solution

• Set the controller frame rate to 40 ms

50 - 52
Description Lost communication with TCDA[ ].

Possible Cause

• Bad/disconnected RS485 cable; TCDA powered down; hardware failure

Solution

• Replace/reconnect RS485 cable; power up the cores; replace TCDA if necessary

GEH-6729H PIOA I/O Interface Module Application Guide 1-29

53 - 55
Description Lost communication with TCEA[ ].

Possible Cause

• Bad/disconnected RS485 cable; TCEA powered down; hardware failure

Solution

• Replace/reconnect RS485 cable; power up the cores; replace TCEA if necessary

56 - 58
Description Software/HW Jumper Configuration mismatch on TCEA[ ].

• The indicated relay circuit (#[nn]) on the TCDA card in the QD (or CD) module does not appear to be functioning properly.
• This fault is detected by monitoring the current drawn through cable JO1 or JO2 from a TCRA card. There are several
possible failures that can lead to this diagnostic alarm:
• (1) There is a component failure on the TCDA card, so that the TCDA either cannot properly operate the relay, or
cannot properly detect the state of the relay.
• (2) Cable JO1 or JO2 is not properly connected. This fault is usually indicated by the additional presence of diagnostic
alarm "Plug JO[n] is disconnected"
• (3) Cable JO1 or JO2 is damaged.
• (4) (Unlikely) There is a component failure on the TCRA card.
• Because the relay drivers are actually located on the TCRA card, the TCDA is not normally capable of detecting a failure
in either the relay driver or the relay itself. (Relay coil burned out, for example.)

Solution

• The first thing to check is cables JO1 and JO2. JO1 carries signals for relays 1 through 30; JO2 carries those for relays 31
through 60. Make sure these cables are securely plugged in at both ends (one end on the TCDA, one end on the TCRA),
and that the cables appear to be undamaged. Also check to make sure that the cables are plugged into the correct sockets,
since there are several options depending on whether the card is used in simplex or TMR mode. The appropriate cable
(JO1 or JO2) may even need to be replaced.

Note Be warned that plugging in or unplugging cable JO1 or JO2 with power applied may cause the TCDA card to reset
due to transient voltage spikes on the power bus. It would be best to remove power from the TCDA before moving these
cables. If replacing the appropriate cable still does not fix the problem, then the fault is almost certainly with the TCDA
card. Replacing the TCDA should then fix this problem.

• Replace the TCRA board only as a last resort.

Solution

• Check the IO config against the jumper settings.

1-38 Mark* Ve Control, Volume II

2908-2910
Description TCEA[ ] System config trouble

Possible Cause

Gas,TCTG MED LG STM,TCTL LG STM,TCTE

STM,TCTSL
ETR1 [X] K5 K11 K4 K11
ETR1 [Y] K4 K5 K5 K5
ETR1 [Z] K6 K13 K6 K13

Solution

• Check the cabling on TCEA "JL"; if cabling is OK, replace TCEA; if alarm still indicates trouble replace the trip
board TCT_.

2920-2922
Description TCEA[ ] Digital output, 0ETR2

Possible Cause

• The relay driver circuitry associated with relay ETR2 is bad. The relationship is:

Gas,TCTG MED LG STM,TCTL LG STM,TCTE

STM,TCTS
ETR2 [X] K8 K10 K10 K10
ETR2 [Y] K7 K4 K11 K4
ETR2 [Z] K9 K12 K12 K12

Solution

• Check the cabling on TCEA "JL"; if cabling is OK, replace TCEA; if alarm still indicates trouble replace the trip
board TCT_.

2923-2925
Description TCEA[ ] Digital output, 0DRV0 (clamp)

Possible Cause

• The relay driver circuitry associated with circuit 0DRV0, the servo clamping function, is bad.

Solution

• Check the cabling on TCEA "JL"; if cabling is OK, replace TCEA; if alarm still indicates trouble replace the trip
board TCT_.

1-40 Mark* Ve Control, Volume II

2926-2928
Description TCEA[ ] Digital output, 0DRV1 (KE1,ELO)

Possible Cause

• The relay driver circuitry associated with circuit 0DRV1, is bad. On Large Steam, this is the ELO, k19 (electrical
lockout); on Medium Steam, this is the KE1, k19 (emergency trip bypass test 1); on Gas turbines, this circuit is not used.

Solution

• Check the cabling on TCEA "JL"; if cabling is OK, replace TCEA; if alarm still indicates trouble replace the trip
board TCT_.

2929-2931
Description TCEA[ ] Digital output, 0DRV2 (KE2)

Possible Cause

• The relay driver circuitry associated with circuit 0DRV2, is bad. On Large Steam, this circuit is not used; on Medium
Steam, this is the KE2, k18 (emergency trip bypass test 2); on Gas turbine, this circuit is not used.

Solution

• Check the cabling on TCEA "JL"; if cabling is OK, replace TCEA; if alarm still indicates trouble replace the trip
board TCT_.

2932-2934
Description TCEA[ ] Digital output, 0ALARM

Possible Cause

• The Alarm (horn) on the TCEB board, connected via the PTBA jumper "AL_EN" and the trip board, TCT_, will have lost
at least one of its 3 inputs and may not function (2/3 voting may override the problem).

STM,TCTS
PTR1 [X] K13 K7 K7 K7
PTR1 [Y] K14 K8 K8 K8
PTR1 [Z] K15 K9 K9 K9

• If replacing the trip board does not fix the problem, replace TCEA and/or check cable "JL" continuity [R] JL-9; [S] JL-10;
[T] JL-11. If problem persists, replace the appropriate MVRA.

2944-2946
Description TCEA[ ] TMR check trouble, PTR2

• The 3 PTR4/ETR3 relays are not in agreement, i.e. one is bad.

Solution

• If no PTR4 relay driver RD5 failure diagnostic is indicated, then suspect the trip board TCT_; determine which
PTR4/ETR3 relay is bad by looking for a corresponding vote exchange diagnostic message; verify that the PTR4/ETR3
relay is not loose.

Gas,TCTG TCTE
PTR4 [R] K16 ETR3 K14
PTR4 [S] K17 ETR3 K6
PTR4 [T] K18 ETR3 K18

• If replacing the trip board does not fix the problem, replace TCEA and/or check cable "JL" continuity [R] JL-18; [S]
JL-19; [T] JL-20. If still a problem replace the appropriate MVRA.

1-44 Mark* Ve Control, Volume II

2953-2955
Description TCEA[ ] Loopback, relay, ETR1

Possible Cause

• The feedback of an ETR1 contact disagrees with the required or intended state of this particular relay; the [Z] (TCE3)
board only checks the ETR1 relay driven by itself. Likewise for [X] and [Y].

2968-2970
Description TCEA[ ] Loopback, relay, PTR2

Possible Cause

• The feedback of a PTR2 contact disagrees with the required or intended state of this particular relay; the [Z] (TCE3) board
only checks the PTR2 relay driven by [T] MVRA; Likewise there is a partnership between [X] and [R], [Y] and [S].

Solution

Gas,TCTG MED LG STM,TCTL LG STM,TCTE

STM,TCTS
PTR1 [R] K19 K15 K15 K15
PTR1 [S] K20 K16 K16 K16
PTR1 [T] K21 K17 K17 K17

Gas,TCTG MED LG STM,TCTL LG STM,TCTE

STM,TCTS
PTR2 [R] K19 K15 K15 K15
PTR2 [S] K20 K16 K16 K16
PTR2 [T] K21 K17 K17 K17

• If replacing the trip board does not fix the problem, replace TCEA and/or check cable "JL" continuity [X] JL-12; [Y]
JL-13; [Z] JL-14. If still a problem replace the appropriate MVRA.
• If replacing the trip board does not fix the problem, replace TCEA and/or check cable "JL" continuity [X] JL-15; [Y]
JL-16; [Z] JL-17 for Gas Turb, or JL-15 for the Med Steam, or JL-16 for Large Steam. If still a problem replace the
appropriate MVRA.

1-48 Mark* Ve Control, Volume II

2971-2973
Description TCEA[ ] Loopback, relay, KP- 1/PTR3/MLO

Possible Cause

• The feedback of a KP-1/PTR3/MLO relay contact disagrees with the required or intended state of this particular relay;
KP-1 (k6) is used on Med Steam; PTR3 (k10, k11, k12) are used on Gas Turbine; MLO (k13) is used on Large Steam; and
PTR3 (k19, k20, k21) are used on Extended Large Steam. On Gas Turbine and Extend Large Steam, the [Z] (TCE3)
board only checks the PTR3 relay driven by [T] MVRA; likewise there is a partnership between [X] and [R], [Y] and [S].

Solution

• If all three TCEx boards are reporting this problem, suspect the application code; the relay is driven from the MVRA and
checked by the TCEA; the application code must write the required relay status to an appropriate coil to inform the TCEA
of what the MVRA is doing. If it is on one TCEA board only, then either a PTR3 relay driver RD4 failure diagnostic or a
PTR3 TMR check trouble diagnostic should be indicated. Verify that the appropriate relay is not loose;
• If replacing the trip board does not fix the problem, replace TCEA and/or check cable "JL" continuity [X] JL-15; [Y]
JL-16; [Z] JL-17 for Gas Turb, or JL-15 for the Med Steam, or JL-16 for Large Steam. If still a problem replace the
appropriate MVRA.

2974-2976
Description TCEA[ ] Loopback, relay, KP- 2/PTR4/ORST

Possible Cause

• The feedback of a KP- 2/PTR4/ORST relay contact disagrees with the required or intended state of this particular relay;
KP-2 (k14) is used on Med Steam/ PTR3 (k16, k17, k18) are used on Gas Turb/MLO (k14) is used on Large Steam.
On gas turb, the [Z] (TCE3) board only checks the PTR4 relay driven by [T] MVRA; Likewise there is a partnership
between [X] and [R], [Y] and [S].

Solution

• If all three TCEx boards are reporting this problem, suspect the application code; the relay is driven from MVRA and
checked by TCEA; the application code must write the relay status to an appropriate coil to inform TCEA what MVRA
is doing. If it is on one TCEA board only and if diag 1357 is not showing up then suspect the trip board TCT_; make
sure the relay is not loose; If replacing the trip board does not fix the problem, replace TCEA and/or check cable "JL"
continuity [X] JL-18; [Y] JL-19; [Z] JL 20 for Gas Turb, or JL-16 for the Med Steam, or JL-17 for Large Steam; If still
a problem replace the appropriate MVRA.

GEH-6729H PIOA I/O Interface Module Application Guide 1-49

2977-2979
Description TCEA[ ] Loopback, solenoid, OTS

Possible Cause

• Applicable to Large Steam only; The OTS (k18) relay contact disagrees with the required or intended position of this
particular relay

Solution

• If all three TCEx boards are reporting this problem, suspect the application code; the relay is driven from MVRA and
checked by TCEA; the application code must write the relay status to an appropriate coil to inform TCEA what MVRA
is doing. If it is on one TCEA board only and if diag 1358 is not showing up then suspect the trip board TCT_; make
sure the relay is not loose; If replacing the trip board does not fix the problem, replace TCEA and/or check cable "JL"
continuity JL-18; If still a problem replace the appropriate MVRA.

2980-2982
Description TCEA[ ] Loopback, solenoid, ETD1/SOL1/MTSV

Possible Cause

• This diagnostic is checking a composite function, i.e. one made up of more than one relay. If other diagnostics associated
with these relays show up, they should be resolved first. This diagnostic will be true when the feedback signal, indicating
actual voltage applied to the trip solenoid coil, disagrees with the required or intended value for this solenoid:
• ETD1 – Med Steam, TCTS – elect trip device
– eqn is ETD1= (ETR1 OR KE1)
AND (PTR1 OR KP1)

SOL1 – Gas Turb, TCTG – solenoid #1

– eqn is SOL1= (ETR1 and PTR1)

MTSV – Large Steam, TCTL – mech Trip sol valve.

• If all three TCEx boards are reporting this problem, suspect:

• Gas Turb: the trip board TCTG, the power cable J7W, or wiring problems on the output screws of PTBA;
• Large Stm: the trip board TCTL, the power cable J18 (AC power), or wiring problems on the output screws of PTBA;
• If only one processor board reports the problem, suspect the detection circuitry, i.e. cable JL, TCT_, or TCEA.

1-52 Mark* Ve Control, Volume II

2989-2991
Description TCEA[ ] Loopback, solenoid, SOL4/MLO

Possible Cause

• This diagnostic is checking a composite function for Gas Turb, nothing for Med Steam, and a single Relay for Large
Steam. If other diagnostics associated with these relays show up, they should be resolved first. This diagnostic will be
true when The feedback signal, indicating actual voltage applied to the solenoid coil, disagrees with the required or
intended value for this solenoid:
• N/A – for Med STEAM

SOL4 – Gas Turb, TCTG – solenoid #4

eqn is SOL4 = (ETR2 and PTR4)

MLO – Large Steam, TCTL – mech Lockout valve

eqn is MLO = relay MLO
• This check point is downstream of the TMR hardware, after the hardware has necked down to a single circuit.

Solution

• If all three TCEx boards are reporting this problem, suspect:

• Gas Turb: The trip board TCT_, the power cable J7W, or wiring problems on the output screws of PTBA;
• LargeStm: The trip board TCT_, the power cable J18 (AC power), or wiring problems on the output screws of PTBA;
• If only one processor board reports the problem, suspect the detection circuitry, i.e. cable JL, TCT_, or TCEA.

2992-2994
Description TCEA[ ] Loopback, solenoid, 0RST

Possible Cause

• This diagnostic is for Large Steam only. If other diagnostics associated with this function show up, they should be
resolved first. This diagnostic will be true when The feedback signal, indicating actual voltage applied to the solenoid coil,
disagrees with the required or intended value for this solenoid. This check point is downstream of the TMR hardware,
after the hardware has necked down to a single circuit.

Solution

• If all three TCEx boards are reporting this problem, suspect: the trip board TCT_, the power cable J18 (AC power), or
wiring problems on the output screws of PTBA; if only one processor board reports the problem, suspect the detection
circuitry, i.e. cable JL, TCT_, or TCEA.

GEH-6729H PIOA I/O Interface Module Application Guide 1-53

2995-2997
Description TCEA[ ] Loopback, solenoid, OTS

Possible Cause

Solution

• If all three TCEx boards are reporting this problem, suspect the trip board TCT_, the power cable J18 (ac power), or
wiring problems on the output screws of PTBA; if only one processor board reports the problem, suspect the detection
circuitry, i.e. cable JL, TCT_, or TCEA.

2998-3000
Description Unused diagnostic alarm

Possible Cause

• Unused diagnostic alarm

Solution

• Reset Diagnostic alarms

3002-3004
Description TCEA[ ] Slow synch check 25X relay

Possible Cause

• The synch check relay, L25X (sometimes designated L25A), is not picked up when the synch relay L25 picks up. This is
wrong, the synch check relay should always pickup and be out of the way when the synch relay picks up.
• The synch relay hardware identifications are:
• L25 – synch relay, k3
L25X – synch check relay, k2
L25P – synch relay, k1

Solution

• If L25X is not picking up, Check the "CSP" sequencing: verify that the L25X_PERM coil is being driven with correct
logic. L25X_PERM must be true before L25X will pick up. It is also required that the turbine speed be simulated if not
doing an actual startup. If L25X is picking up slow (as opposed to not picking up), then check the system parameters:
what is the configured phase for L25X? What is the breaker close time? What is the slip when the breaker is being
closed? Are these set correctly?

1-54 Mark* Ve Control, Volume II

3005-3007
Description TCEA[ ] Synch lockup, 25 relay failure

Possible Cause

• The synch check relay, L25 is picked up when it is not supposed to be.
• The synch relay hardware identifications are:
• L25 – synch relay, k3
L25X – synch check relay, k2
L25P – synch relay, k1

Solution

• If reported by all three processors, suspect the trip board TCT_. Otherwise, suspect the detection circuit and check
cable JL, TCEA, and TCT_.

• Proper identification of the failed card may require removal of 2of the 3 JL cables and verification of operation of the
remaining circuit, rotating through the cards until all failures are identified.

3008-3010
Description TCEA[ ] Breaker 1 close time out of limits

Possible Cause

• The measured time for breaker #1 to close on the last synch operation was outside of the limits as defined by the following
eqn: [(Config Bkr close time) - (Config limit)] < [measured bkr close time] < [(Config Bkr close time)+(Config limit)].

Solution

• If reported by all three processors, suspect the generator breaker contact (required interconnection) to the PTBA
termination board, or cabling JM. If this is not the problem, verify that the gen breaker does not have an excessive closure
time and that the configured bkr close time is correct; if still a problem, consider opening up the allowable configured
limit, maybe it is too tight. If only reported by one processor, suspect TCEA or cabling JL.

3011-3013
Description TCEA[ ] Breaker 2 close time out of limits

Possible Cause

Solution

• Check cable J7W on TCT_. If still a problem, suspect trip board TCT_, cable JL, TCEA.

3038-3040
Description TCEA[ ] Voltage missing, 0diag33, 24VR

Possible Cause

• The 24VR voltage is not present (or out of limits) on the TCT_ board

Solution

• Check all three JL cables. If still a problem, suspect trip board TCT_, cable JL, TCEA.

GEH-6729H PIOA I/O Interface Module Application Guide 1-59

3041-3043
Description TCEA[ ] Voltage missing, 0diag34, 115 V ac

Possible Cause

• The 115 V ac voltage is not present (or out of limits) on the TCT_ board. This is applicable to Large Steam only.

Solution

• Check J18 cable. If still a problem, suspect trip board TCT_, cable JL, or TCEA.

3044-3046
Description TCEA[ ] Power supply out of limits, P5

Possible Cause

• The TCEA P5V is out of limits.

Solution

• Replace the TCEA board (or adjust the P5V via R29 on TCEA).

3047-3049
Description TCEA[ ] Power supply out of limits, P15

Possible Cause

• The TCEA P15V is out of limits.

Solution

• Replace the TCEA board.

3050-3052
Description TCEA[ ] Power supply out of limits, N15

Possible Cause

• The TCEA N15V is out of limits.

• Check TCEA Fuse FU4; measure voltage across it, if not zero then replace it. If still a problem, check for a wiring
problem external (PTBA screws 65 and 66). If still a problem replace TCEA.

3059-3061
Description TCEA[ ] Ground fault on P24AS/N24AS Bus

Possible Cause

• The TCEA aux supply, P24A, has a ground fault.

Solution

• Check for a ground fault on the external wiring (PTBA screws 65 and 66). If still a problem replace TCEA.

Note On Gas turbine applications with a GE/Reuter-Stokes flame detector interface module, interchanging the isolated P24
with the control power wired to the interface module will result in this condition. Correct wiring such that the isolated P24
supplies the power for the transducers and the control power for direct interface with the control panel are kept separate.

3062-3064
Description TCEA[ ] Power supply out of limits, P335

Possible Cause

• The TCEA P335 is out of limits.

Solution

Solution

Solution

• Replace TCEA card, then MVRA card and then JD cables. Ensure IONet communications to TCEA are functioning.

GEH-6729H PIOA I/O Interface Module Application Guide 1-63

3110-3112
Description TCDA [ ] Relays dropped due to IONet-485 failure.

Possible Cause

• The TCDA did not hear the digital output packet on the IONet in a timely fashion. This can be caused by a complete
loss of IONet communications (e.g. IONet cable disconnected, IONet master rebooted), or because the IONet master
simply did not send the output packet. Note that with a complete IONet failure, the TCDA will not be able to report
this condition until communications are re-established.

Solution

• If this alarms occurs, but not because of any action on your part (resetting cores, for example) then check for bad or
intermittent cabling on the IONet. Also check for proper IONet termination. As a last resort, you could try replacing
the TCDA and/or IOMA/STCA, but this is not likely to solve the problem. If all else fails, call your local GE service
representative.

3113-3208
Description QD1 Core ContactInputs "Logic Signal [ ] Voting Mismatch",

Possible Cause