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GE EX2100 User Manual

GE EX2100 User Manual

Excitation control
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GEH-6632
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GE Industrial Systems
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EX2100
Excitation Control
User's Guide

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  • Page 1 GEH-6632 GE Industrial Systems ™ EX2100 Excitation Control User’s Guide...
  • Page 3 Document: GEH-6632 Issue Date: 2000-09-30 EX2100 User’s Guide GE Industrial Systems ™ Excitation Control...
  • Page 4 If further information is desired or if particular problems arise that are not covered sufficiently for the purchaser’s purpose, the matter should be referred to GE Industrial Systems, Salem, Virginia, USA.

  • Page 5: Safety Symbol Legend

    Safety Symbol Legend Note Indicates an essential or important procedure, condition, or statement. EX2100 User's Guide GEH-6632 Indicates a procedure, condition, or statement that, if not strictly observed, could result in personal injury or death. Indicates a procedure, condition, or statement that, if not strictly observed, could result in damage to or destruction of equipment.
  • Page 6 To minimize hazard of electrical shock or burn, approved 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. Safety Symbol Legend GEH-6632 EX2100 User’s Guide...

  • Page 7: Reader Comments

    ________________________________________________ ¡ Do not know Comment ____________________________________________ GE Industrial Systems Documentation Design, Rm. 291 1501 Roanoke Blvd. Salem, VA 24153-6492 USA Fax: 1-540-387-8651 (GE Internal DC 8-278-8651) If needed, how can we contact you? Fax No. Phone No. E-mail Address...
  • Page 8 ____________________________ ____________________________ ____________________________ Fold here and close with staple or tape GE Industrial Systems Documentation Design, Rm. 291 1501 Roanoke Blvd. Salem, VA 24153-6492 USA Fold here first Place stamp here.

  • Page 9: Table Of Contents

    Auxiliary Cabinet ... 2-8 Control Cabinet ... 2-10 Exciter Software... 2-17 Operator Interface ... 2-23 EX2100 User’s Guide GEH-6632 Document Distribution... 1-8 Manual Ac Disconnect (Optional) ... 2-5 Power Conversion Module (PCM)... 2-5 Gate Pulse Amplifiers (EGPA Board) ... 2-6 Main Dc Contactors.
  • Page 10 Power Potential Transformer Inputs ... 4-3 Potential and Current Transformer Inputs... 4-3 Analog Input ... 4-3 Exciter AC Feedback ... 4-8 Exciter DC Feedback ... 4-8 Dc Field Flashing Settings ... 4-16 Flashing Control Sequence ... 4-16 GEH-6632 EX2100 User’s Guide...
  • Page 11 Warranty Terms ... A-4 How to Order Parts ... A-5 Appendix B Ratings and Specifications Glossary of Terms Index EX2100 User’s Guide GEH-6632 Changing Display Units... 5-7 Adjusting Display Contrast... 5-7 Reading the Meters ... 5-8 Parameter Backup ... 5-11 Modifying the Protections...
  • Page 12 Notes Contents GEH-6632 EX2100 User’s Guide...

  • Page 13: Introduction

    Chapter 1 Equipment Overview Introduction The EX2100ä Excitation Control (EX2100 or exciter) produces the field excitation current to control generator ac terminal voltage and/or the reactive volt-amperes. It is a full static excitation system designed for generators on both new and retrofit steam, gas, and hydro turbines.

  • Page 14: System Overview

    The architecture supports Ethernet LAN (Unit Data Highway) communication with other GE equipment including the GE Control System Toolbox (toolbox) for configuration, the turbine control, the LCI Static Starter, and the HMI (operator interface).
  • Page 15 Turbine EX2100 Exciter Data Highway to Turbine Control, HMI, & DCS Figure 1-1 Overview of Generator and Exciter System EX2100 User’s Guide GEH-6632 Step-up Transformer Air Circuit Breaker (52G) Current Transformers (CTs) Generator Controlled dc to Field Power Conversion Module (Bridge)
  • Page 16 DC CB or Contactor Shunt Deexcitation Crowbar Diagnostic Unit Control Interface Data Power (Keypad) Highway Supplies Control Control Control Gating Selector Potential Transformer Current Transformer Circuit Breaker I/O: Input/Output PCT: Power Current Transformer PPT: Power Potential Transformer GEH-6632 EX2100 User’s Guide...

  • Page 17: Hardware Overview

    Hardware Overview The EX2100 hardware is contained in three cabinets as follows: The exciter's power converter consists of bridge rectifiers, resistor/capacitor filter configurations, and control circuitry. An outside view of the cabinets is shown in Figure 1-3. The components and bridge size vary for different excitation systems and for the power output required.

  • Page 18: Software Overview

    I/O values of each block can be observed in operation, which is valuable during startup or troubleshooting. Technical Characteristics Summary characteristics for the EX2100 are as follows; for further details refer to Appendix B. EX2100 Characteristics Power Converter Module (PCM)
  • Page 19 Control, and Auxiliary cabinets) Cabinet type, control & auxiliary enclosures Cabinet type, power conversion Power and Control Cable Access EX2100 User’s Guide GEH-6632 3-phase standard, single phase available 120 V ac nominal 1 VA nominal burden Any two phases, single phase available...

  • Page 20: How To Get Help

    GEH-6403 Control System Toolbox for Mark VI Turbine Controller Printed Wiring Board (GEI) publications, refer to Chapter 3. Document Distribution GE Industrial Systems supplies product documents to its customers to support the equipment provided for each requisition. The contract documents define the terms of the document distribution.

  • Page 21: Chapter 2 Functional Description

    Chapter 2 Functional Description Introduction This chapter describes the function of the EX2100 static exciter and the individual control and protection circuits. Power supplies and the distribution of power is also covered. The functional description information is organized as follows: Section Exciter Hardware ...

  • Page 22: Exciter Hardware

    Exciter Hardware The EX2100 exciter consists of the following basic components. Optional components that can be added to the exciter are: The control hardware is basically the same for the different types of excitation. The power conversion hardware is defined by application requirements, which therefore determines the exciter bridge size.

  • Page 23: Exciter Configurations

    Exciter Configurations EX2100 Exciters can be supplied with single or redundant control, and with single or redundant bridges. Variations of the single control type are shown in Figure 2-1. Simplex Control with Single PCM Control with I/O and Operator Keypad Figure 2-1.
  • Page 24 Figure 2-2. Dual Control System Configurations 2-4 Chapter 2 Functional Description Dual Control with Warm Backup PCMs M1 Control, I/O and Operator Keypad M2 Control, I/O and Operator Keypad C Control Selection Logic & Protection Dual Control with Parallel PCMs GEH-6632 EX2100 User’s Guide...

  • Page 25: Power Conversion Cabinet

    41B) to the generator field. The bridge design utilizes dc leg fuses to protect the SCRs from overcurrrent. EX2100 User’s Guide GEH-6632 Limit the rate of change of current through the SCRs and provide a current dump to aid in starting conduction.

  • Page 26: Gate Pulse Amplifiers (Egpa Board)

    2-6 Chapter 2 Functional Description FU1B FU2A FU2B SCR2 Snubber 1 Snubber 2 Snubber 4 Snubber 5 SCR5 FU4B FU5A FU5B Gate Driver Inputs from EGPA Board FU3A FU3B SCR3 Snubber 3 Snubber 6 SCR6 FU6A FU6B GEH-6632 EX2100 User’s Guide...

  • Page 27: Cooling Fan Assembly

    This diode is connected from the generator field negative lead (anode) to the positive lead (cathode). The reverse voltage causes current to flow through the diode, and the field resistance causes the current decay. EX2100 User’s Guide GEH-6632 Chapter 2 Functional Description 2-7...

  • Page 28: Auxiliary Cabinet

    This protects the thyristors from high peak inverse voltages, which may occur as a result of abnormal generator operation. These are typically only supplied on salient pole generators. 2-8 Chapter 2 Functional Description GEH-6632 EX2100 User’s Guide...

  • Page 29: Shaft Voltage Suppressor

    EACF board accepts incoming PPT ac voltage and air core CT current signals. It has transformers to isolate the voltages and produce low level signals. The EDCF board measures the bridge dc current and voltage, and sends it over fiber-optics to the control. EX2100 User’s Guide GEH-6632 Chapter 2 Functional Description 2-9...

  • Page 30: Control Cabinet

    Auto Faults Command Menu Voltage Level Enter Pushbuttons: Organized into functional groups: Navigation buttons for using the menu Exciter Control buttons Run and Stop buttons Exciter Health & State Icons 150% 150% Run (Green) Stop (Red) GEH-6632 EX2100 User’s Guide...

  • Page 31: Control Module

    If the rack contains only the M1 controller then it is a simplex control system; if the rack contains all three controllers then it is a redundant control system. The control and I/O processor boards are as follows: EX2100 User’s Guide GEH-6632 Microprocessor-based Application Control Layer Module (ACLA) controller, with LAN Ethernet port...

  • Page 32: Simplex Control System

    70 V dc De-ex pilot 125 Vdc Gate Pulse Amplifier EGPA To SCRs 125Vdc Field Current & Voltage EDCF PPT and air core CT ac feedbacks EACF EXAM GPA power Coil Power excitation EDEX Optional: Crowbar GEH-6632 EX2100 User’s Guide...

  • Page 33: Redundant Control System

    TRIP TRIP TRIP TRIP ECTB EPSM Power Supply EPBP back plane Field Ground Detector EGDM Figure 2-6. Redundant Control System Cabling EX2100 User’s Guide GEH-6632 Keypad Keypad EBKP Backplane Tool P24V P24V P24V PN24V PN24V PN24V EPSM EPSM Power Power...

  • Page 34: Control Power Supplies

    The EPSMs are fed by 125 V dc from the EPDM, and generate supply voltages of +5 V dc, ±15 V dc, and +24 V dc. In 2-14 Chapter 2 Functional Description Ethernet Data Highway (EGD, Modbus) DSPX DSPX ISBus Serial Modbus ACLA DSPX GEH-6632 EX2100 User’s Guide...
  • Page 35 JDACA1 Filter AC1 Neu. AC2 Hot JDACA2 Filter AC2 Neu. Figure 2-8. Exciter Power Distribution Module EX2100 User’s Guide GEH-6632 P125V 115 Vac DACA #1 JDACA1 115 Vac DACA #2 JDACA2 BJS jumper is supplied for isolation of ground reference...

  • Page 36: Chapter 2 Functional Description

    Power to Exciter Backplane EBKP (Control Rack) To M1 To M2 To C EDEX EDCF CONTROL EDEX J602 EETB ECTB EXTB EDEX EGDM MEDIA CONV CROWBAR EGDM EPSM EGDM Ground Power Ground Detector Supply Detector J1_C GROUND DETECT GEH-6632 EX2100 User’s Guide...

  • Page 37: Exciter Software

    The outputs from these software calculations include the following: EX2100 User’s Guide GEH-6632 Generator voltage magnitude and generator frequency derived from the PTs The magnitude of generator current derived from the CTs...
  • Page 38 Figure 2-10. Control Scheme 2-18 Chapter 2 Functional Description Sensing Exciter Bridge Exciter System Stabilizer Circuits Over-excitation Limiter Under-excitation Limiter V/Hz Limiter & Protection VAR/Power Factor Control Voltage Sensing & Load Compensation Power System Stabilizer Generator GEH-6632 EX2100 User’s Guide...
  • Page 39 Figure 2-11. Software Block Diagram The output of the control software is the firing command, which is sent to the bridge to generate the field current. The individual function blocks are discussed in the following sections. EX2100 User’s Guide GEH-6632 EXASP Exciter AVR Setpoint.

  • Page 40: Auto Reference - Auto Ref

    2-20 Chapter 2 Functional Description Stabilizing signal from the PSS block Output from the AUTOREF block External test signal Protective signal generated by the UEL block Reactive current input (feedback) Voltage magnitude input (feedback) Frequency input (feedback) GEH-6632 EX2100 User’s Guide...

  • Page 41: Manual Reference - Manual Ref

    MANUAL REF block. A PI regulator with integral windup protection generates the output. During operation in AVR mode, the output of the AVR is passed directly to the FVR output with no signal conditioning. On units that operate with an inner field EX2100 User’s Guide GEH-6632 Preset State True Proportional Gain...

  • Page 42: Under Excitation Limiter - Uel

    This comes from the integral of accelerating power, but with shaft torsional signals greatly attenuated. The input signal is derived entirely from generator terminal quantities without the need for shaft speed transducers. No additional external hardware is required. 2-22 Chapter 2 Functional Description GEH-6632 EX2100 User’s Guide...

  • Page 43: Operator Interface

    The toolbox software runs on an HMI server or a separate PC on the UDH. Direct connection to the controller DSPX board is also possible through the Tool port on the control rack backplane. EX2100 User’s Guide GEH-6632 ® based with CIMPLICITY operator display...
  • Page 44 Notes 2-24 Chapter 2 Functional Description GEH-6632 EX2100 User’s Guide...

  • Page 45: Chapter 3 Printed Wiring Boards Overview

    Chapter 3 Printed Wiring Boards Overview Introduction This chapter describes the EX2100 printed wiring boards and their operation. These boards fall into four functional groups; control rack boards including controller boards and I/O processors, I/O terminal boards, bridge control and protection modules, and power supply boards.

  • Page 46: Control Boards

    IS200EMIO Exciter Main I/O board (EMIO) IS200ESEL Exciter Selector board (ESEL) Field Voltage Regulator (FVR) Field Current Regulator (FCR) SCR gating signals to the ESEL board Start-stop function Field flashing control Alarms and trip logic Generator instrumentation processing Generator simulator GEH-6632 EX2100 User’s Guide...
  • Page 47 J404 Test Rings M1 M1-Fan Pwr J502 J504 J602 Power IS200EBKPG1AAA Figure 3-1. Control Module EX2100 User’s Guide GEH-6632 DSPX ACLA EMIO ESEL ESEL EMIO EISB Keypad Tool M2 J405 J406 J407 J408 J409 Test Rings M2 Test Rings C...

  • Page 48: Acla Board

    M1, M2, and C control modules. ISBus is a proprietary, high-speed communication optic communication in the bus used in many GE systems. The EISB is used to provide communication among cabinets. the 3 DSPSs in M1, M2, and C. EISB receives and transmits fiber-optic feedback signals through the backplane connector.

  • Page 49: I/O Terminal Boards

    Type of Redundancy Redundant control Redundant control Simplex control Simplex control EX2100 User’s Guide GEH-6632 IS200EPCT Exciter PT/CT board (EPCT) IS200ECTB Exciter Contact Terminal Board (ECTB) IS200EXTB Exciter Terminal Board (EXTB) IS200EDCF Exciter Dc Feedback board (EDCF) IS200EACF Exciter Ac Feedback board (EACF)

  • Page 50: Edcf Board

    These cables can be up to 90 m in length. There are two versions of this board, EACFG1 is for inputs up to 480 V rms, and EACFG2 is for inputs up to 1000 V rms. For more information refer to Chapter 4 and GEI-100465. 3-6 Chapter 3 Printed Wiring Boards Overview GEH-6632 EX2100 User’s Guide...

  • Page 51: Bridge And Protection Boards And Modules

    EXAM, the attenuator module located in the Auxiliary Panel, senses the voltage across the ground resistor and sends the signal to the EGDM through a nine-conductor cable. EX2100 User’s Guide GEH-6632 IS200EGPA Exciter Gate Pulse Amplifier board (EGPA) IS200EXCS Conduction Sensor board (EXCS)

  • Page 52: Exam Module

    C. A single cable carries the control and sense signals between the EGDM and EXAM modules. For more information refer to Chapter 4 and GEI-100467. 3-8 Chapter 3 Printed Wiring Boards Overview GEH-6632 EX2100 User’s Guide...

  • Page 53: Power Supply Boards

    The EPSM supplies +5 V dc, ±15 V dc, and +24 V dc to the controller. Power is also supplied to modules external to the control rack as follows: For more information refer to Chapter 4 and GEI-100462. EX2100 User’s Guide GEH-6632 IS200EPDM Exciter Power Distribution Module (EPDM) IS200EPBP Exciter Power Backplane (EPBP)

  • Page 54: Daca - Ac To Dc Converter

    CROW CONV EPSM EGDM EPSM IS200EPBPG1 J1_M2 BARCODE EDEX EDCF CONTROL EDEX J15M2 J15C J602 EETB J14M2 J14C ECTB J13M2 J13C J21C EXTB J12M2 J12C EDEX EGDM MEDIA CONV CROW EGDM EPSM EGDM GROUND J1_C DETECT GEH-6632 EX2100 User’s Guide...

  • Page 55: Related Board Publications

    Related Board Publications For a more detailed description of each board's circuitry and application data, refer to the following documents: EX2100 User’s Guide GEH-6632 GEI-100460 IS200EBKP Exciter Backplane GEI-100267 IS200DSPX Digital Signal Processor Board GEI-100434 IS215ACLAH1 Application Control Layer Board...
  • Page 56 Notes 3-12 Chapter 3 Printed Wiring Boards Overview GEH-6632 EX2100 User’s Guide...

  • Page 57: Chapter 4 Terminal Board I/O And Equipment Connections

    Field Flashing ... 4-16 Shaft Voltage Suppressor... 4-18 Data Highway Connections ... 4-19 Control System Toolbox Connection... 4-20 EX2100 User’s Guide GEH-6632 Power Potential Transformer Inputs ... 4-3 Potential and Current Transformer Inputs ... 4-3 Analog Input ... 4-3 Exciter AC Feedback ... 4-8 Exciter DC Feedback ...

  • Page 58: Power Connections And Analog I/O

    4-2 Chapter 4 Terminal Board I/O and Equipment Connections To Bridge 1 Control Cabinet PTSW1 PTSW2 CTSW1 CTSW3 41AC1 Power Conversion Cabinet Note: Circuits shown external to the exciter are for reference only. EMIO (M1) EMIO (M2) EMIO EPCT Bridge 1 GEH-6632 EX2100 User’s Guide...

  • Page 59: Power Potential Transformer Inputs

    Power Potential Transformer Inputs In the EX2100 excitation system, a 3-phase source of ac power is converted to a controlled dc output. This ac input can be from one of several sources. Most common is a generator terminal connected Y-Delta power potential transformer. The primary and secondary voltages as well as kVA ratings are sized for the particular application.

  • Page 60: Customer Contact I/O

    125 V dc nominal (24 V dc min) Resistive load Inductive External suppression supplied by customer on induction loads 28 V dc 0.5 A 125 V dc 28 V dc 0.007 s (L/R) 0.1 A 125 V dc 0.007 s (L/R) GEH-6632 EX2100 User’s Guide...
  • Page 61 From M1 P24M1 P24D J405 From M1 (EMIO) To Optocoupler on M1 (EMIO) Figure 4-2. Customer I/O wired to ECTBG2 Simplex Board EX2100 User’s Guide GEH-6632 ECTBG2 (Simplex) P24D Relay Coil Driver K#GP Four General Purpose Relay Outputs as Above...

  • Page 62: Power Supply Inputs

    EPDM Exciter Power Distribution Module N125Vdc 125 V dc N125Vdc from battery N125Vdc 115 V ac supply #1 115 V ac AC2N supply #2 AC2N SPARE J1M2 J1M1 P125Vdc P125Vdc P125Vdc AC1H AC1H AC1N AC1N AC2H AC2H JDACA1 JDACA2 GEH-6632 EX2100 User’s Guide...

  • Page 63: Line Filter Connections

    Connections to the line filter are shown in Figure 4- From PPT L1 L2 L3 DISC 1 LFU2 LFU1 B-L1 B-L2 B-L3 Figure 4-4. EX2100 User’s Guide GEH-6632 Auxiliary Enclosure Linefilter Coil1_H Coil1_L Coil2_H Coil2_L 480V : 1.6V GND on Aux Panel...

  • Page 64: Exciter Internal I/O

    + 15 V dc & Power Supplies - 15 V dc + 5 V dc Shunt Field Current Amplifier input I feedbk V feedbk Field Voltage Amplifier SCR Bridge ACOMH Field scale 7 scale 1 Stab-on ACOMH GEH-6632 EX2100 User’s Guide Shunt...
  • Page 65 (VCO). The VCO produces a linear proportional frequency of 0 to 2 MHz with an accuracy of 1% of full-scale reading. The pulses drive the LED in the optical isolator coupled to the fiber-optic cable. EX2100 User’s Guide GEH-6632 Chapter 4 Terminal Board I/O and Equipment Connections 4-9...
  • Page 66 K41_M2 K41_C K41_C K41_M1 N125 Feedback Return Shunt To Bridge 2 Generator Field + Auxiliary Cabinet HS + De-Excit. FDI-1 Field 53B (W) Flash 53B (Y) Shaft TB1-1 Voltage TB1-2 Generator Field - To Bridge 2 GEH-6632 EX2100 User’s Guide...

  • Page 67: De-Excitation

    De-Excitation During shutdown of the generator, the stored energy of the generator field inductance must be dissipated. In the EX2100 exciter, this is the function of the EDEX de-excitation module and field discharge resistor or inductor (when supplied). Standard de-excitation is provided by a freewheeling diode. For higher performance applications, the de-excitation module consists of a thyristor (53 mm or 77 mm cell size) mounted in a large heatsink assembly with attached snubber network.
  • Page 68 Status P70V P24V P24V 41 Trip Relays not present on G1 and G2 boards M1 M2 41 Close P125 KDEP N125 J12M2 Converter Cabinet J505 J508 J515 Status Feedback 70V Ret Bkr. Ct. N125 P70Vdc J12M1 GEH-6632 EX2100 User’s Guide...
  • Page 69 Command N24V To EPBP To EPBP J17M1 J17M2 Figure 4-8. Ac or Dc Breaker Control and Wiring to De-Excitation Board EX2100 User’s Guide GEH-6632 Control Cabinet EXTB G3 - Breaker Mode Generator (Simplex version is G4) Field - EDEX Status...

  • Page 70: Crowbar

    M2 channel takes over, as commanded by controller C. One or three EGDMs are mounted next to the power supplies in the power backplane. 4-14 Chapter 4 Terminal Board I/O and Equipment Connections GEH-6632 EX2100 User’s Guide...
  • Page 71 Auxiliary Cabinet Generator Field + From Flashing Ground Detector Attenuator Module EXAM Ground Detector Voltage Figure 4-9. Field Ground Detector EX2100 User’s Guide GEH-6632 Control Cabinet Generator Field - Power Backplane EPBP EGDM - M1 Oscillator 1 Oscillator 2 Control...

  • Page 72: Field Flashing

    10% AFNL, the sequence is repeated. If the current magnitude exceeds approximately 25% AFNL, or the control has not taken over after a fixed time delay, the startup is stopped and a diagnostic alarm is issued. 4-16 Chapter 4 Terminal Board I/O and Equipment Connections GEH-6632 EX2100 User’s Guide...
  • Page 73 From Shunt1 + Station Battery 125 Vdc Auxiliary Panel Flashing Figure 4-10. Field Flashing Control from EMIO and EXTB EX2100 User’s Guide GEH-6632 Generator Field - PTB-1 EXAM FBK1 EXTB Current Circuit Current Chapter 4 Terminal Board I/O and Equipment Connections 4-17...

  • Page 74: Shaft Voltage Suppressor

    Shaft Voltage Suppressor TB1-1 Thyrite Crowbar Heatsink EPL1 EPL2 Figure 4-11 Shaft Voltage Suppressor, Thyrite, and Crowbar 4-18 Chapter 4 Terminal Board I/O and Equipment Connections TB1-3 Field J1-1 Flashing J1-2 DEPL Generator Field - TB1-2 CBRO GEH-6632 EX2100 User’s Guide...

  • Page 75: Data Highway Connections

    Data Highway Connections The EX2100 exciter communicates over the same data highway as the Mark VI The Data Highway integrates turbine control and the HMI. A typical exciter connection to the redundant Unit Data several different single Highway (UDH) network is shown in Figure 4-12. This shows redundant control control systems.

  • Page 76: Control System Toolbox Connection

    J508 J602 DSPX ACLA DSPX EISB EISB EMIO J309 J314 J315 Key Pad Key Pad J409 J414 J415 Tool M2 Tool C Test Rings M2 Test Rings C J509 J514 J515 J610 J612 Power Powr IS200EBKP GEH-6632 EX2100 User’s Guide...

  • Page 77: Chapter 5 Diagnostic Interface-Keypad

    Viewing and Resetting Faults ... 5-9 Editing Parameters ... 5-10 Firmware and Hardware Information... 5-13 Protecting the Keypad... 5-14 EX2100 User’s Guide GEH-6632 Monitor frequency, current, power, and voltage Start and stop the exciter Set and adjust configuration parameters Examine and reset fault conditions Changing Display Units...

  • Page 78: Using The Pushbuttons

    Command Menu Voltage Level Enter Pushbuttons: Organized into functional groups: Navigation buttons for using the menu Exciter Control buttons Run and Stop buttons Exciter Health & State Icons 100% 150% 100% 150% Run (Green) Stop (Red) GEH-6632 EX2100 User’s Guide...

  • Page 79: Button Function

    Menu Navigation: Displays the next level up in menu tree. Escape Entry of Parameter: Displays the parameter list. Menu Navigation: Displays the next level down in menu tree. Enter Entry of Parameter: Accepts editing of parameter. EX2100 User’s Guide GEH-6632 Chapter 5 Diagnostic Interface-Keypad 5-3...
  • Page 80 Faults Command Quick access to a list of commonly used commands Menu Selects Auto mode (AC regulator or AVR) Auto Selects Manual mode (DC regulator or FVR) Increase voltage, VARS, PF Decrease voltage, VARS, PF Stop GEH-6632 EX2100 User’s Guide...

  • Page 81: Reading The Display

    They indicate if the exciter is functioning correctly and show its running state. These icons are displayed in five functional groups, as shown below. You can change the display units and adjust the display contrast, if needed. EX2100 User’s Guide GEH-6632 Animated Meters...

  • Page 82: Icon Indication

    Displayed when an alarm condition occurs. Displayed when a fault state occurs. Exciter is stopped. Exciter is running. Field voltage regulator output is greater than field current regulator or V/Hz or UEL limits are active. Exciter is offline. Exciter is online. GEH-6632 EX2100 User’s Guide...

  • Page 83: Changing Display Units

    Menu key. Press the Up and Down arrows to adjust the display contrast. This displays the following screen. EX2100 User’s Guide GEH-6632 From the Main Menu, select General Setup. Select Display Units. Select the display units parameter to edit it (see below).

  • Page 84: Status Screen

    Range Percentage of dc per unit volts (VDC_PU) Percentage of source top-rated current (I_PU) = True ¡ = False Display I/O Status 1 2 3 4 5 6 GP Inputs GP Outputs Units in Bar Graph GEH-6632 EX2100 User’s Guide...

  • Page 85: Using The Menus

    Refer to GEH-6633 Troubleshooting, Preventive and Online Maintenance, for a list of faults. EX2100 User’s Guide GEH-6632 If already in a Menu screen, press the Menu button. If in a Status screen, press the Menu button once or twice.

  • Page 86: Editing Parameters

    Numeric parameters lists valid digits that you select to create a number. From an exciter Parameters screen, select the parameter that is to be changed. Parameters GPT_Vrms <No Value> VHiTripLev AFFL Trip enabled TripVHiTrip VFFL 100.0 GEH-6632 EX2100 User’s Guide...

  • Page 87: Parameter Backup

    Each new backup overwrites the previous backup copy, which cannot be restored. EX2100 User’s Guide GEH-6632 For an Option parameter: Use the Up or Down Arrow buttons to select a new parameter value. Press the Enter button to accept the change or Escape to exit and keep the present value.
  • Page 88 Backup value = 100.0 VFFL = 110.0 Backup value = 100.0 <More Use the Up and Down Arrow buttons to scroll through the list of backup differences. Press Escape to return to the previous menu. > > GEH-6632 EX2100 User’s Guide...

  • Page 89: Firmware And Hardware Information

    From the Main Menu select: The following screen displays: Ø To view exciter hardware information From the Main Menu select: The following screen displays: EX2100 User’s Guide GEH-6632 General Setup Firmware Version & Hardware Info Display Firmware Version GE Generator Control...

  • Page 90: Protecting The Keypad

    Configure & Operate enables both the Exciter Control and the Configuration functions. This is the default setting. Incorrect password! Press Any Key to Continue From the Main Menu, select: General Setup Keypad Keypad Security Press ENTER to accept, ESC to leave Enter Password: 00000 GEH-6632 EX2100 User’s Guide...
  • Page 91 That causes the Compare Current Parameters to Backup to identify the Keypad Password parameter as different. EX2100 User’s Guide GEH-6632 Enter the password as follows: Use the Up and Down Arrow buttons to index through the valid digits (0 through 9).
  • Page 92 Notes 5-16 Chapter 5 Diagnostic Interface-Keypad GEH-6632 EX2100 User’s Guide...
  • Page 93 Appendix A Warranty and Renewal Parts Introduction When ordering a replacement part for a GE exciter, the customer needs to know: This information helps ensure that GE can process the order accurately and as soon as possible. To minimize system downtime if repair is needed, GE recommends that the customer keep a set of spare parts on hand.

  • Page 94: A-2 Appendix A Warranty And Renewal Parts

    Figure A-4) to correctly identify the system: Part Number Structure A GE part number is structured so that different portions of the number identify the type of equipment and location of manufacture. A part falls into one of four categories: These categories and the makeup of their part numbers are defined under Order Specific Assemblies.
  • Page 95 Common Assemblies Common assemblies are subassemblies used as components of order-specific assemblies. Common assemblies are not designed for a particular exciter, but provide a function used in other GE products. For example, 36C774524AAG48 is the part number for a cable. Components Components are the basic parts that make up assemblies.

  • Page 96: Warranty Terms

    PROM) Sample Board Part Number Warranty Terms The GE Terms and Conditions brochure details product warranty information, including warranty period and parts and service coverage. The brochure is included with customer documentation. It may be obtained separately from the nearest GE Sales Office or authorized GE Sales Representative.

  • Page 97: How To Order Parts

    GE for assistance. ML Number Each GE lineup, cabinet (panel)/case, and core unit has a unique identifying catalog number, also called the part or material list (ML) number. This number is structured to provide information about that equipment. The catalog number links the equipment to its requisition, drawings, components, materials, specification item, and shipping documents.
  • Page 98 Notes A-6 Appendix A Warranty and Renewal Parts GEH-6632 EX2100 User’s Guide...

  • Page 99: Appendix B Ratings And Specifications

    Control power (redundant with 2 bridges, warm backup} Heat loss in single PCM cabinet EX2100 User’s Guide GEH-6632 The actual equipment rating is on your exciter nameplate. This appendix indicates the range of possible product offerings but not necessarily the capability of your exciter.
  • Page 100 72 hours at 0.3 G rms between 4 to 16 Hz 3 shocks of 15 G, 2 ms impulse for all three axes 1.0 G Horizontal, 0.5 G vertical at 15 to 150 Hz Sulfuric Acid GEH-6632 EX2100 User’s Guide...
  • Page 101 IEEE 421.5 EN50178/LVD/EMC IEEE C57.12.01 IEEE C57.110 IEEE C57.116 IEEE C37.90.1 IEEE C57.18.10 EX2100 User’s Guide GEH-6632 Width 141.74 in (3600 mm) Height 104.32 in (2650 mm) Depth 31.5 in (800 mm) 3,600 lbs. 5,600 lbs. NEMA 1 (IEC IP 20), convection cooled...
  • Page 102 Notes B-4 Appendix B Ratings and Specifications GEH-6632 EX2100 User’s Guide...

  • Page 103: Glossary Of Terms

    Basic input/output system. Performs the controller boot-up, which includes hardware self-tests and the file system loader. Binary Digit. The smallest unit of memory used to store only one piece of information with two states, such as One/Zero or On/Off. EX2100 User’s Guide GEH-6632 Glossary of Terms...

  • Page 104: Com Port

    (loss of synchronism) event. It includes a discharge resistor, and is self firing. Current Transformer, used to measure current in an ac power cable. DACA Ac to dc converter for power supply, produces 125 V dc. Glossary of Terms GEH-6632 EX2100 User’s Guide...
  • Page 105 Basis for TCP/IP and I/O services layers that conform to the IEEE 802.3 standard. EX2100 Exciter GE static exciter; regulates the generator field current to control the generator output voltage. fanned input A termination board input that is connected to all three redundant controllers.

  • Page 106: Fault Code

    A term that defines whether a signal is functioning as expected. heartbeat A signal emitted at regular intervals by software to demonstrate that it is still active. Human Machine Interface, usually a PC running Windows NT and CIMPLICITY HMI software. Glossary of Terms GEH-6632 EX2100 User’s Guide...

  • Page 107: Hot Backup

    A statement of a true sense, such as a Boolean. Mark VI turbine controller A control system hosted in one or more VME racks that performs turbine-specific speed control, logic, and sequencing. EX2100 User’s Guide GEH-6632 Glossary of Terms...
  • Page 108 A PPT is attached to the generator terminals to provide three-phase power for the exciter; referred to as a potential source. power system stabilizer (PSS) PSS software produces a damping torque on the generator to reduce generator oscillations. Glossary of Terms GEH-6632 EX2100 User’s Guide...

  • Page 109: Runtime Errors

    Resistance Temperature Device, used for measuring temperature. runtime See product code. runtime errors Controller problems indicated on the front panel by coded flashing LEDS, and also in the Log View of the toolbox. EX2100 User’s Guide GEH-6632 Glossary of Terms...
  • Page 110 UNIX standard, but is supported on almost all systems. TCP controls data transfer and IP provides the routing for functions. Triple Modular Redundancy. An operation that uses three sets of control and I/O (channels M1, M2, and C) and votes the results. viii Glossary of Terms GEH-6632 EX2100 User’s Guide...

  • Page 111: Windows Nt

    A Windows NT -based software package used to configure the EX2100 and Mark VI turbine controller. under-excitation limit (UEL) UEL software functions to prevent generator over-heating caused by under excitation. unit data highway (UDH) Connects the EX2100, Mark VI turbine controllers, LCI, PLCs, and other GE provided equipment to the HMI Servers;...
  • Page 112 Notes Glossary of Terms GEH-6632 EX2100 User’s Guide...

  • Page 113: Index

    EXAM 2-1, 2-9, 2-15, 3-1, 3-7 – 3-10 EXCS 3-1, 3-7 Bridge Rectifier 2-5 Cabinet Dimensions & Weight 1-7, B-3 EX2100 User’s Guide GEH-6632 Cell Snubbers 2-5 communication 1-2, 1-5, 2-11, 2-13, 3-4, 4-19, 4-20, Compound power source 2-2 contact input 1-7, 3-4 – 3-6, 4-4, B-2 contact output 1-7, 3-5, 3-6, 4-4, B-2 control 1-1, 1-2, 1-5 –...
  • Page 114 Field Ground Detector Module 2-1, 2-9, 2-15, 3-1, 3-4, 3-7 – 3-11, 4-14 Field Voltage Feedback 4-9 Field Voltage Regulator 2-1, 2-20, 2-21, 3-2, 5-4, 5-8 Flashing Control 4-1, 4-16 Free Wheeling Diode 2-1, 2-7 FVR (see Field Voltage Regulator) GEH-6632 EX2100 User’s Guide...
  • Page 115 ACLA 1-6, 2-11, 2-13, 2-14, 3-1, 3-2, 3-4, 4-19, 4-20 DSPX 1-6, 2-11, 3-1, 3-2, 3-4, 3-8, 4-14, 4-20, 5-13 Multibridge configuration 2-2 EX2100 User’s Guide GEH-6632 operator interface 1-2, 2-10 PCM (see Power Conversion Module) Potential transformers 1-7, B-2...
  • Page 116 Triple Modular Redundant 2-2, 2-14 UDH (see Unit Data Highway) UEL (see Under Excitation Limiter) Under Excitation Limiter 2-1, B-2 Unit Data Highway 1-2, 4-19 Warm backup bridge configuration 2-2 Warranty and Renewal Parts 1-1, A-1 Index GEH-6632 EX2100 User’s Guide...
  • Page 118 *( ,QGXVWULDO 6\VWHPV Brr…hyÃ@yrp‡…vpÃ8‚€ƒh’...

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