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GE EX2100 Network Router User Manual

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2. 24Vdc from External gt 24V Source i j i o DC AC ACIDC Convert tini O onverter i 2 gt 24V lo Inverter amp Power Supplies Ro E 15Vdc ave yo gt 5 Vdc E SCR Bridge I N COM as a 30 Vdc p St max I DI n E Field Current Shunt Li mV Amplifier input To feedbk Tx1 k EISB Fiber Optic Link board TX2 V feedbk z Field Voltage Seale Amplifier Voltage Isolation Barrier 4 8 e Chapter 4 Terminal Board I O and Equipment Connections L Figure 4 5 Field Voltage and Current Measurement GEH 6632 EX2100 User s Guide EX2100 User s Guide GEH 6632 Field Current Feedback The field current is measured across a dc shunt at the SCR bridge This generates a nominal 100 mV signal which 1s input to a differential amplifier The output voltage from the amplifier ranges from 5 V to 5 V A VCO produces a linear proportional frequency of 0 to 2 MHz with an accuracy of 1 of full scale reading These pulses drive the LED in the optical isolator coupled to the fiber optic cable Field Voltage Feedback The bridge voltage is measured across the negative terminal of the bridge and the positive terminal of the current shunt After scaling the voltage with the jumpered resistors the
3. 4 3 4 3 J En C J414 J415 gt J514 J515 Figure 3 1 Control Module EX2100 User s Guide GEH 6632 Chapter 3 Printed Wiring Boards Overview 3 3 ACLA handles network communications and outer loop functions EISB manages all the fiber optic communication in the cabinets ACLA Board The ACLA board is a double slot 3U high module located next to the DSPX ACLA provides Ethernet communications with the turbine control LCI and HMI and runs outer loop control functions including the following e Automatic Voltage Regulator AVR e Power System Stabilizer PSS e Under Excitation Limit control UEL e VAR power factor regulator VAR PF For more information refer to Chapter 4 and GEI 100434 EISB Board The Exciter ISBus Board EISB is a special communication interface board for the M1 M2 and C control modules ISBus is a proprietary high speed communication bus used in many GE systems The EISB is used to provide communication among the 3 DSPSs in MI M2 and C EISB receives and transmits fiber optic feedback signals through the backplane connector It transmits them over the control backplane to the DSPX controller and al
4. Exciter Power Distribution Module EPDM P125V N125V EUA J8A 1 n P125 A To 3 15A 0 y EGPA1 i ED 1 gm y l 4 ow E W To N125 EA EGPA2 a A rana A 115 Vac DACA 1 LL E T pus JDACA 7 JDACA1 N l i ee 053 Ky To rp E EGPA3 10 w t 415 9 9 Vac gt 12 12 1 Si a To AC1 N ES D a x 3 EXTB 115 Vac DACA 2 ASS zl JIMI T Hot JDACA2 7 q BA cli Lee E i i T gt e il J1M2 8A 0 no j gt gt Futo SW5 GN JO 12 12 FU11 J1C 3 E To e _ EPSM3 AC2 Neu sa y 1 PP o ii me BJS jumper is supplied for EX2100 User s Guide GEH 6632 isolation of ground reference gi on systems with external E BJS reference Chassis Ground Figure 2 8 Exciter Power Distribution Module Chapter 2 Functional Description e 2 15 O Exciter Power Distribution Module EPDM 125 V de 115 V ac Supplies Power to Exciter Backplane EBKP Control Rack To M1 ToM2 ToC O O M1 EDEXEDCF CON DO bu M EDEX CROWBAR EGDM FAN MEDIA ROL EDEX ___ cala y er M CONV CROWBAR EDEX EDCF CONTROL O poi EDEX cala y ere A EDEX EGDM FAN MEDIA CONV CROWBAR EDEXEDCF CONTROL E dI ecm E jexe DO EDEX EGDM FAN MEDIA CONV EDEX ___ Fan
5. Free Wheeling Diode De excitation De excitation the dissipation of the field current after the dc contactor opens can be done with a free wheeling diode 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 e 2 7 Auxiliary Cabinet The auxiliary cabinet is located next to the power conversion cabinet and contains modules to protect the generator and provide startup de power Modules for filtering the incoming ac power for de excitation shaft voltage suppression and field flashing are mounted in this cabinet Ac Line to Line Filters Fuse protected line to line series RC filter circuits snubbers are provided to damp the ac system to prevent voltage spikes at the completion of SCR commutation There are two styles of filters employed depending on the voltage The 600 V filter uses RC circuits and MOVs The 1000 V filter uses the 600 V version with additional RC circuits Refer to Chapter 4 for details and connections De excitation Module EDEX During any shutdown the energy stored in the generator field must be dissipated In a normal shutdown a stop 1s initiated by an operator The bridge is fired at retard limit and sufficient time 1s allowed for the field to decay before the field contactors are opened
6. 10 Arms 125 V ac single source 125 250 V dc battery source with up to 200 A for at least 10 s 380 480 V ac 50 60 Hz single phase auxiliary source For two ac sources or one ac and one dc source Nominal 120 V ac 15 with 1 DACA 10 A rms max Battery source 125 V dc range 80 140 V dc 10 6 A dc max 10 KW for a 2000 A 1 000 V ac PCM Appendix B Ratings and Specifications e B 1 Input Output Potential transformers PTs Current transformers CTs 1 or 5 A 86G dedicated contact input 52G dedicated contact input Trip rated contact outputs General Purpose contact inputs General Purpose Form C contact outputs 10 V differential amplifier input Control Automatic ac Voltage Regulation Manual dc Voltage regulator Protection Features Environmental Control amp Protection Base controls cabinet Base power bridge and auxiliary cabinet Storage Temperature Humidity Altitude Cooling Contaminants withstand 10 PPB of these Vibration Seismic Shipping Operating Installed at Site B 2 e Appendix B Ratings and Specifications QTY 2 3 phase standard single phase available 120 V ac nominal 1 VA nominal burden 2 Any two phases single phase is available 1 VA nominal burden 1 Open for trip 1 Closed for online 2 At 125 V dc the relay break characteristics are Resistive load 0 5 A Inductive load 0 2 A 6 Customer contact 70 V dc supplied by ECTB 4 At 125 V dc the relay break characteristics are Resisti
7. GE Industrial Systems o A l EX2100 Excitation Control User s Guide GE Industrial Systems Document GEH 6632 Issue Date 2000 09 30 fl EX2100 Excitation Control User s Guide 2000 General Electric Company USA All rights reserved Printed in the United States of America 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 If further information 1s 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 This document contains proprietary information of General Electric Company USA and 1s 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 Industrial
8. 3 6 3 10 3 11 4 4 B 2 Exciter DC Feedback 3 5 3 6 3 11 4 1 4 8 Exciter DC Feedback Board 2 6 2 9 2 13 3 1 3 4 3 6 3 10 3 11 4 8 Exciter Gate Pulse Amplifier Board 2 1 2 5 2 6 2 11 2 14 3 1 3 4 3 5 3 7 3 9 Exciter Internal I O 4 1 4 8 Exciter AC Feedback 3 5 3 7 3 11 4 1 4 7 4 8 Exciter DC Feedback 3 5 3 6 3 11 4 1 4 8 Field Current Feedback 4 9 Field Voltage Feedback 4 9 Exciter ISBus Board 2 11 3 1 3 2 3 4 3 6 3 8 4 8 Exciter Main I O Board 2 11 3 1 3 2 3 4 3 6 4 3 4 4 4 16 4 17 Exciter Power Backplane 2 14 2 16 3 1 3 8 3 9 3 11 Exciter Power Distribution Module 2 14 2 16 3 1 3 7 3 9 3 11 4 6 Exciter Power Supply Module 2 12 2 14 3 1 3 9 3 11 Exciter PT CT Board 2 13 2 Exciter Selector Board 2 6 2 3 5 3 7 Exciter Software Auto Reference 2 1 2 20 Automatic Voltage Regulator 2 1 2 20 2 21 3 4 5 4 AVR Setpoint 2 1 2 20 Field Current Regulator 2 1 2 21 3 2 Field Voltage Regulator 2 1 2 20 2 21 3 2 5 4 5 8 Manual Reference 2 1 2 21 Power System Stabilizer 2 1 2 17 2 20 3 4 Under Excitation Limiter 2 1 2 20 3 4 5 6 B 2 Exciter Terminal Board 2 7 2 14 2 15 3 1 3 4 3 6 3 8 3 11 4 11 4 16 4 17 EXCS see Exciter Conduction Sensor Board EXTB see Exciter Terminal Board 17 3 1 3 4 3 5 4 3 11 3 DALIA F FCR see Field Current Regulator Field Current Feedback 4 9 Field Current Regulator 2 1 2 21 3 2 field flas
9. DSP DO O nares secret a ra oda Na 3 2 ACCA Bird allieta 3 4 ES TO Mi MAMMA lia a cr eni dico i a 3 4 EMIO A A ei sei ad 3 4 ESEL Bo O a a le sai e o VES 3 4 LO Terminal BOATS o nada 3 5 ERC BOA ses mba II elad s dd EE EE Ve 3 5 EC LE A A Sa RA Li ilaele RE 3 5 129 4 Ns boiled a DS 3 5 EDCE BO cis 3 6 EACE BOLO Raina 3 6 Bridge and Protection Boards and Modules iii 3 7 EGPA Bode 3 7 EXC bold 3 7 PIOP Boid nato ETR ao Di A 3 7 EGDNENM Odile planned 3 7 PANE NM dulcis 3 8 Power Supply BOAS hill 3 9 EPON MOGO e s cs e aadli 3 9 EP BP 7216 lt 0 0 ks 111 cane nee nn eee ne eee epi ela 3 9 A A O a t 3 9 DACA Ac to De CONVE ae 3 10 Related Board Publrications alla a 3 11 Chapter 3 Printed Wiring Boards Overview 3 1 Control Boards The DSPX performs most of the I O interface and inner loop bridge control and protection functions The control boards are located in the control module This module consists of the exciter backplane EBKP and the metal chassis that holds the boards refer to Figure 3 1 The control boards are as follows e IS200DSPX Digital Signal Processor control board DSPX e IS215ACLA Application Control Layer Module ACLA e IS200EISB Exciter ISBus Board EISB e IS200EMIO Exciter Main I O board EMIO e IS200ESEL Exciter Selector board ESEL EBKP Backplane The EBKP provides the backplane for the control boards and the connectors for the I O ter
10. EGDM Ground Detector M1 EGDM Ground Detector M2 EGDM Ground Detector C To J1M1 To J1M2 Figure 2 9 Exciter Power Backplane EPBP with EPDM Power Supplies amp Ground Detector Modules 2 16 e Chapter 2 Functional Description To J1C J2C GROUND A detect GEH 6632 EX2100 User s Guide Exciter Software EX2100 User s Guide GEH 6632 The exciter software is configured and loaded from the toolbox and resides in the controllers The software is represented on the toolbox screen by control blocks linked together to show the signal flow Figure 2 10 is a simplified overview of the exciter control system displaying the main control functions Both the generator field and stator currents and voltages are measured and input to the control system In normal operation the ac regulator is selected Figure 2 11 is the simplified software block diagram displaying the main control blocks The generator voltages and currents from the PTs and CTs are wired to the EPCT board which acts as a signal conditioner to isolate and scale the signals The conditioned signals are then fed to the controller Software conversion algorithms use these signals to calculate system variables for use by the regulator limiter and protection functions The outputs from these software calculations include the following e Generato
11. Escape Enter Cs gt We fit Display Pushbuttons Status screens provide analog and digital representation of exciter functions and values Menu screens provide text based access to parameters wizards and faults Organized into functional groups Navigation buttons for using the menu Exciter Control buttons Run and Stop buttons Figure 5 1 Diagnostic Interface Keypad 5 2 Chapter 5 Diagnostic Interface Keypad GEH 6632 EX2100 User s Guide Table 5 1 Navigation Pushbuttons Button Function Lala Displays the default Status Screen which shows eight parameters as numbers or Status bargraphs A set of Health icons displayed at all times see Exciter Health and State La Icons provides additional exciter status information If pressed while displaying a Menu screen see Menu Selections displays the Main Menu Menu lf pressed while displaying a Status screen displays the last Menu screen If held Sai down the up and down arrow keys adjust screen contrast EA Menu Navigation Used to highlight reverse image an item in a menu of options l A Adjust Contrast if menu key is held down ti Entry of Numeric Parameter Used to index through numbers 0 9 when editing a parameter Yy E Entry of Option Parameter Used to index through 1 n choices See Parameter Configuration a gt Menu Navigation Right Arrow button displays the next selected level down in a menu i i tree Lef
12. Status of Regulators Figure 2 12 Automatic Voltage Regulator Block Manual Reference MANUAL REF The MANUAL REF block generates a manual setpoint for the FVR or FCR based on user supplied parameters and conditions Raise Lower inputs to MANUAL REF come in from other control devices on the Data Highway such as the turbine control or HMI Field Voltage and Current Regulators FVR amp FCR The Field Voltage Regulator FVR is the typical manual regulator supplied on most applications and uses the generator field voltage as the feedback input While FVR does permit the current to vary as a function of the field resistance the FVR makes the manual regulator completely independent from the over excitation limiter FVR uses the voltage from the generator field as feedback with a setpoint from the 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 Chapter 2 Functional Description 2 21 voltage regulator loop such as compound exciters and some high ceiling exciters the FVR uses a setpoint from either the AVR or the MANUAL REF block and is always operational whether in manual or automatic operation The Field Current Regulator FCR is a special application of the manual regulator and uses the generator field curre
13. V feedback soy PN P24V ou P24V EDCE PN24V E PN24Y E PN24V E G G G D D D PPT and air core CT EPSM M EPSM M EPSM M AC Feedbacks Power Power Power Supply Supply Supply EACF EDEX De excitation EPBP 125 Vdc back To Power EXAM plane GPA power Attenuator Field Ground 125 V dc Option Optional Crowbar Detector Battery DACA EGDM Rectified ac Figure 2 6 Redundant Control System Cabling EX2100 User s Guide GEH 6632 Chapter 2 Functional Description 2 13 To plant controls Serial Modbus Communication across backplane Redundant supplies provide high reliability Controller C Controller C is only used with redundant systems It is mounted in the control rack and is physically similar to the M1 and M2 controllers however C is not responsible for bridge firing and therefore does not contain an ESEL or ACLA board Controller C receives the same feedback voltage and current inputs as the other controllers and contains similar software Its purpose is to monitor the active and backup controllers M1 or M2 and initiate appropriate protective responses in the event the system conditions exceed the defined regulation boundaries Input and output signal voting takes place in all three controllers which are linked in a Triple Modular Redundant TMR controller configuration Each controller contains up to six boards interconnected through the backplane as shown in the simplified diagram of Fi
14. si O PP J18 a TE pe PEE Terra e bel bel Cperepaen UL Eepe EDEX EGDM FAN MEDIA EDEX EGDM FAN MEDIA EDEX EGDM FAN MEDIA CROW CROW Blank plate J1 M1 IS200EPBPG1 031M2 BARCODE J1_C 00 see Figure 3 2 Exciter Power Backplane DACA Ac to Dc Converter The DACA is an ac to de converter that is powered by a 115 V ac source and produces 125 V dc The DACA and battery source provide a redundant 125 V dc supply for the EPDM Two DACAs can be connected to the EPDM if required for greater power supply reliability 3 10 e Chapter 3 Printed Wiring Boards Overview GEH 6632 EX2100 User s Guide 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 IS215ACLAHI Application Control Layer Board GEI 100454 IS200EISB Exciter ISBus board GEI 100453 IS200EMIO Exciter Main I O board GEI 100456 IS200ESEL Exciter Selector board GEI 100459 IS200EPCT Exciter PT CT board GEI 100457 IS200ECTB Exciter Contact Terminal Board GEI 100458 IS200EXTB Exciter Terminal Board GEI 100464 IS200EDCF Exciter DC Feedback board GEI 100465 IS200EACF Exciter AC Feedback board GEI
15. to the generator field The bridge design utilizes dc leg fuses to protect the SCRs from overcurrrent EX2100 User s Guide GEH 6632 Chapter 2 Functional Description 2 5 EDCF provides dc current and voltage feedback To dc Breaker Shunt and Generator Field Current Shunt A dc shunt provides the bridge output current feedback signal The mV output signal is input to a differential amplifier on the EDCF board The amplifier output voltage controls the frequency of an oscillator which generates a fiber optic signal sent to the control module The bridge output voltage feedback signal is generated in a similar way Ac power Input Snubber 1 Snubber 2 Snubber 3 Snubber 4 Snubber 5 Snubber 6 Jak VN J4 Gen Field J2 V MI J5 J3 N J6 The gate pulse amplifiers directly control the SCRs V Gate Driver Inputs from EGPA Board Figure 2 3 Power Bridge Gate Pulse Amplifiers EGPA Board The EGPA board interfaces the control to the Power Bridge EGPA takes the gate commands from the ESEL board in the controller and generates the gate firing pulses for six SCRs Silicon Controlled Rectifiers It is also the interface for current conduction feedback and bridge airflow and temperature monitoring On a new exciter an RTD is used to monitor the temperature and generate alarms instead of the Klixon switches Additiona
16. 10BaseT lt connections Local Control Area From other Controllers From other Controllers Exciter Control Cabinet Ethernet Port RJ 45 Figure 4 12 Unit Data Highway Connections EX2100 User s Guide GEH 6632 Chapter 4 Terminal Board I O and Equipment Connections 4 19 Control System Toolbox Connection The toolbox connector on the exciter backplane supports an RS 232C cable which connects an external computer to the DSPX board This connection is for maintenance purposes There are three 9 pin connectors located at J303B J310B and J313B to support communication with controllers M1 M2 and C Refer to Figure 4 13 The UDH can also provide a toolbox interface using the Ethernet port on the ACLA This is a 10BaseT port and uses an RJ 45 connector for unshielded twisted pair cable UDH Ethernet Data Highway to Toolbox and HMI 1 000000 000000 000000 m 0 wo m 0 os m 0
17. 4 Power Connections and Analog I O li 4 2 Power Potential Transformer Inputs ra 4 3 Potential and Current Transformer Inputs eeeeeeeeeeeeeerreeees 4 3 Analoe pul A e e ea 4 3 Customer Co e ele dos e da 4 4 Powersupply A e os o 4 6 Line Filter ConncehonS lai 4 7 Exciterinemnal O Oe 4 8 Exeter AC E lla 4 8 Exciter DC Feedback sila 4 8 1ISEKEMA HOME aki itaalias eli lee ea 4 11 CHOW DA assar Set Na E o a sii oliena 4 14 Field Ground Detector italia 4 14 Held Ela ai de bad 4 16 De Rield Plastilina oca eaka 4 16 Plashine Control SCQuence kena miki tammil alia maaalused 4 16 Shalt M OMASE SUP PES OL A AS 4 18 Data EMS hway SOHAECUONS AAA A AO 4 19 Control System Toolbox COMA aaa 4 20 Chapter 5 Diagnostic Interface Keypad 5 1 TOMOU ON OA oo qa hein E aA needa an iota 5 1 Lsinothe Pusnbittonsaaia RARA m da anna 5 2 Readme Lhe Display oso eo aaa sla 5 5 ii e Contents GEH 6632 EX2100 User s Guide Changing Display UNIitS iii Adjusting Display Contrast i SAS OCTO elia Reading the Metas Alternate Status Screen Display I O Usine the Mensili ani Viewing and Resetting Faults iii Edims Pardmeltii rl Parameter Back Firmware and Hardware Information i Protecting the Keypad icc Aw aaa Modifying the Protections Appendix A Warranty
18. Control Module 2 1 2 11 Control power supplies 2 2 Control Power Supplies 2 1 2 14 Control Scheme 2 18 Control System Toolbox 1 2 1 6 1 8 2 2 2 17 4 1 4 20 Connection 4 1 4 20 Controller C 1 2 2 11 2 13 2 14 3 2 3 4 3 5 3 7 3 9 3 11 4 3 4 14 4 20 M1 1 2 2 11 2 13 2 14 3 2 3 4 3 5 3 9 3 11 4 3 4 14 4 20 M2 1 2 2 11 2 13 2 14 3 2 3 4 3 5 3 9 3 11 4 3 4 14 4 20 cooling fans 1 5 2 2 3 9 Crowbar 2 2 3 6 3 7 3 10 3 11 4 1 4 14 4 18 Crowbar module 2 2 3 7 3 11 Current Shunt 2 6 Current transformers 1 7 B 2 Customer Contact I O 4 1 4 4 D DACA see Ac to Dc Converter Data Highway Connections 4 1 4 19 de contactors 1 5 Dc Field Flashing Settings 4 1 4 16 de excitation 1 2 1 5 2 5 2 8 3 4 3 6 3 8 3 11 4 11 4 14 De excitation 2 1 2 2 2 7 2 8 4 11 Index ci De Excitation 3 7 3 11 4 1 4 11 4 13 Crowbar 2 2 3 6 3 7 3 10 3 11 4 1 4 14 4 18 Field Flashing 2 1 2 9 3 2 4 1 4 16 4 17 Field Ground Detector 2 1 2 9 3 7 4 1 4 14 4 15 Shaft Voltage Suppressor 2 1 2 9 4 1 4 18 De excitation module 2 2 2 8 De excitation Module 2 1 2 8 3 1 3 6 3 8 3 10 3 11 4 11 Diagnostic Interface 1 1 2 1 2 2 2 10 5 1 Alternate Status Screen 5 1 5 8 Changing Display 5 1 5 7 Editing Parameters 5 1 5 10 5 15 Faults 5 1 5 9 Keypad 2 10 5 1 Protecting the Keypad 5 1 5 14 Reading the Display 5 1 5 5 5 9 Reading the Meters 5 1 5 8 Sta
19. Data Power Keypad Highway Supplies Customer I O p r CT Current PT Voltage O Bridge I O x AC ACCB Generator UX A AS Source Control Control Control M1 M2 C PPT Compound Source only Linear Gating Selector Reactors 3 do AC CB or Disconnect Line Filter 5 Power Conversion Modules Bridge Flashing Control DC CB or Contactor Active Field Shunt Ground Detector PT Potential Transformer D d CT Current Transformer CB Circuit Breaker I O Input Output Deexcitation gt PCT Power Current Transformer PPT Power Potential Transformer Crowbar Shaft Voltage Suppression gt Figure 1 2 Exciter One Line Diagram 1 4 e Chapter 1 Equipment Overview GEH 6632 EX2100 User s Guide Hardware Overview The EX2100 hardware is contained in three cabinets as follows e control cabinet for the control communication and I O boards e auxiliary cabinet for field flashing and protection circuits such as de excitation and shaft voltage suppression e power conversion cabinet for the power SCR cells cooling fans de contactors and ac disconnect 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 Contr
20. L2 nd DISC 1 O O Q a A El LFU2 IME y 480V 1 6V i li GND To Warm Lidia Backup Bridge B2 GND on f Aux Panel Bla T BA de dll do o AK A AAA Figure 4 4 AC Feedback and Line Filters EX2100 User s Guide GEH 6632 Chapter 4 Terminal Board I O and Equipment Connections e 4 7 Exciter Internal I O Exciter AC Feedback The EACF board measures the exciter ac supply voltage and current The terminal board contains transformers for a 3 phase voltage measurement and terminals for two flux air core coils The cable between EACF and the EBKP control backplane can be up to 90 m in length Cable shield terminal screws attached to chassis ground are located within three inches of the input screws where applicable There are two versions of the circuit board EACFGI for up to 480 V rms inputs and EACFG2 for up to 1000 V rms inputs Refer to Figure 4 4 Exciter DC Feedback The EDCF board measures field current and field voltage at the SCR bridge and interfaces to the EISB board in the controller over a high speed fiber optic link The fiber optics provides voltage isolation between the two boards and high noise immunity For a circuit block diagram refer to Figure 4 5 The field voltage feedback circuit provides seven selector settings to scale down the bridge voltages appropriate to the application EDCF DC Feedback Board
21. M2 and C controllers It also holds three EGDM EPBP accepts 125 V dc from the adjacent EPDM and distributes logic level power from the three EPSM to the three controllers Each power supply has an independent ON OFF switch on the EPDM The EPSM modules interface to the backplane through DIN connectors 70 V dc and 24 V dc power 1s distributed from the locking connectors at the top of the backplane to the terminal boards Refer to Figure 3 2 For more information refer to Chapter 4 and GEI 100463 EPSM Module The EPSM converts 125 V dc from the EPDM into the voltages required for the control system There are three independent power supplies that supply power to each of the controllers M1 M2 and C These supplies are located in the power supply module mounted below the control rack in the control cabinet 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 e 24Vdcto power the EDEX de excitation module crowbar module EGDM and EDCF e Isolated 70 V dc for contact wetting to the EXTB and ECTB boards For more information refer to Chapter 4 and GEI 100462 Chapter 3 Printed Wiring Boards Overview 3 9 M1 o M2 C EDEX EDCF CONTROL EDEXEDCF CONTROL EDEXEDCF CONTROL KH FA A EDEX AS 15M1 317 GA EDEX HSA 15M2 EDEX J15 J15C ma lst deog ap H a ma E ana O EETB 41401 Cy EETB y14m2 EETB 4146 J19 M1 M1 E LI
22. Mode Simplex version is G4 De Excitation Generator Generator Field Field Customer Breaker Conduction Sense Circuit M1 De 139 Exc Status M2 De fg Exc Status Self Firin M2 Firing Command M1 Firing N24V P24V Command Y N24V P24 4 P24 1 1 gt gt 41 ClosejN COM gt 2 COM P125 N24 3 N24 ToEPBP To EPBP J17M1 J17M2 P70VM2 Figure 4 8 Ac or Dc Breaker Control and Wiring to De Excitation Board EX2100 User s Guide GEH 6632 Chapter 4 Terminal Board I O and Equipment Connections 4 13 Crowbar The optional crowbar subsystem limits high negative voltages that can be induced into the PCM during a pole slip loss of synchronization event Like the de excitation module the crowbar will self fire based on selective field voltage limits It includes a discharge resistor which may be shared with the de excitation function when the two are supplied together This is typically only provided on generators with salient poles hydro applications Field Ground Detector The EGDM is an active The generator field is an ungrounded system The field ground detector EGDM system that applies a voltage detects field leakage resistance between any point in the field circuit of the generator to the field circuit and ground The active detection system s
23. Systems Document Identification GEH 6632 EX2100 is a trademark of General Electric Company USA Cimplicity is a registered trademark of GE Fanuc Automation North America Inc Ethernet is a trademark of Xerox Corporation Mate N Lok is a registered trademark of Amp Incorporated Windows NT is a registered trademark of Microsoft Corporation 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 Note Indicates an essential or important procedure condition or statement EX2100 User s Guide GEH 6632 Safety Symbol Legend a This equipment contains a potential hazard of electric shock or burn 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 grounding practices and procedures must be strictly followed To prevent personal injury or equipment damage caused
24. Terminal Board I O and Equipment Connections GEH 6632 EX2100 User s Guide A redundant PT input for PT failure detection is possible and single phase sensing can be supported Item Number of Inputs Volts or Current Frequency Burden EX2100 User s Guide GEH 6632 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 An auxiliary bus fed PPT is also commonly used In industrial applications where forcing is needed for large motor starting a compound source current and voltage input can be used This ac input is connected to the bus in the bridge cabinet and can be isolated by the 41 AC1 device for maintenance It is monitored by the controls through the EACF board Potential and Current Transformer Inputs Customer supplied 3 phase PT and CT are wired to switches in the control cabinet as shown in Figure 4 1 The switches are wired to the EPCT High frequency noise suppression near the point of signal entry is provided on all input signals to EPCT On the board the two 3 phase generator voltage inputs nominal 115 V ac are brought into PT transformers Two generator CTs phases A and C with either 1 A or 5 A secon
25. by equipment malfunction only adequately trained personnel should modify any programmable machine Warning b e Safety Symbol Legend GEH 6632 EX2100 User s Guide To ES GE Industrial Systems Documentation Design Rm 291 1501 Roanoke Blvd Reader Comments Salem VA 24153 6492 USA General Electric Company Fax 1 540 387 8651 GE Internal DC 8 278 8651 We welcome comments and suggestions to make this publication more useful Publication Issue R evision Date Your Name Today s Date If needed how can we contact you Your Company s Name and Address Job Site RAGNO Phone No GE Requisition No E mail Your ob Function How You Use This Publication Publication No Address General Rating Excellent Good Fair Poor Additional Comments Contents O O O O E E Organization O O O O AA Technical Accuracy O O O Cl 1 0 00000000 Clarity O O O O 00000000 0000000 nT Completeness O O O gt 00000000 Drawings Figures O O O O Tables O O O Cl 000 00 00 Referencing O O O uy 0000000 UU UU WU a Readability O O O O 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 O Superior O Comparable O Inferior O Do not know Comment Detach and fax or mail to the address noted abov
26. customer use This input is jumper selectable for either 10 V dc or 4 20 mA The EMIO samples the input at 2000 samples per second and the accuracy is better than 1 full scale Chapter 4 Terminal Board I O and Equipment Connections 4 3 Customer Contact I O Customer contact inputs and relay contact outputs are wired to the ECTB board In addition to six general purpose contact inputs there are two dedicated contact inputs wetted by 70 V dc from the exciter as follows e 86G contact input used as a lockout during normal operation e 52G contact input gives the online status of the generator ECTB provides four general purpose Form C contact outputs controlled by EMIO These are used for 94EX and 30EX and other outputs For each relay the coil current and the status of a relay auxiliary contact is monitored These feedbacks are cabled to EMIO in the controller Refer to Figure 4 2 and Table 4 1 Table 4 1 General Purpose Relay Contact Characteristics Item Description Customer Power 125 V dc nominal 24 V dc min Relay break characteristic Resistive load 2A 28 V dc O5A 125 Vdc Inductive 1A 28 V dc 0 007 s L R 01A 125Vdc 0 007 s L R Suppression External suppression supplied by customer on induction loads ECTBGI is the redundant control version of the ECTB This fans inputs to three connectors J405 J408 and J418 that are cabled to the three controllers For relay control the board does two out of three voting and the 70
27. information from the active DSPX on which EGDM master should provide the drive signal to the sense resistor in the Attenuator Module The active master receives an Oscillator Signal over the fiber optic link that it converts to a 50 V signal This is applied to one end of the sense resistor in the Attenuator Module The signal conditioner receives an attenuated 10 1 differential signal from the Sense Resistor This is a simple unity gain differential amplifier with a high common mode rejection ratio followed by an A to D converter Voltage Controlled Oscillator VCO This feeds a fiber optic transmitter that is cabled to EISB The signal conditioner circuitry is powered by an isolated power supply to maintain personnel and equipment safety due to the high common mode voltage at the Sense Resistor For more information refer to Chapter 4 and GEI 100467 EXAM Module The EXAM mounts in the auxiliary cabinet and contains a sense resistor connected to a resistor network across the field EXAM applies the low frequency 50 V square wave signal supplied from the EGDM to one end of the sense resistor The resulting current generates a voltage across the resistor that is sent back to the EGDM In a redundant system the test signal can come from either M1 or M2 EXAM has a relay that switches between the two under the control of controller C A single cable carries the control and sense signals between the EGDM and EXAM modules For more information
28. levels ESELHI contains a single bridge driver ESELH2 contains three bridge drivers and ESELH3 contains six bridge drivers For more information refer to Chapter 4 and GEI 100456 3 4 e Chapter 3 Printed Wiring Boards Overview GEH 6632 EX2100 User s Guide I O Terminal Boards EPCT receives and conditions generator PT and CT feedbacks EXTB handles field flashing and protection functions The exciter terminal boards are as follows e IS200EPCT Exciter PT CT board EPCT e IS200ECTB Exciter Contact Terminal Board ECTB e IS200EXTB Exciter Terminal Board EXTB e IS200EDCF Exciter Dc Feedback board EDCF e IS200EACF Exciter Ac Feedback board EACF EPCT Board The EPCT contains isolation transformers for critical generator voltage and current measurements Two three phase generator PT voltage inputs are input to EPCT Two generator CT current inputs with current levels of 1 A or 5 A are input In addition one analog input which can be either 0 10 V or 4 20 mA is brought into EPCT All the signals are interfaced to the EMIO board For more information refer to Chapter 4 and GEI 100459 ECTB Board The ECTB board supports excitation contact outputs and contact inputs There are two versions the ECTBGI board which is only used in the redundant mode and the ECTBG2 board which is only used in the simplex mode Each board contains two trip contact outputs driving a customer lockout and four general purpose Form C relay co
29. machine electrical power accelerating power or some combination of the above The PSS used with the exciter is multi input using a combination of synchronous machine electrical power and internal frequency which approximates rotor speed to arrive at a signal proportional to rotor speed 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 e Chapter 2 Functional Description GEH 6632 EX2100 User s Guide Operator Interface The HMI contains exciter and turbine graphic displays An HMI can be mounted in a control console or on a tabletop Redundant cable operation is optional and if supplied operation continues even if one cable is faulted EX2100 User s Guide GEH 6632 Operator and engineering work stations such as the HMI Human Machine Interface and the toolbox communicate with the exciter This allows operator monitoring and control of the exciter and engineering access to system diagnostics and control block configuration Turbine Control HMI On turbine generator sets that include Mark VI turbine controls the exciter shares the HMI The HMI is Windows NT based with CIMPLICITY operator display software and communication drivers for the data highways From the HMI the operator can initiate commands and
30. refer to Chapter 4 and GEI 100467 3 8 Chapter 3 Printed Wiring Boards Overview GEH 6632 EX2100 User s Guide Power Supply Boards Any of the exciter power supply modules can be switched off from the EPDM EX2100 User s Guide GEH 6632 The exciter power supply boards are as follows e IS200EPDM Exciter Power Distribution Module EPDM e IS200EPBPExciter Power Backplane EPBP e IS200EPSM Exciter Power Supply Module EPSM e DACA Module EPDM Module The EPDM provides the power for the control I O and protection boards It is mounted on the side of the EPBP and accepts a 125 V dc supply from the station battery and one or two 115 V ac supplies All supply inputs are filtered Each ac supply is rectified to 125 V dc in an ac to dc converter DACA The resulting two or three dc voltages are diode coupled together to create the de source supply designated as P125V and N125V With the center grounded these voltages are nominally 62 5 V and 62 5 V to ground Individual supply outputs to the exciter boards are fused They have an on off toggle switch and a green LED indicator to display supply power availability These outputs supply up to three EGPA boards the EXTB board and three EPSM modules serving the three controllers Outputs are wired to the EPBP for distribution For more information refer to Chapter 4 EPBP Backplane The EPBP holds three electrically isolated power supplies EPSM that supply power to the M1
31. the AVR tracking value The EXASP inputs are as follows e Stabilizing signal from the PSS block e Output from the AUTOREF block e External test signal e Protective signal generated by the UEL block e Reactive current input feedback e Voltage magnitude input feedback e Frequency input feedback The outputs to the AVR block are the AVR setpoint and tracking value Automatic Voltage Regulator AVR Generator terminal voltage is The AVR block maintains the generator terminal voltage The setpoint reference controlled by the AVR comes from the EXASP block and the feedback 1s the generator voltage The error value 1s input to a proportional plus integral PI regulator with integrator windup protection which produces an output signal Figure 2 12 shows the block diagram When the AVR is enabled the AVR output is passed through directly from the track input to the output of the Field Voltage Regulator FVR 2 20 e Chapter 2 Functional Description GEH 6632 EX2100 User s Guide Preset Condition Preset State True s af Q Preset Not True 005 a b Software Software Q Jumper O Jumper 1 P roportional Gain Output Value Enable de dica X coin DI x Scaling Tracking Preset Mtegration Positive Integral Gain Control State Output Limit po na Emor Ll e e Ri el etpoin 2 Output Generator Integrator Negative Voltage Tracking Input Limit Tracking AVR Gain r s Status
32. through EGPA One EGPA is required per PCM EDEX is usually controlled by EXTB but can initiate de excitation if control fails EGDM and EXAM work together to detect field ground leakage current EX2100 User s Guide GEH 6632 The exciter bridge and protection boards are as follows e IS200EGPA Exciter Gate Pulse Amplifier board EGPA e IS200EXCS Conduction Sensor board EXCS e IS200EDEX Exciter De Excitation board EDEX e IS200EGDM Exciter Field Ground Detector Module EGDM e IS200EXAM Exciter Attenuator Module EXAM e Crowbar module EGPA Board The EGPA board interfaces the control to the power bridge EGPA takes the six gate commands from the ESEL and controls the gate firing of up to six SCRs on the bridge It 1s also the interface for current conduction feedback and the bridge airflow and temperature monitoring A nominal 125 V de power source from EPDM supplies an on board dc dc converter that provides power for SCR gating over the full range of input supply voltage LEDs provide visual indication of the status of the output firing currents into the bridge gate power supply line filter cooling fan rotation and bridge temperature and alarm or fault conditions For more information refer to Chapter 4 and GEI 100461 EXCS Board The EXCS board has four conduction sensors It is used to detect the presence of current in the bus The output is a logic signal EDEX Board The EDEX board is the main board i
33. through 9 b Use the Right and Left Arrow buttons to move the cursor to the digit to edit Press Enter to accept the Password Ifthe password that was entered matches the saved Password value you can then modify the Privilege Level or Password Keypad Security Keypad privilege Configure Keypad password If it does not match the keypad displays an error message Incorrect password Press Any Key to Continue 3 Use the Up and Down Arrow buttons to select either the Privilege Level or Password 4 Press Enterto edit the parameter See Editing Parameters Note When you modify the keypad password be sure to select Save Parameters To Backup Otherwise the password stored in the active parameter will not match the backup parameter set That causes the Compare Current Parameters to Backup to identify the Keypad Password parameter as different Chapter 5 Diagnostic Interface Keypad 5 15 Notes 5 16 e Chapter 5 Diagnostic Interface Keypad GEH 6632 EX2100 User s Guide Appendix A_ Warranty and Renewal Parts Introduction EX2100 User s Guide GEH 6632 When ordering a replacement part for a GE exciter the customer needs to know e How to accurately identify the part e Ifthe partis under warranty e How to place the order 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 cu
34. two or more grounds in the field winding path causes magnetic and thermal imbalances and localized heating which may damage the rotor forging or other metallic parts The function of the field ground detector is to detect a ground path from any exciter component connected to and including the main field windings The Exciter Attenuator Module EXAM drives the electrical center of the field winding with a low frequency ac voltage relative to ground To detect the current flow the voltage across a sensing resistor is picked up by EXAM and measured by the EGDM module This signal is sent over a fiber optic link to the controller where it is monitored and alarmed The EGDM boards 1 for simplex and 3 for redundant are mounted in the control power supply module located in the control cabinet High Voltage Interface HVI The HVI contains the ac and dc bus plus the line filter fuses It also contains two terminal boards providing bridge feedback to the control and the EXAM board The 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 Chapter 2 Functional Description e 2 9 Control Cabinet A second keypad is provided for redundant controls The control cabinet contains the keypad control rack control power distribution module and supp
35. view real time data and alarms on the CIMPLICITY graphic displays An HMI can be configured as a server or viewer and can contain tools and utility programs The Unit Data Highway UDH connects the exciter with the HMI or HMI Data Server The network is 10BaseT Ethernet and uses separately powered network switches For longer runs fiber optic cables can be used Control System Toolbox toolbox The toolbox is used to configure and maintain the exciter Control blocks and diagrams can be modified by configuration and loaded into the control With the exciter online real time data is available on the toolbox screen including control system diagnostics for troubleshooting 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 Chapter 2 Functional Description 2 23 Notes 2 24 e Chapter 2 Functional Description GEH 6632 EX2100 User s Guide Chapter 3 Printed Wiring Boards Overview Introduction EX2100 User s Guide GEH 6632 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 This chapter is organized as follows Section Page Control Boards ad A OE Dias 3 2 EBKP Br de 3 2
36. w Toolbox RS 232C 2 2 2 Computer Cable Connections AN oa Ol AO 1m 90S Of AO 71m 88 al Odo TM OC gt vom Os OC N gt TO MOS A O A A O al A Q O A o Y Ga amp o 00 Tool M1 Test Rings M1 eta o om OL wr uom Ol gt uom qa al o Cc al Ga al o O Cc al o N lv om Cc al o 00 a uom o 9 gt TOMO SEEDS OG gt 70 O w4xm 0 8 OC AX Cc Eh al O Tool M2 Tool C Test Rings M2 Test Rings C oe dome 300 1S200EBKP Figure 4 13 Toolbox Connections 4 20 e Chapter 4 Terminal Board I O and Equipment Connections GEH 6632 EX2100 User s Guide Chapter 5 Diagnostic Interface Keypad Introduction This chapter provides operating guidelines for the Diagnostic Interface more commonly called the keypad The keypad is a door mounted local control unit that enables you to e Monitor frequency current power and voltage e Start and stop the exciter e Set and adjust configuration parameters e Examine and reset fault
37. 100461 IS200EGPA Exciter Gate Pulse Amplifier board GEI 100466 IS200EDEX Exciter De Excitation board GEI 100467 IS200EGDM Exciter Ground Detector Module GEI 100463 IS200EPBP Exciter Power Backplane GEI 100462 IS200EPSM Exciter Power Supply Module Chapter 3 Printed Wiring Boards Overview 3 11 Notes 3 12 e Chapter 3 Printed Wiring Boards Overview GEH 6632 EX2100 User s Guide Chapter 4 Terminal Board I O and Equipment Introduction EX2100 User s Guide GEH 6632 Connections This chapter describes the customer s equipment connections and inputs and outputs 1 0 available through terminal board wiring System cabling to provide desired functionality is also defined The information is organized as follows Section Page Power Connections and Analos DO is tasa ei a tead 4 2 Power Potential Transformer Inputs iii 4 3 Potential and Current Transformer Inputs nono nonnnnonnnoos 4 3 ANG elite 4 3 Customer Contact O celiaci 4 4 Powersupply Lp US rulla 4 6 Line Filter Connections asa anos clica 4 7 Exciter Inte rival Ca maamiis 4 8 Fxeiler AC Pecdback anna sas iii 4 8 Exciter DC Feedback riletto 4 8 PA aita i alia a DD tal 4 11 CHOW Dale sila adi 4 14 Field Ground MD al auton es 4 14 TS PPP a 4 16 De Field Blasio SEUA ila lie 4 16 Elashme ControE SEguence silla 4 16 Shan Volta SE SUD PI ESS Ol adis lean 4 18 Data Highway Connections real 4 19 Control System Toolbox Con
38. 2 si M1 K53A relay contacts P70Vdc Current M1 53A gt Limit y wassal vm Circuit 2 gt P70VDC 8 Figure 4 10 Field Flashing Control from EMIO and EXTB EX2100 User s Guide GEH 6632 Chapter 4 Terminal Board I O and Equipment Connections 4 17 Shaft Voltage Suppressor Excitation systems which produce a dc voltage from an ac supply through a solid state rectification process cause ripple and spike voltages at the exciter output Due to their rapid rise and decay times these voltages are capacitively coupled from the field winding to the rotor body This creates a voltage on the shaft relative to ground that if not effectively controlled can damage both journals and bearings The shaft voltage suppressor is a filter that conducts the high frequency components of the induced voltages to ground and limits shaft voltage caused by thyristor commutation to less than 7 V zero to peak For the connections to the field refer to Figure 4 11 Generator Field Generator Field Shaft Voltage Suppressor C1 R5 HLR6_ C2 Field Flashing Thyrite Crowbar HSA Heatsink JOYA AICX A DEPL EPL1 lt _ EPL2 Figure 4 11 Shaft Voltage Suppressor Thyrite and Crowbar 4 18 Chapter 4 Terminal Board I O and Equipment Connections GEH 6632 EX2100 U
39. During an abort stop trip the field contactors are opened immediately The stored field energy must be dissipated through some other means SCR De excitation Module EDEX For customers requiring a rapid de excitation an SCR de excitation module is provided In the EDEX module an SCR is fired to provide a conduction path through the field discharge resistor or inductor for the field current to flow and dissipate the field energy The de excitation module has dual independent firing control circuits Each is activated by a parallel combination of auxiliary contacts representing the status of the field contactor s bridge ac supply breaker and exciter bridge operating state Any one of these paths can gate the de excitation SCR which does not conduct unless the field voltage is inverted If neither firing control circuit can fire the SCR it 1s fired on overvoltage when the anode to gate voltage on the SCR exceeds the break over voltage of the breakover diode string connected between the anode and gate De excitation modules can be paralleled for larger excitation systems Thyrite In systems that do not use the standard de excitation module a thyrite is connected across the dc output buses of the thyristor bridge 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 G
40. E Sales Representative Note Standard warranty is 18 months from shipment or 12 months from when power is first applied whichever comes first A 4 e Appendix A Warranty and Renewal Parts GEH 6632 EX2100 User s Guide How to Order Parts indicates the international access code required when calling from outside of the USA EX2100 User s Guide GEH 6632 Parts still under warranty may be obtained directly from the factory GE Industrial Systems Product Service Engineering 1501 Roanoke Blvd Salem VA 24153 6492 USA Phone 1 800 533 5885 United States Canada Mexico 1 540 378 3280 International Fax 1 540 387 8606 All Renewals spares or those not under warranty should be ordered by contacting the nearest GE Sales or Service Office Be sure to include e Complete part number located in the renewal parts list e Part name e Exciter model located in it s nameplate Data Nameplate The data nameplate is located on the back of the cabinet door It provides information needed when ordering parts or contacting 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 SV AAA 123 XX
41. EH 6632 EX2100 User s Guide The Shaft Voltage Suppressor protects the shaft bearings The field ground detector protects the generator shaft EX2100 User s Guide GEH 6632 Shaft Voltage Suppressor Excitation systems which produce a dc voltage from ac through a solid state rectification process produce ripple and spike voltages at the exciter output Due to their rapid rise and decay times these voltages are capacitively coupled from the field winding to the rotor body This creates a voltage on the shaft relative to ground Shaft voltage if not effectively controlled can be damaging to both journals and bearings The shaft voltage suppressor is a filter that conducts the high frequency components of the induced voltages to ground This filter is shipped loose in some cases otherwise it is part of the lineup Field Flashing Module The field flashing module is provided on generator terminal fed excitation systems It supplies initial exciter current and builds generator voltage supplying approximately 10 15 of no load field current from the station batteries during the startup sequence If large machines require ac field flashing the ac power is supplied through an isolation transformer Both designs require customer supplied power Field Ground Detector EXAM and EGDM The generator field winding is electrically isolated from ground The existence of one ground usually does not damage the rotor However the presence of
42. HH Unit 8 sequence number of components CA Case assembly CD Core dc drive controller Cl Core ac drive controller LU Lineup multiple case assembly PN Panel assembly RL Requisition level assembly Sequence project Unique Order month year to reg n product line Identifies manufacturer as GE Industrial Systems Salem VA Sample Exciter ML Catalog Number Appendix A Warranty and Renewal Parts A 5 Notes A 6 e Appendix A Warranty and Renewal Parts GEH 6632 EX2100 User s Guide Appendix B Ratings and Specifications 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 Caution EX2100 Specification Description Power Conversion Module PCM Single bridge rating Parallel bridge rating 1 000 and 2 000 A dc at up to 1 000 V ac 8 000 A dc at up to 1 500 V ac with up to 6 bridges 150 of design Amperes EDA for 30 s at 40 C Forcing requirements Power Sources Power for the PCM Voltage source Power for the PCM VA power Power for the PCM Frequency Power to the Cooling Fans 3 Flashing power Control power redundant with 2 bridges warm backup Heat loss in single PCM cabinet EX2100 User s Guide GEH 6632 Auxiliary bus Generator terminals Compound Source 600 or 1 000 V versions 3 251 KVA 1 000 V version 3 phase 50 60 Hz 5
43. Inputs 000006 GP Outputs 06 00 5 8 Chapter 5 Diagnostic Interface Keypad GEH 6632 EX2100 User s Guide Using the Menus Viewing and Res Faults are displayed in order of occurrence with the most recent fault at the top EX2100 User s Guide GEH 6632 The keypad s Main Menu leads to other menu screens where data can be reviewed and modified The Main Menu can be accessed from any screen as follows e Ifalready in a Menu screen press the Menu button e Ifina Status screen press the Menu button once or twice Main Menu Fault List Alarms Alarm String Application data Diagnostic and utility General setup I O interface Note The Main Menu selections may vary from product to product Use the Navigation buttons to move through the menus select items and adjust values e Press the Up or Down Arrow buttons to move through and highlight menu items e Press the Enter button to select a highlighted item e To return to a previous menu screen press the Escape button Left Arrow button or follow on screen instructions e When a menu has more than one screen Move to the next screen by highlighting the last item on the displayed screen then press the Down Arrow button once more Ifthe last menu item is reached then pressing the Down Arrow button will wrap back to the first item on that menu etting Faults When the display indicates either a Trip or an Alarm fault refer to Reading the Di
44. M2 Optical Counters RI voo a Oscillator fed ue U Oscillator 2k UPS Optical gontro Transmitter L C RE C To DSPX Counters Optical Receiver Master Select a Optical Transmitter Figure 4 9 Field Ground Detector Chapter 4 Terminal Board I O and Equipment Connections e 4 15 Field Flashing The station battery is used to initiate the field current An auxiliary ac source can also be used Flashing current flow is monitored by the control through the field shunt Field flashing relays 53A and 53B are controlled from drivers on the EMIO board through pilot relays on EXTB In redundant control the three driver signals actuate pilot relays on EXTB that are contact voted to output a single voltage These outputs actuate the 53A and 53B relays in the Auxiliary Cabinet The 53A and 53B contacts put dc voltage from the station battery across the generator field as shown in Figure 4 10 The field flashing module supplies approximately 15 to 20 of AFNL to the generator field during the startup sequence For ac field flashing the ac voltage is rectified by a diode bridge and filtered The startup sequences and logic are the same Dc Field Flashing Settings Field flashing panels are used to supply a wide range of flashing currents This happens if the flashing control fails leaving the flashing current on continuously The flashing current mag
45. Simplex control EXTB G4 Breaker Mode Yes Yes EX2100 User s Guide GEH 6632 Chapter 3 Printed Wiring Boards Overview 3 5 EDCF Board EDCF handles bridge dc The EDCF board measures field current and field voltage at the SCR bridge and voltage and current feedback interfaces to the EISB board in the control panel over a high speed fiber optic link The fiber optics provides voltage isolation between the two boards and high noise immunity Field current is measured using a shunt in the dc field circuit The field voltage feedback circuit provides seven selector settings to scale down the bridge voltage depending on the type of bridge application For more information refer to Chapter 4 and GEI 100464 EACF Board EACF handles bridge ac The EACF board measures the exciter PPT ac supply voltage and current The voltage and current feedback EACF terminal board contains transformers for a 3 phase voltage measurement and terminals for two Flux Air core coils The outputs of the voltage and current circuits are fanned out to three DB9 connectors for cables to controllers M1 M2 and C These cables can be up to 90 m in length There are two versions of this board EACFGI 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 Bridge and Protection Boards and Modules Bridge control passes
46. Terms fault code A message from the controller to the HMI indicating a system warning or failure field flashing The supply of initial exciter current during startup usually from station batteries field ground detector The field ground detector is an active circuit that detects a ground in either the ac or dc sections of the exciter and field wiring field voltage regulator FVR FVR is controller software that maintains the generator terminal voltage using inputs from the Automatic Voltage Regulator AVR and the field voltage feedback firmware The set of executable software that is stored in memory chips that hold their content without electrical power such as EEPROM or Flash flash A non volatile programmable memory device FVR Field Voltage Regulator software controlling the voltage across the field gating Controlling the conduction of the power SCRs with an input pulse train or a voltage health 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 HMI Human Machine Interface usually a PC running Windows NT and CIMPLICITY HMI software GEH 6632 EX2100 User s Guide hot backup Two bridges are used but only one is connected to the field the other the backup is connected to a small dummy load If the active bridge fails it is disconnected from the field by relays and the b
47. Two keypads are shown connected to M1 and M2 Both keypads have access to the information in controller C Ethernet Data Highway to Turbine Control and HMI PT PT PT PT ojojojo o olo O Fan out circuits ojojo o o o o O ojojo jo O O O C ECTB 70v d Keypad Backplane M1 M2 C To Flashing lt x lt x cli O 0 7 N O lt A e a A lt 41 Device gt 2 gt fo 04 m m 8 Od 8 De 2 Lu LU O O UN O excitation S gt O gt S O LU LU O LU g Crowbar m m mM E ep 109 Cp lin Lu LU Lu E e 125Vde la O Se II ata Tool 1 AT Gate Pulse Amplifiers 4 E CODE i R YW 3 125Vdc ea 125Vde i mer Fiber optic Field
48. UPLE aaa E E 2 9 Field Flashing Module usub Ga USO muss 2 9 Field Ground Detector EXAM and EGDM eeeeeeeeereers 2 9 High Voltave Interlace HV skill ella 2 9 Conto CAPI gaia ak aaa ence A 2 10 Diagnoste JImterface Keyad illa 2 10 Control Module realize 2 11 Simpler Control SS iaa 2 12 Redundant Control System as 2 13 Control Power SIPPSS ee NOA 2 14 Exeter SONWANE A da alad lii 2 17 Auto Reference AUTO REE Eta 2 20 AVR Setpoint EXASP evade 2 20 Automatic Voltage Regulator AVR iii 2 20 Manual Reference MANUAL REF 2 21 Field Voltage and Current Regulators FVR FCR 2 21 Under Excitation Limiter VEL 2 22 Power System Stabilizer PSSsa rulla 2 22 Human Machine Interface AMD 2 23 Meier 2 23 O zaia 2 23 Chapter 2 Functional Description 2 1 Exciter Hardware The EX2100 exciter consists of the following basic components e Power Conversion Module PCM and cooling fans e Power potential transformer PPT mounted separate from exciter e Line to line filters e Shaft voltage suppressor e De excitation module e Diagnostic Interface keypad e Controllers and I O boards e Control power supplies Optional components that can be added to the exciter are e Warm backup bridge configuration e Multibridge configuration for high current requirements e Compound power source separate from exciter e Auxiliary power source b
49. V dc and 24 V dc inputs are redundant 4 4 Chapter 4 Terminal Board I O and Equipment Connections GEH 6632 EX2100 User s Guide J13M1 From M1 P70 V de ECTBG2 Simplex s P24M1 P24D 18 NO A Customer J405 P24D 19 Power to D COM Relay coil S amp H Contacts Driver K GP 20 125 V dc From M1 f NC O EMIO Ex Fault Four General Purpose Relay Outputs as Above to Mark VI 1 S Relay coil a M1 Driver K M1 Customer Power to a Contacts 125 V de 5 9 Two Trip Relay Outputs as Above Term 1 amp 5 Ex trip to Customer 86 P70Vdc Auxiliary Red LED lt lt ao N 7 npu Ee S i Current Limit E 1 Circuit Six Circuits as Above P70Vde dsl Red LED le 45 Leu Contact A 4 Closed LE i Current Limit online Circuit a 47 Contact S Open To LI EMIO 48 tor Trip T Current Limit TB2 Figure 4 2 Customer I O wired to ECTBG2 Simplex Board EX2100 User s Guide GEH 6632 Chapter 4 Terminal Board I O and Equipment Connections e 4 5 Power Supply Inputs The customer s ac and de power inputs are wired to the exciter s Power Distribution Module EPDM which is located on the left hand side of the exciter power backplane rack Figure 4 3 shows the screw
50. ackup is connected ICS Integrated Control System ICS combines various power plant controls into a single system IEEE Institute of Electrical and Electronic Engineers A United States based society that develops standards I O Input output interfaces that allow the flow of data into and out of a device I O drivers Software that interfaces the controller with input output devices such as communication networks sensors and solenoid valves IP address The address assigned to a device on an Ethernet communication network line filter Filter networks across the three phase input lines to the exciter to minimize the voltage spikes that result from the abrupt decay of current during SCR commutations LCI Static Starter Electric power device that runs the generator as a motor to bring a gas turbine up to starting speed logical 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 e v vi e Glossary of Terms Modbus A serial communication protocol developed by Modicon for use between PLCs and other computers multiple bridges Several power producing bridges operate in parallel to produce a high field current These share the exciter current load to provide redundancy and increased reliability NEMA National Elec
51. ak the output while inserting a discharge resistor with the normally open contact But an ac break with the SCR based de excitation module could also be applied The breaker has two coils 41 Close and 41 Trip and auxiliary contacts for de excitation Figure 4 8 shows how the breaker interfaces with the EXTB control board and EDEX EX2100 User s Guide GEH 6632 Chapter 4 Terminal Board I O and Equipment Connections 4 11 Auxiliary Cabinet Control Cabinet Converter Cabinet De Excitation EXTB G1 Contactor Mode Generator Generator Simplex version is G2 3505 Field Field sh i Conduction J515 Sense Circuit J8 ja M1 N ki M1 De Excit y A Status alus Status Feedback 5 Command i M1 Firing N24 P24V Command 41 Trip Relays not present on G1 and G2 boards i M2 M2 De Excit Fy gt 8 meta Y SL Status E 70V Ret Self Firing y pies ie M2 Firing io 4 P24 P24 A a 1 Close M COM 2 COM gt 2 lan mil dl 3 593 P125 Bkr Ct N24 N24 A To EPBP To EPBP J17M1 J17M2 o o _ x r rr r Figure 4 7 DC Contactor Control and Wiring to De Excitation Board 4 12 e Chapter 4 Terminal Board I O and Equipment Connections GEH 6632 EX2100 User s Guide Auxiliary Cabinet Control Cabinet EXTB G3 Breaker
52. and dissipates the stored energy of the generator field through the field discharge device Feedback from either conduction sensor verifies that the discharge circuit has operated successfully If both independent firing control circuits fail to fire the SCR 1s fired by the anode firing circuit when the anode to cathode voltage has exceeded the selected level For large exciters it is possible to connect multiple de excitation modules together with one EDEX board configured to be the Master and the other boards configured to be Slaves In this case a firing control signal sent to the Master is relayed to the Slave modules firing all modules simultaneously EXTB controls the main breaker or contactor in the field circuit When this opens the auxiliary contacts cause an immediate de excitation commanded by EDEX De excitation controlled by EXTB in both the contactor and breaker mode is shown in Figures 4 7 and 4 8 Location of the 41A dc contactor in the field circuit is shown in Figure 4 6 Contactor 41B is optional Both contactors are located in the Power Conversion Cabinet and are driven from the 41 Close pilot on the EXTB board Several auxiliary contacts are used to provide status feedback to the control and firing commands to the de excitation board EDEX An alternative to an 41A and 41B contactor is to use a breaker in the excitation ac supply or dc field circuit Normally the breaker would be a dc field breaker that ccould bre
53. and Renewal Parts iii Identifying A A A RO Renewal Parts List aca Patt Number SHUI cl ios Waranty EOS alia Howto Order Parts ai Data Nam a o As ea aasad Appendix B Ratings and Specifications Glossary of Terms Index EX2100 User s Guide GEH 6632 Contents iii Notes iv e Contents GEH 6632 EX2100 User s Guide Chapter 1 Equipment Overview Introduction EX2100 User s Guide GEH 6632 The EX2100 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 This chapter introduces the exciter and defines the document contents Its purpose is to present a general product overview as follows Section Topic Page Dy SECT O VER A II ah ile Menai aha Nan i oh Area Manatee de 1 2 Hardware Venica iii 1 5 AU A AU E i 1 6 Techinical Characternisues ella 1 6 A ica 1 8 Related DOC UIC INS ses a a a a a 1 8 Document IA rich 1 8 Chapter 2 Functional Description Chapter 3 Printed Wiring Boards Overview Chapter 4 Terminal Boards I O and Equipment Connections Chapter 5 Diagnostic Interface Keypad Appendix A Warranty and Renewal Parts Appendix B Ratings and Specifications Glossary Chapter 1 Equipment Overview 1 1 System Overview Either simplex or redundant control is available The exciter is a f
54. ansmitted BIOS Basic input output system Performs the controller boot up which includes hardware self tests and the file system loader bit 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 Glossary of Terms e i ii e Glossary of Terms block Instruction blocks contain basic control functions which are connected together during configuration to form the required machine or process control Blocks can perform math computations sequencing or regulator continuous control board Printed wiring board or card bus Upper bar for power transfer also an electrical path for transmitting and receiving data bumpless No disruption to the exciter when transferring control byte A group of binary digits bits a measure of data flow when bytes per second CMOS Complementary metal oxide semiconductor COM port Serial controller communication ports two COMI is reserved for diagnostic information and the Serial Loader COM2 is used for I O communication configure To select specific options either by setting the location of hardware jumpers or loading software parameters into memory crowbar The crowbar limits the high negative voltages that can be induced into the PCM during a pole slip loss of synchronism event It includes a discharge resistor and is self firing CT Current Transformer used to measure current
55. art 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 e Order specific assemblies Major assemblies or items that make up a specific exciter constructed from common assemblies e Common assemblies Subassemblies used in many GE exciter products not just a specific exciter e Components Individual parts that make up assemblies e Printed wiring boards These categories and the makeup of their part numbers are defined under Order Specific Assemblies A 2 e Appendix A Warranty and Renewal Parts GEH 6632 EX2100 User s Guide EX2100 User s Guide GEH 6632 Order Specific Assemblies These parts make up the particular exciter Other items obtained specifically for the order may also use a similar part number structure which provides information about the equipment 3V AAA 123 XX Unit amp sequence number of Sequence projec l Unique Order to req n product line Identifies manufacturer as GE Systems Salem Sample Part Number for Order Specific Assembly 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 36C77452444648 is the part number for a cable Components Components are the basic parts that make up assemblies T
56. ated Exciter Variable A Meters A Fault State FVR Feedback Gi 60 Volts 30 0 100 150 A Limiter FldCurrAmps 0 00 Amps 30 0 Vmag Imag 60 00 0 00 100 150 t Auto Mode 1 Running y Online Figure 5 2 Status Screen Example The Menu Screen see Figure 5 3 lists and provides access to menu based functions for adjusting parameters running wizards and viewing faults see Menu Selections Main Menu Fault List Alarms Alarm String Application data Diagnostic and utility functions General setup I O interface Figure 5 3 Menu Screen Example The Exciter Health and State Icons continually show on the right hand side of all display screens 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 Chapter 5 Diagnostic Interface Keypad 5 5 Table 5 3 Exciter Health and State Icons Group Icon Indication Description A Communications Animated line its center raises and lowers shows that there is OK communication between the keypad and the exciter Heartbeat Communications Animated metronome icon shows that the keypad is attempting to not established establish communication with the exciter but cannot MA automode Regulates terminal voltage Control OM Manualmode Regulates f
57. conditions This chapter 1s organized as follows Section Page Usine ADA a do tected 5 2 Reading the Displaying 5 5 Chanoine Display Unibet 5 7 A djustins Display Contrastes raias an do olii 5 7 O A A E a a 5 8 RETAMA he MLS rele 5 8 Alternate Status Screen Display 1 0 iii 5 8 Sims ne MENUS ais staatikale 5 9 Vi wins and Reseltime Ple lla ia 5 9 Edime Parame elitario 5 10 Paramotor BackUp elet 5 11 Firmware and Hardware Information e 5 13 Prot ctino the K Cy Pad Oo iaa 5 14 Modityino he ProteCHOns lilla 5 14 EX2100 User s Guide GEH 6632 Chapter 5 Diagnostic Interface Keypad e 5 1 Using the Pushbuttons The keypad includes membrane type pushbuttons to access exciter values and to control the exciter Tables 5 1 and 5 2 define the pushbutton functions for menu navigation and exciter control see Figure 5 1 EX2100 Excitation Control gt Exciter Health FVR Feedback r ol oe State Icons 0 0 Volts 30 0 100 150 A FldCurrAmps 0 00 Amps 30 0 100 150 L Vmag A 0 00 1 Freg Hz 60 00 Eh A gt Navigation gt Exciter Control D On Ala g Y l E dr 1 E E i Run Green i i j Reset gt 7 i Status h E i Auto q d INI T Faults n AA s A q iatale y q E E ae 7 E T i gt R 5 Stop Red Menu i h Command Man x sa A Menu 2 orn _Moltage Level y o des de Off
58. daries are brought into CT transformers The resulting low voltage transformer output signals are cabled to the EMIO board in the control rack Generator Voltage Measurement The cable lengths from the generator PTs can be up to 1000 ft of 12 AWG wire The PT secondary outputs are nominally 115 V rms at 50 60 Hz and are fused On EPCT the two transformers make a three wire open delta voltage measurement yielding 1 533 V rms for a 115 V rms input In the case of a simplex system the voltage signals are sent through the J305 connector to the EMIO board in the M1 controller In the case of a redundant system the signals are fanned to connectors J305 J308 and J315 and sent to controllers M1 M2 and C PT Inputs CT Inputs 2 3 phases each 2 Phases A and C 10 200 Vrms 115 V rms nominal 0 2 A nominal 1A or 0 10 A nominal 5 A 50 60 Hz nominal 50 60 Hz nominal Less than 1 VA Circuit loading 6 25 VA nominal Generator Current Measurement Two generator current inputs from the CTs are wired to non pluggable terminal blocks TB2 and TB3 that support ring terminals The CTs do not have fused secondaries There is a choice of a 0 1 A rms CT input or a 0 5 A rms CT input The cable length from the CT to the EPCT board can be up to 1000 ft and the wire gage can be up to 10 AWG The resulting signals are sent to the EMIO board through the same connectors as the voltage signals Analog Input The EPCT board provides an analog input for
59. ded for each reguisition The contract documents define the terms of the document distribution If provided per contract the following documents contain reguisition information about the drive system e Requisition drawings including outlines layouts and elementary diagrams e Renewal parts listing Note If differences exist between the general product documentation and the requisition documentation the requisition documentation should be considered the more exact representation of your equipment or system configuration 1 8 Chapter 1 Equipment Overview GEH 6632 EX2100 User s Guide Chapter 2 Functional Description Introduction EX2100 User s Guide GEH 6632 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 Page EXCUSA m 2 2 Exeter CONSUMOS S 2 3 PomerConversion CAI i 2 5 Manual Ac Disconnect Optional nn nno non nnnnnnnnnnnos 2 5 Power Converter Module PCM LL 2 5 Gate Pulse Amplifiers EGPA Board a 2 6 Main Dc Contactors 41A or 41A 41B Optional 2 7 Free Wheeling Diode De excitation iii 2 7 AAA Did 2 8 AG Lme t0 Lme Filters Asega E 2 8 De excitation Module CEDEX cue 2 8 Shalt Y ollas S
60. e Place stamp here GE Industrial Systems Documentation Design Rm 291 1501 Roanoke Blvd Salem VA 24153 6492 USA Contents Chapter 1 Equipment Overview 1 1 lA Ago OLE CRS ore 1 1 SPERO leali 1 2 A QUI ARRE AR n q IAN 1 5 One 1 6 Technical haracie tristie srl 1 6 E AAA o Em ila 1 8 Related DOCUMEN S a 1 8 Document DISTAL A AA AA 1 8 Chapter 2 Functional Description 2 1 odc Hoesen a Geena Be Rete A 2 1 ICG CSE TAT ARO asc i cate E cd S 2 2 Exciter Con SUGA INS sais ici 2 3 Power Conversion Ea isis 2 5 Manual Ac Disconnect Optional iii 2 5 Power Conversion Module PCM uu 2 5 Gate Pulse Amplifiers EGPA Board iii 2 6 Main Dc Contactors 41A or 41A 41B Optional 2 7 Free Wheeling Diode De excitation iii 2 7 o iial cere ekat cano els aa oe cores leas 2 8 AC Line to Line FIETS acct ii Lai 2 8 De excitation Module EDER ssa ieri 2 8 Shaft VA cilea 2 9 Held El shine Modules lalla 2 9 Field Ground Detector EXAM and EGDM i 2 9 Hioh Veltape Intertace HNX Esa 2 9 ControlCabmet eolie a E 2 10 Diagnostic Interface NyPad aaa 2 10 Control Mod l ceina o Re 2 11 Simple x Control System elia A 2 12 Redundant Controls ystems nents eae lirica 2 13 Control Power Supplier a Lelli 2 14 Prener SONWALE IA AAA AA A AA ARES 2 17 Auto Reference AUTO REE as aii RR E PI A A 2 20 AV R Setpoint EXASD saia assa e Apa d
61. e 2 8 shaft voltage suppression 1 5 2 8 Shaft voltage suppressor 2 2 Shaft Voltage Suppressor 2 1 2 9 4 1 4 18 Simplex Control Configurations 2 3 Simplex Control System 2 1 2 12 Software Overview 1 1 1 6 Status Screen 5 1 5 3 5 5 5 8 Index e ili T Technical Characteristics 1 1 1 6 Thyrite 2 8 4 18 TMR see Triple Modular Redundant Toolbox see Control System Toolbox Triple Modular Redundant 2 2 2 14 U UDH see Unit Data Highway UEL see Under Excitation Limiter Under Excitation Limiter 2 1 B 2 Unit Data Highway 1 2 4 19 W Warm backup bridge configuration 2 2 Warranty and Renewal Parts 1 1 A 1 iv Index GEH 6632 EX2100 User s Guide GE Industrial Systems General Electric Company 1 540 387 7000 1501 Roanoke Blvd www GEindustrial com Salem VA 24153 6492 USA
62. en be restored Caution gt To compare the active parameter set to the backup parameter set 1 From the Main Menu select Parameter Backup Functions then select Compare Current Parameters to Backup BACKUP DIFFERENCES lt More Ts VHiTripLev Backup value AFFL Backup value VFFL Backup value lt More Us 2 Use the Up and Down Arrow buttons to scroll through the list of backup differences 3 Press Escape to return to the previous menu 5 12 e Chapter 5 Diagnostic Interface Keypad GEH 6632 EX2100 User s Guide Firmware and Hardware Information gt To view the firmware versions for the DSPX board and the keypad From the Main Menu select 1 General Setup 2 Firmware Version Hardware Info 3 Display Firmware Version The following screen displays GE Generator Control EXZ 100 DSPX Firmware Version V02 06 00B DSPX Boot Monitor Version V02 02 00C DDI Firmware Version V02 00 00B Press ESC to exit gt To view exciter hardware information From the Main Menu select 1 General Setup 2 Firmware Version amp Hardware Info 3 Display Hardware Information The following screen displays GE Generator Control Hardware Information IS200ESELHIAPR 5473716 IS215ACLAHIAL 8790070 IS200DSPXHICAA 7611193 IS200EMIOHIAPR 7360814 IS200EISBHIAPR 5673766 lt More gt ESC to exit EX2100 User s Guide GEH 6632 Chapter 5 Diagnostic Interface Keypad e 5 13 Protecting the Keypad To protect the exc
63. erent bridge ratings based on the power output required Bridge Rectifier Each bridge rectifier is a 3 phase full wave thyristor bridge The bridge has six SCRs thyristors controlled by the Exciter Gate Pulse Amplifier board EGPA as shown in Figure 2 3 Heat is dissipated through large aluminum cooling fins and forced air flow from overhead fans Leg Reactors and Cell Snubbers The commutating reactors are located in the ac legs feeding the SCRs and the snubbers are an RC circuit from the anode to the cathode of each SCR The cell snubbers line to line snubbers and line reactors together perform the following functions to prevent misoperation of the SCRs e Limit the rate of change of current through the SCRs and provide a current dump to aid in starting conduction e Limit the rate of change in voltage across the cell and during cell commutation limit the reverse voltage that occurs across the cell The SCR snubbers include PRV resistors to limit the peak reverse voltage These resistors can be removed if required Three phase input power is fed to the bridge from the secondary of the PPT either directly or through an ac breaker or disconnect and a line to line filter With inverting bridge designs the bridge 1s capable of negative forcing voltage which provides fast response for load rejection and de excitation The de current output of the bridge is fed through a shunt and on some designs a contactor 41A or both 41A and 41B
64. escription voltage and regulator balance Diagnostic displays such as the alarm history display provide system information for maintenance and troubleshooting GEH 6632 EX2100 User s Guide EX2100 User s Guide GEH 6632 Control Module The control module is a VME style rack with boards cable connected to the I O terminal boards This rack is divided into three independently powered sections for the M1 M2 and C controllers Each controller consists of control and I O processor boards 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 Microprocessor based Application Control Layer Module ACLA controller with LAN Ethernet port Microprocessor based Digital Signal Processor DSP X controller Exciter ISBus Board EISB with fiber optic communication with the bridge feedback board Exciter Main I O Board EMIO with control of pilot relays and gating commands to the ESEL board Exciter Selector Board ESEL with gate pulse distribution from the active controller to the EGPA Chapter 2 Functional Description 2 11 Ethernet Data Highway to Mark VI LCI and HMI Simplex Control System The interconnections between the simplex control and the terminal boards generator protection modules and power supply are shown in Figure 2 5 Only one EPSM power supply i
65. ess ESCAPE to Continue 3 Press the Escape button to save the contrast value and return to the previous menu EX2100 User s Guide GEH 6632 Chapter 5 Diagnostic Interface Keypad 5 7 Status Screen The Status screen displays up to eight variables parameters The first two parameters are displayed both in text and animated meters Table 5 4 defines the characteristics of the bar graphs for these parameters Reading the Meters A variable shown as a bar graph is over range when it is either greater than 100 or less than 100 The over range mark is shown with a vertical bar through the bar graph at the 100 and the 100 marks Not Over Range n te D 100 100 Over Range 150 ES 150 Table 5 4 Animated Meter Characteristics Default for Status Screen Bar Graph Variable Numeric Display Units in Bar Graph DC bus voltage Magnitude of dc bus voltage FVR feedback Percentage of dc per unit volts VDC PU AC line current Magnitude of ac line current Mag Fil Percentage of source top rated current 1 PU Alternate Status Screen Display I O The keypad has an alternate Status screen that displays the status of the general purpose inputs and outputs To toggle between the Meter Status Screen and the I O Status Screen press any of the Arrow buttons The circle under each heading indicates the status of the corresponding I O point as follows e True e O False Display I O Status 1234356 GP
66. gure 2 7 Ethernet Data Highway EGD Modbus Serial Modbus DSPX C I O Figure 2 7 Communication between Redundant Control Boards Control Power Supplies Power for the controls come from the Exciter Power Distribution Module EPDM This is supplied by a 125 V dc source and one or two 115 V ac sources The ac source is passed through an ac dc converter DACA as shown in Figure 2 8 The resulting 125 V de is diode coupled with the other de sources to create a de bus that feeds the control modules and gate pulse amplifier boards Fused outputs from the EPDM feed power to the EGPA boards EXTB and the Exciter Power Backplane EPBP Each output has an LED indication and an on off isolation switch The EPDM mounts on the left side of the Exciter Power Supply rack Up to three Exciter Power Supply Modules EPSM mount in the EPBP backplane and provide logic level power to the controller s 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 e Chapter 2 Functional Description GEH 6632 EX2100 User s Guide addition there is an isolated 70 V dc output for use by EXTB and ECTB for contact wetting Up to three ground detection modules EGDM are also mounted in the EPBP as shown in Figure 2 9 These communicate with the EXAM module which is located in the auxiliary cabinet
67. hey represent the lowest discrete level of a system Component part numbers consist of a combination of alphanumeric characters that define the class and specific item A sample number is shown below 104X 109 1ADO38 E Item or rating 500 V 3 2 A FNQ Component type fuse Component Sample Part Number for Component Appendix A Warranty and Renewal Parts A 3 Printed Wiring Boards A printed wiring board is identified by an alphanumeric part catalog number stamped near its edge The structure of a board s part number is described below Note All digits are important when ordering or replacing any board The factory may substitute later versions of boards based on availability and design enhancements However GE Industrial Systems ensures compatibility of replacement boards IS 200 DSPX G AAA L Artwork revision Functional revision Functional revision Group variation G or H Functional acronym Assembly level Manufacturer DS 4 S for GE in Salem VA 1Backward compatible 2Not backward compatible 3200 indicates a base level board 275 indicates a higher level assembly or added components such as 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 G
68. hing 1 5 2 8 2 9 3 4 3 6 4 16 Field flashing module 2 2 Field Flashing Module 2 1 2 9 Field Ground Detector 2 1 2 9 3 7 4 1 4 14 4 15 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 G Gate Pulse Amplifiers 2 1 2 6 Generator Current Measurement 4 3 Generator Voltage Measurement 4 3 H Hardware Overview 1 1 1 5 High Voltage Interface 2 1 2 9 HMI Mark VI 2 1 Toolbox 2 1 4 20 HMI see Human Machine Interface How to Get Help 1 1 1 8 Human Machine Interface 1 2 2 1 2 20 2 21 3 4 4 19 Mark VI 2 1 Toolbox 2 1 4 20 HVI see High Voltage Interface I O 1 1 1 5 1 6 2 2 2 10 2 11 3 1 3 2 3 4 3 5 3 9 3 11 4 1 4 5 5 1 5 8 I O Terminal Boards EACF 2 9 3 1 3 4 3 5 3 7 4 3 4 8 ECTB 1 7 2 15 3 1 3 4 3 6 3 10 3 11 4 4 B 2 EDCF 2 6 2 9 2 13 3 1 3 4 3 6 3 10 3 11 4 8 EPCT 2 13 2 17 3 1 3 4 3 5 4 3 EXTB 2 7 2 14 2 15 3 1 3 4 3 6 3 8 3 11 4 11 4 16 4 17 K Keypad 1 1 2 10 5 2 5 7 5 14 5 15 L Leg Reactors 2 5 Line Filter Connections 4 1 4 7 Line to line filters 2 2 Main Dc Contactors 2 1 2 7 Manual Ac Disconnect 2 1 2 5 MANUAL REF see Manual Reference Manual Reference 2 1 2 21 Mark VI HMI 2 1 Micropr
69. hown in Figure 4 9 applies a low frequency square wave voltage with respect to ground and monitors for current flow through a high impedance ground resistor The square wave is 50 V dc at 0 2 Hz frequency If PRV resistors are present grounds anywhere in the system can be detected even while the exciter is not being fired from the PPT secondary to any point in the generator field The ground detector feedback voltage is sent over a fiber optic link to the DSPX where it is monitored and alarmed The DSPX controls the oscillator voltage over an adjacent fiber optic link In the case of redundant control if the M1 controller fails the oscillator in the 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 e Chapter 4 Terminal Board I O and Equipment Connections GEH 6632 EX2100 User s Guide EX2100 User s Guide GEH 6632 Auxiliary Cabinet Control Cabinet Generator Generator Field From Field a Flashing T 53B a SEA esa i ESSE x Ground Detector Attenuator Power Control I Module EXAM Backplane Backplane EPBP EBKP E pi ni anzi a l I CA CREA ARE 4 EISB M1 Ground EGDM M1 To DSPX Detect Optical Count etector PT vc E ounters Voltage Oscillat e LM gt scillator Oscillator 1 7 control Transmitter a M2 To DSPX
70. iacetate ae 2 20 Automatic Voltage Regulator AVR iii 2 20 Manual Reference MANUAL REF iii 2 21 Field Voltage and Current Regulators FVR amp FCR 2 21 Under Excitation Limiter UE G sgh nati 2 22 Power System Stabilizer PS Se ici 2 22 Operaierntertaee errata 2 23 Turbine Cono dai 2 23 Control System Toolbox toO0lbox oooooonoonooooooooononononnnnnnnnnnnnnnnnononononnnononnnnnos 2 23 EX2100 User s Guide GEH 6632 Contents i Chapter 3 Printed Wiring Boards Overview 3 1 Joiroducnon RO O o O Eg A AN 3 1 Control OTS aio 3 2 Exciter Backplane EBK P lid 3 2 Digital Signal Processor Board DSPX rr rrrreeeererreeee 3 2 A at 3 4 BISB Board cada 3 4 EMIO Borda ida 3 4 ESTE id 3 5 TD TEMAL BOITA S rita 3 5 EPC EBOI eccola 3 5 BETE Board acacia 3 6 EX EB BON inci 3 6 EDOR Board rca 3 6 Ebbe 3 7 Bridge and Protection Boards and Modules iii 3 7 FG slogan mmm em ua td 3 7 EXCS DO emamaa mmm tm N RS 3 7 EDE X Boar onda mm t PD RE CS RS 3 8 A ran OE rc O OU RL SE AD ER a 3 8 EXAM Mod le a leleine 3 9 Power Supply BOALAS AA a 3 9 ERDM Modulo art assess erandit A eenia al aasa a enamale 3 9 EPBP Backplane asso a t t 3 9 ERESMA oc 3 11 DACA ACTO Del onverter usa ah sis aaa des iba dia 3 11 Related Board Publicanons ian 3 11 Chapter 4 Terminal Board I O and Equipment Connections 4 1 TAGE OCT Narco
71. ided equipment to the HMI Servers runs at 10 100 Mbaud and supports Peer to Peer communications VIHZ V Hz is the ratio of generator voltage to the frequency this is limited to prevent overfluxing the generator VME board Versa Module Eurocard a European standard for printed circuit boards and backplane warm backup Two bridges are connected to the field but only one is actively producing power The other bridge does not receive gating pulses until it is required to take over from the active bridge Windows NT Advanced 32 bit PC operating system from Microsoft Glossary of Terms ix Notes x Glossary of Terms GEH 6632 EX2100 User s Guide Index A ac disconnect 1 5 2 5 Ac Line to Line Filters 2 1 2 8 Ac to Dc Converter 1 6 2 14 3 1 3 9 3 11 B 1 ACLA see Application Control Layer Module Analog I O 4 1 4 2 Analog Input 4 1 4 3 Application Control Layer Module 1 6 2 11 2 13 2 14 3 1 3 2 3 4 4 19 4 20 AUTO REF see Auto Reference Auto Reference 2 1 2 20 Automatic Voltage Regulator 2 1 2 20 2 21 3 4 auxiliary cabinet 1 5 1 7 2 5 2 8 2 15 4 7 B 2 Auxiliary Cabinet 2 1 2 8 3 9 4 16 Ac Line to Line Filters 2 1 2 8 De excitation Module 2 1 2 8 3 1 3 6 3 8 3 10 3 11 4 11 Field Flashing Module 2 1 2 9 Field Ground Detector 2 1 2 9 3 7 4 1 4 14 4 15 High Voltage Interface 2 1 2 9 Shaft Voltage Suppressor 2 1 2 9 4 1 4 18 Auxiliary power source 2 2 AVR see Auto
72. ield voltage Test Mode The exciter is performing a diagnostic test Blank Exciter OK When no icon displays the exciter is operating correctly Abnormal Displayed when there are over ridden parameters Fault State Alarm state Displayed when an alarm condition occurs ih Trip fault Displayed when a fault state occurs blinking Stopped Exciter is stopped Status O Running Exciter is running Field voltage regulator output is greater than field current regulator or V Hz or UEL limits are active rh Offline Exciter is offline Exciter is online gt Limiting PP 5 6 Chapter 5 Diagnostic Interface Keypad GEH 6632 EX2100 User s Guide Changing Display Units gt To change the type of measurement units displayed 1 From the Main Menu select General Setup Select Display Units Select the display units parameter to edit it see below KANE T Highlight then select the preferred display units Press ENTER to accept ESC to leave Display units New Value Metric SI Present Value Metric SI Adjusting Display Contrast Shortcut Press and hold the gt To adjust the display contrast Menu key Press the Up and Down arrows to adjust the display contrast 2 Then select a Keypad b Keypad Functions c Adjust Screen Contrast 1 From the Main Menu select General Setup This displays the following screen CONTRAST ADJUSTMENT HOLD UP ARROW TO INCREASE HOLD DOWN ARROW TO DECREASE Pr
73. in an ac power cable DACA Ac to de converter for power supply produces 125 V dc GEH 6632 EX2100 User s Guide EX2100 User s Guide GEH 6632 DCS Distributed Control System Control system usually applied to control of boilers and other process equipment de excitation The de excitation circuit provides a conduction path through a discharge resistor to dissipate the field current after a unit trip device A configurable component of a control system DRAM Dynamic Random Access Memory used in microprocessor based equipment EGD Ethernet Global Data a control network and protocol for the controller Devices share data through EGD exchanges pages EMI Electro magnetic interference this can affect an electronic control system EPBP Backplane Exciter Power Backplane holds power supply modules ground detect modules and connectors for power distribution EPDM Exciter Power Distribution Module distributes 125 V dc to the power supplies Ethernet LAN with a 10 100 M baud collision avoidance collision detection system used to link one or more computers together 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 Glossary of Terms e iii iv e Glossary of
74. ing 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 The EDEX board contains Hall effect conduction sensors The sensors are mounted in the air gap of a circular steel core attached to the board They sense the magnetic field produced by the field discharge current flowing through the thyristor Two independent sensor circuits are used The EDEX fires the SCR when either of two control inputs is true or when the anode to cathode voltage of the SCR exceeds a certain value The two firing control circuits on the board are powered from separate power supplies and use separate conduction sensors making them mutually independent The actual control logic inputs used are dependent on the application When the exciter shuts down a P24 V firing control signal is sent to both de excitation module firing control circuits Both firing control circuits send gate pulses to fire the de excitation SCR At this point the main field polarity reversal has occurred making the SCR anode positive with respect to the cathode Therefore the SCR conducts
75. iter from unauthorized operation or reconfiguration the keypad includes two security controls Password and Privilege Level The Password is a 5 digit number that protects the Password and Privilege Level from being changed by unauthorized personnel The default Password is 00000 Privilege Level specifies which operational and configuration functions are disabled in the keypad There are three levels e Read Only disables both the Exciter Control and the Configuration functions An operator can view but not edit parameters e Operate amp Read Only enables the Exciter Control function but disables Configuration functions An operator can view but not edit parameters e Configure amp Operate enables both the Exciter Control and the Configuration functions This is the default setting If you try to execute a function that is disabled in the active Privilege Level the keypad displays the following error message Incorrect password Press Any Key to Continue Modifying the Protections gt To modify the Password and Privilege Levels 1 From the Main Menu select a General Setup b Keypad c Keypad Security The following screen displays Press ENTER to accept ESC to leave Enter Password 00000 5 14 e Chapter 5 Diagnostic Interface Keypad GEH 6632 EX2100 User s Guide EX2100 User s Guide GEH 6632 2 Enter the password as follows a Use the Up and Down Arrow buttons to index through the valid digits 0
76. l switches actuated by fan rotation monitor cooling air flow across the bridge On an exciter controls only retrofit the exciter may have provisions for accepting feedback from two thermal switches mounted on the SCR heatsink assemblies One thermal switch opens at the alarm level 170 F 76 C and the other at the trip level 190 F 87 C These switches are wired to the EGPA board and may require retrofitting into the existing bridge If either switch opens a bridge overtemperature alarm is generated If both switches open a fault and a trip are generated 2 6 e Chapter 2 Functional Description GEH 6632 EX2100 User s Guide Cooling Fan Assembly The SCR bridge assembly is cooled with forced air From two to six overhead fans are used depending on the bridge rating and redundancy requirements The fans are powered by single phase 115 V ac supplied by the customer In redundant applications a fan may be replaced while the exciter is running Main Dc Contactors 41A or 41A 41B Optional The main dc contactor at the output of the power conversion module provides a disconnect between the power conversion module and the generator field The contactor picks up when the running mode is selected and no fault exists in the excitation The contactors are normally actuated using pilot relays on the EXTB board driven by the controller The auxiliary contacts from the contactor are routed back through the EXTB board as feedback signals
77. lexible modular system that can be assembled to provide a range of available output currents and several levels of system redundancy These options include power from a potential compound or auxiliary source Single or multiple bridges warm backup bridges and simplex or redundant controls are available An overview of the turbine generator excitation system is shown in Figure 1 1 Power for the exciter is drawn from a power potential transformer connected to the generator terminals or from an excitation transformer connected to an auxiliary bus Generator line current and stator output voltage are the primary feedbacks to the exciter and dc voltage and current is the controlled output to the exciter field 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 Figure 1 2 is a simplified one line diagram of the exciter showing the power source generator current and voltage measurements control module power conversion module PCM and protection circuits In the potential source system the secondary of the PPT is connected to the input of a 3 phase full wave inverting thyristor bridge The inverting bridge provides both positive and negative forcing voltage for optimum performance Negative forcing provides fast response for load rejection and de excitatio
78. lies and I O terminal boards Diagnostic Interface Keypad The keypad is a local operator interface that is mounted on the control cabinet door Refer to Figure 2 4 for a view of the keypad and a summary of the operator and maintenance functions available Chapter 5 describes the keypad in detail EX2100 Excitation Control A Exciter Health FVR Feedback n DI ok State Icons 0 0 Volts 303 0 100 150 mm FldCurrAmps as fe T 0 00 Amps 30 0 100 150 LI 0 00 0 00 0 00 1 60 00 0 00 0 0 Te Y J Navigation Exciter Control gt On gt A a A i E __L Run Green i q j Reset Status h Auto L F R E Faults 3 E U L Menu ne Command Man ORI UA a Voltage Level O ff Escape E Enter 4 i q p O Ch Display Pushbuttons Status screens provide analog and digital representation of exciter functions and values Menu screens provide text based access to parameters wizards and faults Organized into functional groups Navigation buttons for using the menu Exciter Control buttons Run and Stop buttons Figure 2 4 Diagnostic Interface Keypad Start stop commands regulator transfer commands and regulator activation commands can be issued from the keypad The keypad also includes meter displays indicating system conditions such as generator MW and MV ARs field current and 2 10 e Chapter 2 Functional D
79. lue Laz Low Limit 0 0000000 High Limit 3 4028239e38 4 When all of the digits have been changed press Enter to accept the new value or press Escape to exit and keep the present value Parameter Backup It is good practice to keep a backup copy of the exciter s working parameter configuration You can then restore this file if needed or compare it with a re configured file to determine differences gt To save active parameters 1 From the Main Menu select Parameter Backup Functions then select Save Parameters to Backup Each new backup overwrites the previous backup copy which cannot be restored Save Parameters to Backup Save current parameter values Press ENTER to continue ESC cancels EX2100 User s Guide GEH 6632 Chapter 5 Diagnostic Interface Keypad 5 11 2 Press Enter to make a backup copy of the parameters or Escape to cancel gt Torestore a parameter from backup 1 Stop the exciter This function cannot be executed with the exciter running 2 From the Main Menu select Parameter Backup Functions then select Restore Parameters from Backup Press to restore Parameters from Backup WARNING The active parameter values will be replaced and can not be recovered Press ENTER to continue ESC cancels 3 Press Enter to restore the backup parameters or Escape to cancel Restoring parameters from a backup file overwrites the currently active parameter values which cannot th
80. matic Voltage Regulator AVR Setpoint 2 1 2 20 B bridge 1 2 1 5 1 6 2 2 2 5 2 9 2 11 2 14 2 19 3 1 3 2 3 5 3 7 4 3 4 8 4 9 4 16 B 1 B 2 Bridge and Protection Boards and Modules EDEX 2 1 2 8 3 1 3 6 3 8 3 10 3 11 4 11 EGDM 2 1 2 9 2 15 3 1 3 4 3 7 3 11 4 14 EGPA 2 1 2 5 2 6 2 11 2 14 3 1 3 4 3 5 3 7 3 9 EXAM 2 1 2 9 2 15 3 1 3 7 3 10 EXCS 3 1 3 7 Bridge Rectifier 2 5 C Cabinet Dimensions amp 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 5 6 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 1 7 2 1 2 4 2 6 2 8 2 11 2 13 2 14 2 17 2 19 2 20 2 21 3 1 3 2 3 4 3 9 3 11 4 3 4 4 4 8 4 11 4 14 4 16 4 19 5 1 5 2 B 3 Control Boards 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 EBKP 3 1 3 2 3 6 3 11 4 8 EISB 2 11 3 1 3 2 3 4 3 6 3 8 4 8 EMIO 2 11 3 1 3 2 3 4 3 6 4 3 4 4 4 16 4 17 ESEL 2 6 2 11 2 14 3 1 3 2 3 4 3 5 3 7 control cabinet 1 5 2 9 2 10 3 11 4 3 Control Cabinet 2 1 2 10 Control Module 2 1 2 11 Control Power Supplies 2 1 2 14 Diagnostic Interface 1 1 2 1 2 2 2 10 5 1 Redundant Control System 2 1 2 13 Simplex Control System 2 1 2 12 control module 1 2 2 6 2 11 2 14 3 4 4 14 4 16
81. measuring voltage in a power cable real time Immediate response referring to control systems that must respond instantly to changing conditions reboot To restart the controller or toolbox Redundant A system consisting of duplicated components boards or modules which can transfer functionality from a failed component to one of the duplicate components without loss of the entire system s functionality relay ladder diagram RLD A ladder diagram represents a relay circuit Power is considered to flow from the left rail through contacts to the coil connected at the right RFI Radio Frequency Interference this is high frequency electromagnetic energy which can affect the control system RTD 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 Glossary of Terms e vii viii e Glossary of Terms sampling rate The rate at which process signal samples are obtained measured in samples second serial loader Connects the controller to the toolbox PC using the RS 232C COM ports The Serial Loader initializes the controller flash file system and sets its TCP IP address to allow it to communicate with the toolbox over Ethernet server A PC which gathers data over Ethernet from plant devices and makes the data available to PC based operato
82. minal board cables EBKP has three sections for controllers M1 M2 and C Each section has 1ts own independent power supply Controllers M1 and M2 have the ACLA DSPX EISB EMIO and ESEL boards Section C only has the DSPX EISB and EMIO Two overhead fans cool the controllers The upper part of the backplane contains DIN connectors for the plug in control boards The lower part of the backplane contains D SUB connectors for I O interface cables and circular DIN connectors for keypad interface cables power supply plugs and test rings Labels on the connectors in Figure 3 1 refer to the boards and devices to which the cables are connected For more information refer to Chapter 4 and GEI 100460 DSPX Board The DSPX board is the main controller and shares control responsibility with the ACLA It is a single slot 3U high module located in the control rack next to the ACLA It provides functions including the bridge firing circuit control I O processing and inner loop regulation as follows e Field Voltage Regulator FVR e Field Current Regulator FCR e SCR gating signals to the ESEL board e Start stop function e Field flashing control e Alarms and trip logic e Generator instrumentation processing e Generator simulator For more information refer to Chapter 4 and GEI 100267 3 2 e Chapter 3 Printed Wiring Boards Overview GEH 6632 EX2100 User s Guide
83. n Excitation control results from phase controlling the output of the SCR bridge circuit The SCR firing signals are generated by digital regulators in the controller In the redundant control option Figure 1 2 either M1 or M2 can be the active master control while C monitors both to determine which should be the active and which the standby controller Dual independent firing circuits and automatic tracking is used to ensure a smooth transfer to the standby controller 1 2 e Chapter 1 Equipment Overview GEH 6632 EX2100 User s Guide Step up Transformer k Air Circuit Breaker 52G Current Transformers CTs Potential Transformers PTs m Exciter Power Turbine Generator TT RR l EX2100 Exciter Controlled dc to Field NEE E a a a E ioni ud E iii a a A A Power Conversion Module Bridge Ac Source Data Highway to Turbine lt Control HMI amp DCS y Control Sequencing Protection Potential Transformer PPT N a e PE a A A i i a a E i Instrumentation v y E ii SS SS iS ee SS li A tl Figure 1 1 Overview of Generator and Exciter System EX2100 User s Guide GEH 6632 Chapter 1 Equipment Overview 1 3 AC DC AC Load Diagnostic Unit Control Interface
84. n the de excitation module EDEX provides de excitation SCR firing conduction sense feedback and voltage retention to ensure operation in the event of a power failure EMIO initiates de excitation on the EXTB board The EXTB board opens the 41 dc contactor 41 A 41B or breaker and then transfers de excitation signals from the auxiliary contacts to SCR firing circuits on the EDEX There are two types of EDEX Group 1 board is designed for SCR de excitation Group 2 is designed for diode de excitation For more information refer to Chapter 4 and GEI 100466 EGDM Module The EGDM is a double slot double height 6U form factor board that mounts in the Exciter Power Backplane rack EPBP A simplex system has one EGDM while a redundant system has three EGDM detects field leakage resistance from any point in the field circuit of the generator to ground either on the ac or dc side The field ground detector applies a low frequency square wave to the sense resistor connected to the field circuit 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 Chapter 3 Printed Wiring Boards Overview 3 7 In a redundant system the set of three EGDM boards are configured as a Controller C Master 1 M1 and Master 2 M2 The configuration for each EGDM is controlled by a set of program pins on the P2 connector The C controller receives
85. nection iii 4 20 Chapter 4 Terminal Board I O and Equipment Connections 4 1 Power Connections and Analog I O Figure 4 1 displays a typical connection diagram of the common power and analog I O for an excitation system Customer Supplied A a A a is ice nea iaia ae Generator Field gt To Bridge 1 E EEE Control Cabinet PT1 PTSW1 H1 P oX i 6 2 N RISCN q E 4 ks H2 VA AG X2 3 4 or PT PT of c 8 od O ari H3 14424 X3 E 6 sl 9 5 lo O ae JP To i AN y _ JO EMIO PT2 PTSW2 14 I J3 M1 H1 P op re Xt i K 2 6 O 05 Rieu ezio O i H2 VAVAG X2 3 a Ke O To Cc oo eo Oras ne EMIO H3 1412 U X3 5 6 Steri ou J3 M2 Flow ae ae i O TA t 08 SES Ft cir L To CTSW1 TB2 gt EMIO pe i Ta J3 C E D 0 or L 15 E aa i CT gt rd ES E CTSW3 SH i i 2 1 INN JEE aiad cr lg plis ar O eo AI 1L EPCT en PPT MAC1 i i gt T ET E gi Power Conversion Cabinet i SE sele H2 ph C x2 AVAVA LA e i To Cic E seee Bd ane i 4719 OO oO OOO 0 SS S Phase Rotation 3 Note Circuits shown external to the exciter A are for reference only 2 Figure 4 1 Exciter AC Power Supply and PT CT Wiring 4 2 e Chapter 4
86. nitude required for a generator is set by configuring a maximum and minimum allowable value in the control module The current values are preset in the factory based on information supplied These values define the envelope in which the hysteretic flashing control holds the field current during the flashing sequence Flashing Control Sequence A start request is issued by the operator The optional field contactor s closes followed by contactor 53B then 53A When the field current reaches the maximum allowable field flash value typically 15 20 of AFNL contactor 53A opens and the field current decays through the freewheeling diodes If the control has not taken over before the current decays to the minimum field flash current setting typically 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 From Generator Shunt1 Station Battery Field Auxiliary Panel 125 Vdc Shaft Voltage Suppresser Current Limit Circuit P P70Vdc J5M1 M1 EMIO M2 K i D J5 M2 cai J5M2 M2 EMIO M1 Ma kalk J5 K53B relay E contacts JSC C EMIO M1 M2 LI ZA 14 95 M
87. nt as the feedback input The current setpoint is generally switched between a high level and lower level to provide transient forcing capability as well as steady state operation within the capability of the generator Generally the setpoint is larger than expected field currents and the integral preset is operational The FCR output is held at positive ceiling until enable becomes true which allows the output to follow the P I regulator The bridge firing command is the smaller of the FVR and FCR outputs While it does regulate constant field current over varying field temperature FCR is not the standard manual regulator Under Excitation Limiter UEL The UEL block is an auxiliary control to limit the automatic voltage regulator demand for underexcited reactive current or reactive power UEL prevents reduction of the generator excitation to a level where the small signal steady state stability limit or the stator core end region heating limit is exceeded Performance is specified by identifying the region of limiter action on the generator capability curve There is both a setpoint section and regulator section of the UEL The two key inputs are generator terminal voltage and real power Power System Stabilizer PSS The PSS block provides an additional input to the automatic regulator to improve power system dynamic performance A number of different quantities may be used as inputs to the PSS such as shaft speed frequency synchronous
88. ntact outputs controlled by the EMIO board Six auxiliary contact inputs are powered wetted with 70 V dc by ECTB Also the 52G and 86 G contact inputs are powered and monitored by ECTB In the redundant case power comes from the M1 and M2 power supplies For more information refer to Chapter 4 and GEI 100457 EXTB Board The EXTB board supports pilot relay contact outputs contact inputs and signal conditioning circuits EXTB cables to the EMIO board through the EBKP backplane Pilot relays for the breaker contactor close 41 and flashing contactors 53A and 53B are located on the board plus pilot relays for the trip relay 41T and the de excitation relay KDEP Crowbar status signals and de excitation status signals from the EDEX board are conditioned on EXTB and sent to EMIO Three contact inputs from 41 53A and 53B are powered wetted by 70 V dc on EXTB Power for the contacts is from the M1 and M2 power supplies redundantly and the resulting status signals are sent to EMIO in the control rack Different groups of EXTB are available for controlling either a field breaker or a contactor in the field circuit These groups are defined in Table 3 1 For more information refer to GEI 100458 Table 3 1 EXTB Board Groups Trip Relay Close Relay Type of Redundancy Board Control Mode 41T used 41 used Redundant control EXTB G1 Contactor Mode No Yes Redundant control EXTB G3 Breaker Mode Yes Yes Simplex control EXTB G2 Contactor Mode No Yes
89. ntification Testing and Evaluation of the Dynamic Performance of Excitation Control Systems High Potential Test Requirements for Excitation Systems Guide for the preparation of Excitation Systems Specs Recommended Practice for Excitation Systems for Power Stability Studies CE Compliance General Requirements for Dry Type Distribution amp Power Transformers Recommended Practice for Establishing Transformer Capability when supplying Non Sinusoidal Load Currents IEEE Guide for Transformers Directly Connected to Generators Surge Withstand Capability SWC tests for Protective Relays and Relay Systems Practices and Requirements for Semiconductor Power Rectifier Transformers Appendix B Ratings and Specifications e B 3 Notes B 4 s Appendix B Ratings and Specifications GEH 6632 EX2100 User s Guide Glossary of Terms EX2100 User s Guide GEH 6632 6U Full height Versa Module Eurocard VME board application code Software that controls the machine or process specific to the application ASCII American Standard Code for Information Interchange An 8 bit code used for data auxiliary source A source of three phase ac power for the exciter but not from the generator being controlled automatic voltage regulator AVR AVR is controller software that maintains the generator terminal voltage through the Field Voltage Regulator baud A unit of data transmission Baud rate is the number of bits per second tr
90. ocessor based controllers 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 O operator interface 1 2 2 10 P PCM see Power Conversion Module Potential transformers 1 7 B 2 Power Connections 4 1 4 2 power conversion cabinet 1 5 2 8 Power Conversion Cabinet 2 1 2 5 4 11 Free Wheeling Diode 2 1 2 7 Gate Pulse Amplifiers 2 1 2 6 Main Dc Contactors 2 1 2 7 Manual Ac Disconnect 2 1 2 5 Power Converter Module 1 6 2 1 2 5 power conversion module 1 2 1 6 1 7 2 1 2 2 2 5 3 5 3 7 4 14 B 1 B 3 Power Conversion Module 1 2 1 6 1 7 2 1 2 2 2 5 3 5 3 7 4 14 B 1 B 2 B 3 Power Converter Module 1 6 2 1 2 5 Power potential transformer 1 2 2 2 2 5 2 9 3 7 4 3 4 14 Power Potential Transformer 4 1 4 3 power source 1 2 3 7 Power Supply Boards DACA 1 6 2 14 3 1 3 9 3 11 B 1 EPBP 2 14 2 16 3 1 3 8 3 9 3 11 EPDM 2 14 2 16 3 1 3 7 3 9 3 11 4 6 EPSM 2 12 2 14 3 1 3 9 3 11 Power Supply Inputs 4 1 4 6 Power System Stabilizer 2 1 2 17 3 4 PPT see Power potential transformer PPT see Power Potential Transformer PSS see Power System Stabilizer R RAM 1 6 Ratings and Specifications 1 1 Redundant ac source 2 2 Redundant Control System 2 1 2 13 Related Documents 1 1 1 8 S SCR 1 2 1 5 2 5 2 8 3 2 3 5 3 8 4 8 4 9 4 11 SCR De excitation Modul
91. ol Auxiliary Contactors amp Cabinet Cabinet Disconnects Fan Drawers Power Conversion Cabinet Keypads Figure 1 3 Exciter Cabinets EX2100 User s Guide GEH 6632 Chapter 1 Equipment Overview 1 5 Software Overview Microprocessor based controllers ACLA and DSPX execute the exciter control code The software consists of modules blocks combined to create the required system functionality Block definitions and configuration parameters are stored in flash memory while variables are stored in random access memory RAM The exciter application software emulates traditional analog controls It uses an open architecture system with a library of existing software blocks configured from the toolbox The blocks individually perform specific functions such as logic gates
92. point aus PSS V Hz Limit Reactive AVR Power Current Setpoint Slip System Compen and Stabilizer sation Tracking Frequency Watts UEL VMAG AVR VARS Automatic Generator E ais oa A FVR Terminal n rl SORA Track Voltage imi Value VMAG Setpoint FVR External Field Voltage Regulator Setpoint Field Raise MANUAL Voltage M Lower REF Regulator Firing Commd to Bridge Min FCR Setpoint Field Volts from Bridge Output User Input FCR Field Current Regulator Field Current from Bridge DC Shunt 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 Chapter 2 Functional Description 2 19 Auto Reference AUTO REF The AUTOREF block generates an auto or Auto Control AC setpoint for the Automatic Voltage Regulator AVR based on user supplied parameters and conditions Raise lower inputs to AUTO REF come in from the other devices on the Data Highway such as the turbine control or HMI A variable rate integrator generates the output setpoint within preset limits The setpoint is combined with other auxiliary stabilizing and protective signals in the EXASP block to form the reference to the AVR block AVR Setpoint EXASP The EXASP block combines a number of functions to produce the setpoint reference input to the AVR and
93. proportional integral P I regulators function generators and signal level detectors The control selects one of two modes either generator voltage regulation Auto Regulation or direct control voltage or current depending upon the application Generator protection functions are integrated into the control including over and under excitation limiting power system stabilization and V Hz limiting The blocks can be interrogated while the exciter is running by using the toolbox The dynamically changing 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 Unit Specific ratings are provided on equipment nameplate and supercede all information herein Caution EX2100 Characteristics Power Converter Module PCM Single bridge rating Parallel bridge rating Forcing requirements Power Sources Power for the PCM Voltage source Power Input for the PCM VA Power for the PCM Frequency Flashing power Control power 1 6 Chapter 1 Equipment Overview Description 1 000 and 2 000 A dc at up to 1 000 V ac 8 000 A dc at up to 1 500 V ac with up to 6 bridges 150 of design Amperes EDA for 30 s at 40 C Auxiliary bus Generator terminals Compound source 600 or 1 000 V ac versions 3251 kVA 1 000 V version 3 phase 50 60 Hz Ba
94. r interfaces known as Viewers shaft voltage suppressor The shaft voltage suppressor is a filter that conducts to ground the high frequency components of the induced voltages in the field current signal The basic unit for variable information in the controller simplex System with only one set of control and I O boards Contrast with redundant control systems simulation Running the control system using a software model of the generator and exciter SOE Sequence of Events a high speed record of contact closures taken during a plant upset to allow detailed analysis of the event Static Exciter Produces a controlled de field current without the use of a rotating generator TCP IP Communications protocols developed to inter network dissimilar systems It is a de facto UNIX standard but is supported on almost all systems TCP controls data transfer and IP provides the routing for functions TMR Triple Modular Redundancy An operation that uses three sets of control and I O channels M1 M2 and C and votes the results GEH 6632 EX2100 User s Guide EX2100 User s Guide GEH 6632 toolbox 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 prov
95. r voltage magnitude and generator frequency derived from the PTs e The magnitude of generator current derived from the CTs e Generator power P e Generator reactive volt amperes VARs Q e Change in rotor speed calculated from the integral of accelerating power that is normally used as the input to the optional Power System Stabilizer PSS e Generator active and reactive current e Magnitude of generator flux VHz e Line voltage derived from the PTs e Line frequency derived from line PTs e Phase angle correlation between the generator and line derived from generator and line PTs Chapter 2 Functional Description e 2 17 Voltage Current Sensing DC i Regulator di DC Voltage dae o O 0 gt Generator o gt Bridge AC Regulator do gt AC AAAA Voltage adjust Exciter System Stabilizer Circuits Over excitation A Limiter Under excitation Limiter V Hz Limiter amp Protection VAR Power Factor lt Control Voltage Sensing amp Load Compensation Power System Stabilizer Figure 2 10 Control Scheme 2 18 e Chapter 2 Functional Description GEH 6632 EX2100 User s Guide Reactive External AUTO Current Raise REF Lower Setpoint siii Exciter AVR ua Set
96. rameters lists valid digits that you select to create a number gt To edit a parameter 1 From an exciter Parameters screen select the parameter that is to be changed Parameters GPT_Vrms lt No Value gt VHiTripLev Laz AFFL 100 TripVHiTrip Trip enabled VFFL 100 100 0 This displays either an Option or Numeric parameter screen see both below with the New Value line highlighted 5 10 e Chapter 5 Diagnostic Interface Keypad GEH 6632 EX2100 User s Guide 2 For an Option parameter Use the Up or Down Arrow buttons to select a new parameter value b Press the Enter button to accept the change or Escape to exit and keep the present value Press ENTER to accept ESC to leave TripVHiTrip New Value Trip disabled Present Value Trip enabled 3 Fora Numeric parameter a Use the Left or Right Arrow buttons to highlight the digit to be changed If you continue pressing the Left Arrow button after reaching the left most digit of the edit field the field fills with blanks Pressing Enter when the entire number is blanked out saves a lt No Value gt b Use the Up and Down Arrow buttons to index through the valid digits 0 1 2 3 4 5 6 7 8 9 e The e in the digit selection represents the start of the exponent in scientific notation If the e is used all digits to the right of the e make up the number s exponent Press ENTER to accept ESC to leave VHiTriplev New Value 1 3 Present Va
97. rol I O and Operator Keypad I O and Operator Keypad C Control Selection Logic amp Protection C Control Selection Logic amp Protection Dual Control with Parallel PCMs M1 Control I O and PCM PCM PCM PCM PCM PCM Operator 4 2 3 4 5 6 Keypad M2 Control I O and Operator Keypad C Control Selection Logic amp Protection Figure 2 2 Dual Control System Configurations 2 4 Chapter 2 Functional Description GEH 6632 EX2100 User s Guide Power Conversion Cabinet The Power Conversion cabinet contains the Power Conversion Module PCM the Exciter Gate Pulse Amplifier EGPA board ac circuit breaker and the dc circuit contactor Three phase power for the PCM comes from a PPT external to the exciter The ac supply comes into the cabinet through the ac circuit breaker if supplied and 1s filtered by 3 phase line filters in the auxiliary cabinet Manual Ac Disconnect Optional The manual ac disconnect switch serves as a disconnect device between the secondary of the power potential transformer and the static exciter It is a molded case 3 phase non automatic panel mounted switch which is manually operated for isolating the ac input supply It is a no load disconnect device Power Conversion Module PCM The exciter PCM includes the bridge rectifiers dc leg fuses thyristor protection circuitry for example snubbers filters and fuses and leg reactor assemblies The components vary for diff
98. rol amp auxiliary Cabinet type power conversion Power and Control Cable Access Reliability MTBF Mean Time Between Failures MTBF Mean Time Between Failures MTTR Mean Time to Repair Acoustic Generated Acoustic Noise Preliminary Codes and Standards UL 508C CSA 22 2 No 14 UL 796 ANSI IPC IEC 801 2 1991 ENV 50140 1993 EN 50082 2 1994 IEC 801 4 IEC 1000 4 5 IEC 1000 4 6 ENV 55011 1991 EN 61010 1 IEC 529 IEEE 421 1 IEEE 421 2 IEEE 421 3 IEEE 421 4 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 Ibs 5 600 Ibs NEMA 1 IEC IP 20 convection cooled NEMA 1 IEC IP 20 forced air cooled Entrances from the top and or bottom Simplex system 25 000 hrs Redundant system 175 000 hrs Any subsystem 4 hrs PCM cabinet approximately 75 dB Safety Standard Industrial Control Equipment Industrial Control Equipment Printed Wire Board Assemblies Guidelines Electrostatic Discharge Susceptibility Radiated RF Immunity Generic Immunity Industrial Environment Electrical Fast Transient Susceptibility Surge Immunity Conducted RF Immunity ISM Equipment Emissions Safety of Electrical Equipment Industrial Machines Intrusion Protection Codes NEMA 1 IP 20 Standard Definitions for Excitation Systems for Synchronous machines Guide for Ide
99. s used but this can have both ac and dc supplies for increased reliability Keypad Control Module M1 Computer Tool To Flashing 3 phase panel Voltage 5 Sensing 2 T 41 Device 2 De E excitation 3 ph 5 O i Lan Crowbar Current O TT AS 70 V de n 125 Vdc Y LL Contact Inputs Es p gt E O Loo o Gate Pulse Amplifier lt q 125Vdc N Field Current EDCF amp Voltage PPT and air core CT EACF ac feedbacks GPA power 125 Vdc excitation j eo Option 125 V dc DACA Optional Battery Crowbar Rectified ac Figure 2 5 Simplex Control and Cabling to Terminal Boards 2 12 e Chapter 2 Functional Description GEH 6632 EX2100 User s Guide Redundant Control System A redundant control system has three controllers and three redundant power supplies one for each controller The power supply rack also holds three ground detector modules Figure 2 6 shows three EDCF boards and there can be three EPCT boards 1f required Up to two Ethernet cables are connected to the ACLA controllers one to M1 and one to M2 for redundant communication with the turbine control and HMIs
100. ser s Guide Data Highway Connections The Data Highway integrates The EX2100 exciter communicates over the same data highway as the Mark VI several different single turbine control and the HMI A typical exciter connection to the redundant Unit Data control systems Highway UDH network is shown in Figure 4 12 This shows redundant control with two ACLAs The UDH is implemented using commercially available fast Ethernet switches 10Base T cabling is used for short distances between the controller and the T switch and any local HMI The 10BaseT ports in the ACLA and the T switch are for RJ 45 connectors The maximum distance for local traffic at 10 Mbps using unshielded twisted pair cable is 100 m 100Base FX fiber optics can be used for longer distance communication between the local controllers and the central control room The 100BaseFX ports in the T switch and the Ethernet switch are for SC type fiber optic connectors The maximum distance at 100 Mbps using 100BaseFX fiber optic cables is 2 km Redundancy can be obtained by using two T switches with an interconnecting cable Central Control Room Fast Fast Ethernet Ethernet Switch A Switch B From other Units 100Base FX connections From other Units OO T SwithA 09799799 000000000008 TSwitcthB o 000000000000 Tolocal HMI 4 Viewer 10Base T
101. signals are input into a differential amplifier which controls the voltage controlled oscillator 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 Chapter 4 Terminal Board I O and Equipment Connections s 4 9 Control Cabinet Auxiliary Cabinet EDCF 1 VCO EISB M1 L1 L2 ee STR GRY SA IZ RIO Control Cabinet EXTB 41 M1 K41 M2 AAA K41 M2 K41 C a K K41 C K41 M1 Control Rack P70V Duplex Fiber Optic Link Voltage Generator pol Field PSM1 14 EK lt Pa wH l P125 a ui PPT Scaling J3 44 JO To Bridge 2 J2 3M 41A Dc Shunt Generator Field O BK WH Auxiliary Cabinet Generator Field J505 J505 DES Dm a IEMIO M2 gt i Feedback OV l l l Return Figure 4 6 DC Field Circuit Contactor and Control Board 4 10 Chapter 4 Terminal Board I O and Equipment Connections GEH 6632 EX2100 User s Guide De Excitation Dur
102. so communicates between the DSPX and the tool and keypad ports using RS 232C EISB is a single slot 3U high module that is located in the control rack under the DSPX From six fiber optic connectors on the front panel it accepts current and voltage signals from the generator field and from the exciter if required using EDCF boards and receives and transmits signals to the Ground Detection Module EGDM For more information refer to Chapter 4 and GEI 100454 EMIO Board The EMIO 1s a single slot double height VME style board that manages the I O from the EPCT ECTB EACF and EXTB terminal boards The I O include PT and CT signals contact inputs output relay drivers and pilot trip relay drivers It also sends logic level gate pulse signals over the backplane to the ESEL board which sends them to EGPA in the power conversion cabinet For more information refer to Chapter 4 and GEI 100453 ESEL Board The Exciter Selector board receives six logic level gate pulse signals from its corresponding EMIO These pulse signals drive up to six sets of cables which are distributed to the exciter gate pulse amplifier EGPA boards The EGPA boards are mounted in the power conversion cabinet If there are redundant controls two ESEL are used one driven by M1 and the other by M2 The active ESEL selected by controller C sends the necessary control signals to the EGPA boards Three groups of ESEL boards are available supporting increasing redundancy
103. splay you can view information and reset clear current faults as follows 1 From the Main Menu select Fault List then select Display Active Faults The following screen displays ACTIVE FAULT DISPLAY 86 Trip DC Over current Trip 115 TELP Bridge 1 Fan 1 BAD 58 Brief Low AC V 95 Field temp alarm RESET FAULTS NOW Refer to GEH 6633 Troubleshooting Preventive and Online Maintenance for a list of faults Chapter 5 Diagnostic Interface Keypad e 5 9 2 To view detail on a particular fault select that fault listed on the Active Fault Display screen The following screen displays SELECTED FAULT PRESS AC V B 006240 11 008 AC input volts detected on field exciter 3 Reset the faults either of two ways Select Reset Faults Now in the Fault Display screen Press the Reset Faults button gt To view the exciter s Fault History a list of previously cleared faults and fault resets This display list may be e From the Main Menu select Fault List then select Display Fault History multiple screens long FAULT HISTORY DISPLAY 0 Cleared Fault reset 86 Trip DC Over current trip 115 trip Bridge 1 Fan 1 BAD 58 Brief Low AC V 95 Field temp alarm RESET FAULTS NOW Editing Parameters There are two types of parameters that can be changed using the keypad e Option parameters lists items options for you to select For example True False is an option parameter e Numeric pa
104. stomer keep a set of spare parts on hand The Renewal Parts Ouotation lists recommended spares Appendix A of this manual provides information to help the user identify and obtain replacement parts It is organized as follows Section Page a AS MAA RTOS A a A 2 Rivoglio A 2 Part Number SITU diia A 2 A a aaa alla do Di A a A 4 Howto Order Patricia A 5 Data Name platea A acess anta A 5 MENTE Lalla A 5 Appendix A Warranty and Renewal Parts A 1 ldentifying the Part An exciter component or part is identified by its assigned part number and description The part number is normally found on a nameplate on the component The description is included in the system renewal parts list Renewal Parts List The Renewal Parts List is a separate document that lists the parts of a complete system This list applies specifically to the equipment furnished on a customer s particular application requisition at the time of shipment It includes e Part numbers and descriptions e Quantity used e Recommended spares to keep onhand e Normal delivery cycle for obtaining each part GE provides the Renewal Parts List with the exciter s custom instructions If this document is missing contact the nearest GE sales office or service representative to obtain a replacement copy You need to provide the following information see Figure A 4 to correctly identify the system e Requisition number e Model number Part Number Structure A GE p
105. t Arrow button displays next level up in menu tree Entry of Numeric Parameter Used to select a digit when editing a parameter A gt i Entry of Option Parameter or Command Execution Not functional 401 54 Menu Navigation Displays the next level up in menu tree Escape e Entry of Parameter Displays the parameter list E i Menu Navigation Displays the next level down in menu tree Enter u Entry of Parameter Accepts editing of parameter EX2100 User s Guide GEH 6632 Chapter 5 Diagnostic Interface Keypad s 5 3 Table 5 2 Exciter Control Pushbuttons Button Function Reset Resets faults foul leg Quick access to a list of commonly used commands ato Selects Auto mode AC regulator or AVR Man Selects Manual mode DC regulator or FVR E Increase voltage VARS PF Decrease voltage VARS PF Run Stop CIO 5 4 e Chapter 5 Diagnostic Interface Keypad GEH 6632 EX2100 User s Guide Reading the Display The keypad displays information as both text and animated graphics There are two types of content screens selected by pressing the corresponding Navigation button Status and Menu The Status Screen Figure 5 2 is the default screen that displays after exciter startup following an initialization screen It uses animated meters with associated text to present exciter performance data An alternate Status Screen can also be accessed see Status Screen Heartbeat Text Identifying Anim
106. terminals for the 125 V de battery source and the 115 V ac suply ACI A second ac supply AC2 can also be connected O EPDM Exciter Power Distribution Module P125Vdc 125 V dc MI a P125Vde from battery N125Vdc O P125Vdc N125Vdc x O 115 O 115 V ac supply 1 O ls x O 1 115 V ac AC2N 60 E supply 2 AC2N 160124 9 IDAGA Figure 4 3 Power Wiring Connections to EPDM 4 6 Chapter 4 Terminal Board I O and Equipment Connections GEH 6632 EX2100 User s Guide Line Filter Connections The 600 V filter is connected to fuse board LFU1 The 1000 V filter has two filter circuits and 1s connected to fuse boards LFU1 and LFU2 The filters are located at the top of the auxiliary cabinet Connections to the line filter are shown in Figure 4 4 Auxiliary Enclosure Control DE E ct o i gi Enclosure Linefilter EACF1 Coil H cor gt Coil2_H gt From PPT Ea q x gt L1 L2 L3
107. tive load 0 1 A Continuous operation in a 0 to 40 C ambient environment with 5 to 95 humidity non condensing Continuous operation in a 0 to 40 C ambient environment with 5 to 95 humidity non condensing Width 141 74 in 3600 mm Height 104 32 in 2650 mm Depth 31 5 in 800 mm 3 600 Ibs 5 600 lbs NEMA 1 IEC IP 20 convection cooled NEMA 1 IEC IP 20 forced air cooled Entrances from the top and or bottom Chapter 1 Equipment Overview 1 7 How to Get Help indicates the If help is needed beyond the instructions provided in the drive system international access code documentation contact GE as follows required when calling from GE Industrial Syst outside of the USA ndustrial systems Product Service Engineering 1501 Roanoke Blvd Salem VA 24153 6492 USA Phone 1 888 GE4 SERV 888 434 7378 United States 1 540 378 3280 International Fax 1 540 387 8606 All Related Documents The following documents also apply to the exciter and may assist in understanding the system GEI 100256C EX2100 Receiving Storage amp Handling GEH 6631 EX2100 Installation and Startup Guide GEH 6633 EX2100 Troubleshooting Preventive and Online Maintenance 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 eguipment provi
108. trical Manufacturers Association a U S standards organization non volatile Memory specially designed to store information even when the power is off for example Flash memory OLR On Line Repair capability provided by redundant control elements over excitation limiter OEL OEL software limits the excitation current to prevent overfluxing the generator power conversion module PCM The PCM or Bridge consists of six three phase rectifiers with associated protection and control devices to generate the dc field current power current transformer PCT A PCT can be attached to the generator line to provide a portion of the three phase power for the exciter part of a compound source power distribution module EPDM The PDM distributes 125 V dc to the power supplies for the controllers and I O termination boards power potential transformer PPT 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 GEH 6632 EX2100 User s Guide EX2100 User s Guide GEH 6632 product code runtime Software stored in the controller s Flash memory that converts application code pcode to executable code PRV Peak Reverse Voltage 1s limited with pole slip resistors wired across the SCRs PT Potential Transformer used for
109. ttery source 125 V dc or 250 V dc with up to 200 A for at least 10 s 240 or 480 V ac 50 60 Hz single phase auxiliary source For two ac sources or one ac and one dc source Nominal 120 V ac 15 with 1 DACA 10 A rms max Battery source 125 V dc range 80 140 V dc 10 6 A dc max GEH 6632 EX2100 User s Guide Input Output Potential transformers PTs Current transformers CTs 1 or 5 A 86G dedicated contact input 52G dedicated contact input Trip rated contact outputs General Purpose contact inputs General Purpose Form C contact outputs 10 V differential amplifier input Thermal Base controls cabinet Base power conversion and auxiliary cabinet Cabinet Dimensions amp Weight Redundant control with dual PCM redundant converter in a three cabinet lineup Weight of Converter cabinet Weight of Total Lineup Converter Control and Auxiliary cabinets Cabinet type control amp auxiliary enclosures Cabinet type power conversion Power and Control Cable Access EX2100 User s Guide GEH 6632 QTY 2 3 phase standard single phase available 120 V ac nominal 1 VA nominal burden 2 Any two phases single phase available 1 VA nominal burden 1 open for trip 1 closed for online 2 At 125 V dc with relay break characteristics Resistive load 0 5 A Inductive load 0 2 A 6 Customer contacts 70 V dc supplied by ECTB 4 At 125 V dc with relay break characteristics Resistive load 0 5 A Induc
110. tus Screen 5 1 5 3 5 5 5 8 Using the Menus 5 1 5 9 Using the Pushbuttons 5 1 5 2 Diagnostic Interface keypad 1 1 2 1 2 2 2 10 3 2 3 4 5 1 5 2 5 5 5 6 5 8 5 9 5 10 5 13 5 15 Digital Signal Processor Control Board 1 6 2 11 3 1 3 2 3 4 3 8 4 14 4 20 5 13 Document Distribution 1 1 1 8 DSPX see Digital Signal Processor Control Board Dual Control System Configurations 2 4 E EACF see Exciter AC Feedback Board EBKP see Exciter Backplane ECTB see Exciter Contact Terminal Board EDCF see Exciter DC Feedback Board EDEX see De excitation Module EDEX see Exciter De excitation Board EGDM see Exciter Field Ground Detector Module EGPA see Exciter Gate Pulse Amplifier Board EISB see Exciter ISBus Board EMIO see Exciter Main I O Board EPBP see Exciter Power Backplane EPCT see Exciter PT CT Board EPDM see Exciter Power Distribution Module EPSM see Exciter Power Supply Module ESEL see Exciter Selector Board Ethernet 1 2 2 11 2 13 3 4 3 10 4 19 4 20 EXAM see Exciter Attenuator Module EXASP see AVR Setpoint Exciter AC Feedback 3 5 3 7 3 11 4 1 4 7 4 8 Exciter AC Feedback Board 2 9 3 1 3 4 3 5 3 7 4 3 4 8 Exciter Attenuator Module 2 1 2 9 2 15 3 1 3 7 3 9 3 10 Exciter Backplane 3 1 3 2 3 6 3 11 4 8 Exciter Conduction Sensor Board 3 1 3 7 Exciter Configurations 2 1 2 3 ii e Index Exciter Contact Terminal Board 1 7 2 15 3 1 3 4
111. us fed e Crowbar module for hydro and other special applications e Dc Disconnect e Field ground detector e Redundant ac source for power supply e Ac disconnect e Field flashing module e Redundant controllers providing a Triple Modular Redundant TMR system e GE Control System Toolbox toolbox for configuration 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 2 2 e Chapter 2 Functional Description GEH 6632 EX2100 User s Guide 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 Simplex Control with Single PCM Parallel PCMs Control with Control with PCM PCM PCM PCM PCM PCM I O and I O and 1 2 3 4 5 6 Operator Operator Keypad Keypad Figure 2 1 Simplex Control Configurations EX2100 User s Guide GEH 6632 Chapter 2 Functional Description 2 3 Exciters with dual redundant control are shown in Figure 2 2 Multiple PCMs can be supplied in simplex warm backup or redundant n 1 or n 2 modes with n 1 or n 2 equal to 6 Dual Control with Dual Control with Single PCM Warm Backup PCMs M1 Control M1 Control I O and I O and Operator Keypad M2 Control Operator Keypad M2 Cont
112. ve load 0 5 A Inductive load 0 1 A Proportional Integral software implemented 0 25 over full voltage range Proportional Integral software implemented 2 0 over full voltage range Under Excitation Limiter UEL Over Excitation protection 76 Generator Field Ground detection 64F Generator Overvoltage protection 24G Loss of Excitation protection 40 V Hz limit 24 and trip 24T Bridge Over Temperature 26 Field Over Temperature 49 Phase Unbalance 22 PT Failure 60 Continuous operation in a 0 to 40 C ambient environment Continuous operation in a 0 to 40 C ambient environment with 5 to 95 humidity non condensing 40 C to 70 C 5 to 95 humidity non condensing Normal operation at 0 to 1000 m Derate 6 per 1000 m above 1000 m Forced air cooling required for PCM cabinet Reactive Sulfur Reactive Chlorine Hydrogen Sulfide Sulfuric Acid Hydrochloric Acid Hydrogen Chloride Ammonia Sulfur Dioxide Chlorine Dioxide Universal Building Code UBC Seismic Code section 2312 Zone 4 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 GEH 6632 EX2100 User s Guide Cabinet Dimensions amp Weight Redundant control with dual PCM redundant converter in a three cabinet lineup Weight of Converter cabinet Weight of Total Lineup Converter Control and Auxiliary cabinets Cabinet type cont

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