GE IS200TDBTH6ABC TDBT Discrete I O Terminal Board Mark VI Turbine & EX2100 Excitation

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    • Product Code: IS200TDBTH6ABC
    • Availability: In Stock
    GE IS200TDBTH6ABC TDBT Discrete I/O Terminal Board Mark VI Turbine & EX2100 Excitation
    Manufacturer: GE Gas Power Speedtronic Controls
    Model: IS200TDBTH6ABC TDBT Simplex Discrete Terminal Board
    Compatible Platform: Mark VI Speedtronic gas/steam turbine rack, EX2100 digital excitation rack
    Type: VME slot hot-swappable discrete DI/DO signal termination & isolation board
    Core Function: 24-channel isolated contact DI acquisition, 12-channel Form-C relay DO output, ISBus backplane communication, full channel self-diagnosis, field signal isolation & wiring hub
    1. Product Overview
    IS200TDBTH6ABC (TDBT) is a simplex discrete I/O termination board exclusively for GE Mark VI turbine control and EX2100 generator excitation systems. It acts as the signal interface between field mechanical contact devices and the core DSPX main processor board (IS200DSPXH1DBD). It integrates 24 optically isolated digital input channels for collecting valve limit switches, breaker status, pressure/temperature trip contacts, and 12 independent Form-C relay dry contact outputs for driving on-site actuators and alarm equipment. All signal circuits adopt surge suppression and EMI filtering to eliminate industrial high-frequency interference from excitation SCR cabinets and variable frequency drives. Front panel terminals concentrate all field wiring to simplify cabinet maintenance; rear VME gold-plated connectors exchange real-time discrete data with the rack backplane ISBus. Three front-panel LEDs display operation, communication and hardware fault status, with timestamped fault alarms uploaded to operator stations. Conformal coated PCB supports wide temperature, high vibration turbine cabinet environments, hot-swap design allows online replacement without system shutdown. GE discontinued original new production, only refurbished and surplus spare parts available aftermarket.
    2. Full Technical Specifications
    • Digital Inputs: 24 isolated wet contact DI channels, 24~125VDC input range
    • Digital Outputs: 12 Form-C SPDT relay dry contacts, 2A@30VDC / 0.5A@125VAC rating
    • Isolation: Optocoupler isolation per channel, 1500VAC channel-to-backplane isolation
    • Surge Protection: MOV varistor + RC filter on every input channel
    • Backplane Bus: Proprietary ISBus serial communication for Mark VI rack
    • Hot Swap Support: Yes, online replacement without rack power cut
    • Diagnostic Indicators: 3 front panel LEDs (RUN, FAULT, COMM)
    • Rack Supply: 24VDC / 5VDC from VME backplane
    • Typical Power Consumption: 6.8W
    • Operating Temperature: -40℃ ~ +65℃ ventilated turbine control cabinet
    • Humidity: 5% ~ 95% RH non-condensing
    • Mechanical: Standard single-width IS200 VME slot card, front terminal block + D-Sub connectors
    • Certifications: CE, UL industrial power generation safety certification
    3. On-board Hardware Layout
    1. Front panel: 3 status LEDs, multi-row terminal blocks, D-Sub field wiring connectors, fixing screws
    2. 24-channel opto-isolated DI signal conditioning & surge suppression circuit
    3. 12 independent Form-C relay drive & isolation modules
    4. ISBus communication control chip for backplane data exchange
    5. Rear dual-row gold-plated VME backplane connector for power & bus signal
    6. Conformal coated PCB with test points for on-site troubleshooting
    4. System Hardware Matching Chain
    • IS200TDBTH6ABC (TDBT): Discrete signal termination isolation board (field wiring interface)
    • IS200DSPXH1DBD (DSPX): Mark VI main real-time control CPU, executes interlock & trip logic
    • DS200SDCCG5AHD (SDCC): EX2000 excitation main control board, exchanges excitation discrete signals via ISBus
    • Field devices: Limit switches, breaker auxiliary contacts, trip relays, alarm horn, solenoid valves
    • Full signal chain: Field contact signal → IS200TDBTH6ABC isolation & conversion → ISBus backplane → DSPX logic calculation → relay output drive via TDBT → on-site actuator/alarm
    • Platform Separation: Cannot be inserted into Mark V, Honeywell System57, Emerson Ovation racks, exclusive Mark VI VME hardware
    5. Typical Industrial Application Scenarios
    • Combined-cycle gas turbine Mark VI control rack: Lube oil system, fuel gas system, valve position, trip contact signal acquisition & alarm output
    • Coal-fired steam turbine EX2100 excitation cabinet: Generator protection relay state, excitation fault hard alarm contact output
    • Industrial cogeneration gas turbine unit: Auxiliary water pump, ventilation fan sequence interlock discrete signal processing
    • Hydropower synchronous generator control retrofit: TMR triple redundant discrete safety signal collection & trip output
    GE Gas Power © IS200TDBTH6ABC TDBT Discrete I/O Terminal Board Mark VI Speedtronic Turbine & EX2100 Excitation System


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