GE IS200SDIIH1ADB MRP683026 SDII Simplex Discrete Input Terminal Board Mark VI EX2100

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    • Product Code: IS200SDIIH1ADB MRP683026
    • Availability: In Stock
    GE IS200SDIIH1ADB MRP683026 SDII Simplex Discrete Input Terminal Board Mark VI / EX2100
    Manufacturer: GE Gas Power Speedtronic Controls
    Part No.: IS200SDIIH1ADB | MRP Code: MRP683026
    Model: SDII Simplex Discrete Input Terminal Board
    Compatible Platform: Mark VI / Mark VIe Turbine Rack, EX2100 Digital Excitation Rack
    Type: VME slot hot-swappable DI signal isolation termination board, simplex only (non-TMR trip)
    Core Function: 24-channel optically isolated wet contact DI acquisition, field signal wiring hub, ISBus backplane communication, full channel self-diagnosis, EMI surge suppression
    1. Product Overview
    IS200SDIIH1ADB (SDII, MRP683026) is a simplex discrete input termination board exclusively for GE Mark VI/VIe gas/steam turbine and EX2100 generator excitation control systems. It only collects 24-channel field wet contact signals without relay output circuits. Each digital input channel adopts optocoupler isolation plus MOV+RC surge filter to suppress high-frequency EMI from excitation SCR cabinets and variable frequency drives. Dual-side screw terminal blocks centralize all field wiring for easy cabinet maintenance. Rear VME gold-plated connector communicates with rack main processor via proprietary ISBus serial bus to upload real-time contact status. Three front-panel LEDs indicate running, communication and hardware fault status, with timestamped fault alarms sent to operator HMI. Conformal coated PCB supports wide temperature industrial cabinet environments, hot-swap design allows online replacement without system power cut. GE discontinued original new production, only refurbished and surplus spare parts available aftermarket.
    2. Full Technical Specifications
    • Digital Input Channels: 24 isolated wet DI channels, no output relays
    • Input Voltage Range: 24 ~ 125VDC wet contact
    • Channel Isolation: Optocoupler isolation, 1500VAC channel-to-backplane withstand voltage
    • Surge Protection: MOV varistor + RC low-pass filter per channel
    • Backplane Bus: Proprietary ISBus serial communication for Mark VI rack
    • Hot Swap Support: Yes, online replacement without rack shutdown
    • Diagnostic Indicators: 3 front panel LEDs (RUN, FAULT, COMM)
    • Rack Supply: 24VDC / 5VDC from VME backplane
    • Typical Power Consumption: 5.7W
    • Operating Temperature: -20℃ ~ +60℃ ventilated turbine control cabinet
    • Humidity Range: 5% ~ 95% RH non-condensing
    • Mechanical Size: 8.5in length × 8.1in width single-width IS200 VME card
    • Terminals: Dual-side screw terminal blocks, 36 terminals per side
    • Certifications: CE, UL industrial power generation safety certification
    3. On-board Hardware Layout
    1. Front panel: RUN/FAULT/COMM status LED indicators, fixing screws
    2. Dual-side green screw terminal blocks for all field DI wiring
    3. 24-channel opto-isolated DI signal conditioning & surge suppression circuit
    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
    • IS200SDIIH1ADB (SDII): Simplex discrete input termination board (DI signal interface only)
    • IS200DSPXH1DBD (DSPX): Mark VI main real-time control CPU, executes auxiliary sequence logic
    • DS200SDCCG5AHD (SDCC): EX2100 excitation main control board, exchange excitation cabinet DI signals via ISBus
    • Field devices: Valve limit switches, breaker auxiliary contacts, pressure/temperature switches, local control pushbuttons
    • Full signal chain: Field wet contact signal → IS200SDIIH1ADB isolation & conversion → ISBus backplane → DSPX logic calculation → HMI alarm display & auxiliary interlock
    • Platform Separation: Cannot be inserted into Mark V, Honeywell System57, Emerson Ovation racks; simplex design not applicable for TMR safety trip circuits
    5. Typical Industrial Application Scenarios
    • Combined-cycle gas turbine Mark VI rack: Lube oil system, fuel gas auxiliary valve, cooling fan non-trip status contact collection
    • Coal-fired steam turbine EX2100 excitation cabinet: Exciter fan, cooling water valve auxiliary switch signal acquisition
    • Industrial cogeneration gas turbine unit: Auxiliary pump, drain valve, local cabinet door status discrete signal monitoring
    • Waste heat recovery unit: Non-critical process limit switch, pressure alarm contact simplex collection
    GE Gas Power © IS200SDIIH1ADB MRP683026 SDII Simplex Discrete Input Terminal Board Mark VI / EX2100 Control System


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