GE DS200SDCCG5AHD SDCC Static Drive Control Card Mark V EX2000 Excitation System

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    • Product Code: DS200SDCCG5AHD
    • Availability: In Stock
    GE DS200SDCCG5AHD SDCC Static Drive Control Card Mark V / EX2000 Excitation System
    Manufacturer: GE General Electric Gas Turbine Controls
    Model: DS200SDCCG5AHD Static Drive Control Card (SDCC)
    Compatible Platform: Mark V Speedtronic Turbine Rack, EX2000 Digital Excitation System
    Type: Rack slot plug-in main excitation processor board, triple 16-bit multi-processor architecture
    Core Function: Generator AVR voltage regulation, full excitation closed-loop control, SCR drive signal output, multi-channel I/O acquisition, ISBus backplane communication, full fault self-diagnosis
    1. Product Overview
    DS200SDCCG5AHD (SDCC) is the core main control board of GE EX2000 digital excitation system, matched with Mark V gas turbine control rack. It adopts three independent 16-bit microprocessors with dual-port RAM interconnection to complete all real-time excitation control algorithms. The board integrates analog/digital signal conditioning circuit, SCR trigger output drive, multi-layer memory storage and system backplane communication interface. It realizes automatic voltage regulation, reactive power control, excitation limit protection and soft excitation start-stop functions for synchronous generators. Built-in comprehensive self-diagnosis logic monitors excitation circuit, power unit and board hardware faults, and uploads timestamped fault records to Mark V main DSPX board and plant DCS system via ISBus. EEPROM supports on-site modification of unit parameters without firmware rewrite. Conformal coated PCB adapts to high-temperature, high-vibration power plant control cabinets. GE stopped original new production, only refurbished and surplus spare parts available aftermarket.
    2. Full Technical Specifications
    • Processor Architecture: 3×16-bit microprocessors + TMS320 DSP math co-processor, dual-port RAM data sharing
    • Memory: 4×EPROM (factory firmware), 1×EEPROM (field configurable parameters)
    • Analog Input: 16 channels, -10V ~ +10V / 4–20mA, isolated 2000VAC
    • Analog Output: 8 channels, SCR thyristor trigger drive signals
    • Digital Output: 8 isolated relay dry contact alarm/trip outputs
    • Backplane Bus: Proprietary ISBus high-speed serial bus for Mark V rack communication
    • External Communication: Modbus RTU RS485 serial port for DCS connection
    • Rack Supply: 12VDC / 24VDC rack backplane power
    • Typical Power Consumption: ~11W
    • Operating Temperature: -30℃ ~ +65℃ ventilated turbine control cabinet
    • Humidity: 5% ~ 95% RH non-condensing
    • Mechanical Size: 330mm L × 200mm W single-width DS200 slot card
    • Certifications: CE, UL industrial power generation safety certification
    3. On-board Hardware Layout
    1. Triple microprocessor core + DSP co-processor & dual-port RAM
    2. EPROM / EEPROM memory chip bank for firmware & parameters
    3. Multi-channel analog signal isolation & EMI filter circuit
    4. SCR trigger analog output drive circuit
    5. Front panel RUN / FAULT status LED indicators & DIP configuration switches
    6. Rear gold-plated DS200 rack backplane connector for ISBus & power supply
    7. Daughterboard expansion slot for communication & waveform recording modules
    4. System Hardware Matching Chain
    • DS200SDCCG5AHD (SDCC): Excitation system main control processing board
    • IS200DSPXH1DBD (DSPX): Mark V turbine main CPU, exchange load & interlock data via ISBus
    • DS200LDCCH1A: Exciter power interface card, drive SCR rectifier bridge
    • Generator CT/PT sensors: Field voltage & current feedback signal source
    • Full signal chain: Generator voltage/current feedback → SDCC analog input → AVR & excitation PID calculation → SCR trigger output → Excitation power unit → Generator rotor winding
    • Platform Separation: Cannot be inserted into Honeywell System57, Emerson Ovation, Mark VI racks, exclusive Mark V / EX2000 hardware
    5. Typical Industrial Application Scenarios
    • Combined-cycle gas turbine power plant Mark V control system: Synchronous generator EX2000 excitation master control
    • Coal-fired steam turbine generator unit: Generator voltage, reactive power closed-loop regulation and excitation fault protection
    • Cogeneration industrial gas turbine unit: Stable power factor control under variable load conditions
    • Hydropower synchronous generator retrofitting: EX2000 digital excitation system upgrade transformation core board
    GE Power Controls © DS200SDCCG5AHD SDCC Static Drive Control Card EX2000 Excitation & Mark V Turbine Control System


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