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GE IS200TRPGH1BDD

The GE IS200TRPGH1BDD is a primary trip and flame detector terminal board within the Mark VI Speedtronic Turbine Control System. It executes critical emergency shutdown commands by driving trip solenoids and continuously monitoring flame detector circuits.
  • Product Type: Primary Trip / Flame Detector Terminal Board (TRPG)
  • Manufacturer: GE Fanuc / GE Vernova
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Detailed content

  • Control System: Mark VI / Mark VIe Speedtronic
  • Actuation Output: –125 VDC nominal for trip solenoids
  • Flame Monitoring: Up to 8 flame detector circuits per board
  • Relay Technology: Integrated solid-state relay drivers
  • Mounting Architecture: VME rack-mounted
  • Diagnostics: On-board fault detection and status feedback
  • Trip Solenoids: 3 channels at –125 VDC
  • Voting Relays: 9 magnetic relays (3 per solenoid, TMR 2/3 voting logic)
  • Flame Detector Inputs: 8× Geiger-Mueller, 335 VDC supply
  • Control Power: 24 VDC ±10%, 28 VDC coil drive
  • Response Time: ≤10 ms (trip command)
  • Isolation: ≥2500 VAC channel-to-channel
  • Safety Integrity: SIL3 capable (TMR triple modular redundancy)
  • Power Consumption: ≤15 W full load
  • Operating Temperature: –40°C to +70°C
  • Net Weight: 0.27 kg (0.6 lb)
  • Dimensions: 21.6 cm × 22.4 cm × 25.2 cm
  • Engineering Advantages:
    • High-current solenoid actuation: Stable –125 VDC overcomes mechanical resistance of heavy-duty trip solenoids for instantaneous valve closure during emergencies
    • Consolidated flame surveillance: 8 independent flame detector inputs enable 2-out-of-3 voting logic, preventing nuisance trips while maintaining safety
    • Deterministic fault isolation: Robust electrical isolation protects the VME backplane and processor from field-side voltage spikes
    • Solid-state reliability: Eliminates contact wear, significantly extending MTBF in high-vibration turbine environments
  • Working Principle: The board receives trip commands from the Mark VI controller, drives –125 VDC to trip solenoids through force-guided voting relays, and simultaneously monitors 8 flame detector circuits. If a solenoid circuit shorts, the board identifies the fault locally, preventing damage propagation to the wider control network.
  • Installation Requirements: Mount in VME rack; verify –125 VDC output matches solenoid ratings in Speedtronic Toolbox software; the H1BDD revision is backward-compatible with most Mark VI TRPG applications but I/O configuration must be verified.
  • Usage Notes: Handle with ESD protection; confirm TMR voting configuration in software; the BDD variant offers enhanced coating and component screening for extreme environments.

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