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GE IS200TRPGH1BDE｜Primary Trip Terminal Board｜
Functional Overview
This terminal board forms the final execution layer of the Mark VI protection system, integrating trip solenoid valve (ETD) voting drive and Geiger-Mueller flame detector excitation and signal acquisition. It ensures reliable emergency shutdown through hardware-based voting logic, continuous diagnostics, and seamless integration with the Mark VI protection processors.
Core Functions
3-channel trip solenoid valve (ETD) drive
3 voting relays per channel
9 magnetic holding relays total
8-channel Geiger-Mueller flame detector interface
335 V DC excitation (0.5 mA)
Flame signal acquisition and monitoring
Comprehensive fault diagnostics
Relay coil feedback
Solenoid valve power bus monitoring
Flame detector excitation voltage abnormality detection
Redundancy & Safety Logic
Fully adapted to TMR (Triple Redundancy) systems
Each trip solenoid valve circuit includes three independent voting relays
Supports safety voting logic:
1oo2D
2oo3
Meets high-integrity emergency trip requirements for turbine protection
Relay Configuration
Relay type: Magnetic holding relays
Quantity:
9 relays (3 sets × 3 relays)
Functions:
Trip solenoid valve voting drive
Relay coil current monitoring
Fault and status feedback
Power & Drive Characteristics
Trip solenoid valve supply:
125 V DC
L/R time constant: 0.1 s (fast response)
Flame detector supply:
335 V DC (external excitation)
Board logic power:
From Mark VI system rack
+5 V / +15 V / –15 V DC
Typical power consumption: approximately 15 W
Interface & Wiring
Terminal blocks:
2 × 24-point terminal blocks
48 terminals total
Communication interfaces:
D-type connectors for communication with VTUR / PTUR modules in the VME rack
Supports:
Trip solenoid valve status feedback
Flame detector signal transmission
Diagnostic Capabilities
Relay coil drive and contact feedback monitoring
Trip solenoid valve power bus abnormality detection
Flame detector excitation voltage:
Over-voltage alarm
Under-voltage alarm
Enhances system availability and maintenance efficiency
Environmental Specifications
Operating temperature: 0 °C to +60 °C
Storage temperature: –40 °C to +85 °C
Mechanical Characteristics
Form factor: Mark VI standard I/O terminal board
Dimensions (approx.): 178 × 330 × 25 mm
Weight (approx.): 1.5 kg
Installation & Protection
Installation method:
Mark VI standard I/O rack slot installation
Supports hot swapping
Protection rating: IP20
Suitable for installation inside control cabinets
Compatibility & System Integration
Compatible with Mark VI VTUR / PTUR modules
Must be used in conjunction with the TREG emergency trip board
Forms the hardware execution interface for Mark VI emergency trip and flame protection systems
Typical Applications
Turbine emergency trip systems
Overspeed and flame-out protection
TMR safety shutdown architectures
Final actuator and flame detection interface in gas turbine control systems
GE IS200TRPGH1BDE｜Primary Trip Terminal Board｜
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By structuring the information in this manner, the article provides a clear and organized understanding of input channels, transducer supply, and communication implementations in distributed control systems.
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