I/O modules

The GE IS200TRLYH1F IS200TRLYH1FAA Termination Relay Board manages critical output functions for the Mark VI series. It handles emergency shutdown logic for gas and steam turbines. This board supports Triple Modular Redundant (TMR) applications exclusively. You will find it switches high-current loads for solenoids and contactors.

Core Technical Specifications

The GE IS200TRLYH1F IS200TRLYH1FAA Termination Relay Board contains 36 sealed electromechanical relays on one assembly. Each TMR segment receives 12 dedicated relays for full redundancy. These relays operate using a 2oo3 hardware voting scheme. Therefore, the system trips safely even with a single component failure. This design achieves SIL3 certification for critical turbine processes.

Connectors and Physical Interfaces

The GE IS200TRLYH1F IS200TRLYH1FAA Termination Relay Board uses specific high-density ports for system integration. You will find three DC-37 pin connectors labeled JR1, JS1, and JT1. These handle R/S/T logic inputs from the VGEN or VCRC controller. Moreover, two DC-64 pin connectors (J1 and J2) support an optional power distribution board like the IS200WPDFH1A. This board has no jumpers or manual hardware settings. Instead, it runs automatic diagnostics for coil voltage verification.

Energy Storage and Safety Features

This termination board intentionally avoids large electrolytic capacitors on signal paths. Consequently, residual energy storage will not delay a turbine shutdown. The GE IS200TRLYH1F IS200TRLYH1FAA Termination Relay Board also supports hot-swapping inside a live cabinet. It operates reliably between 0°C and +60°C ambient temperatures. Do not use this board for simplex applications. You must install it within a complete TMR architecture. This ensures the safety integrity level remains high for overspeed protection.

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