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The GE IS230TREAH1A is a triple-modular redundant (TMR) Emergency Trip Module Assembly for the GE Mark VIe control system. This is a complete, pre-configured module designed for safety-critical emergency shutdown applications. The assembly includes a TREAH1A terminal board and three PPROH1A electronic I/O packs, operating on 24 VDC.
Key Features
- Triple-Modular Redundant (TMR): This is the most critical feature. The TMR configuration uses three identical I/O packs operating in parallel. A voting algorithm compares the signals from all three packs, ensuring that the control system receives the correct information and can take action even if one or two modules fail. This redundancy is crucial for preventing a catastrophic event due to a single component failure in a safety-critical application.
- Emergency Trip Module: This module is a core component of a turbine’s safety system. It’s configured to process high-priority signals that, upon reaching a setpoint, demand an immediate and safe shutdown, or “trip,” to prevent a dangerous condition.
- 24 VDC Power: The module operates on a 24 VDC power supply, which is a standard voltage for industrial control systems.
- Mark VIe Integration: As part of the IS230 series, this assembly is a key component of the Mark VIe control platform, which is widely used for controlling gas and steam turbines in power generation and other heavy industries.
Applications
The IS230TREAH1A is used in mission-critical industrial settings where a reliable emergency shutdown system is non-negotiable.
- Power Generation: It is a core component in the primary protection logic of gas and steam turbines. It monitors critical parameters and provides the trip logic to ensure a controlled shutdown in the event of an emergency.
- Safety Instrumented Systems (SIS): The module’s TMR design makes it integral to safety-instrumented systems, where the goal is to bring a process to a safe state when dangerous conditions are met.
