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The GE IS230TRLSH2F is a triple-modular redundant (TMR), safety integrity level (SIL) rated, relay output assembly for the GE Mark VIe control system. It is a complete, pre-configured unit that provides a highly reliable and fault-tolerant interface for controlling output devices in safety-critical applications.
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 commands from all three packs, ensuring that the control system sends the correct signal even if one or two modules fail. This redundancy is crucial for applications where a single point of failure cannot be tolerated.
- Safety Integrity Level (SIL) Rated: The SIL rating indicates that this module has been designed and certified to meet stringent functional safety standards. This means it can be used in systems where a failure could lead to serious consequences, and the system is required to maintain its intended function or fail in a safe state.
- Relay Output: The module’s primary function is to provide relay output, which allows the control system to switch circuits on or off to control a variety of field devices like solenoids, motor contactors, or alarms. The relays provide electrical isolation between the control system and the device being controlled.
- Assembly: The part number signifies a complete, ready-to-install unit, consisting of both a terminal board and the electronic I/O packs.
- Mark VIe Integration: As part of the IS230 series, this assembly is a key component of the Mark VIe control platform, widely used for controlling turbines in power generation and other heavy industries.
Applications
The IS230TRLSH2F is used in mission-critical industrial settings where a loss of control could lead to a catastrophic event or significant downtime.
- Power Generation: It is a core component in power plants for connecting the wiring from critical relays and contactors to the control system, ensuring that a single-point failure does not compromise the control or safety system.
- Oil and Gas: In refineries and offshore platforms, it provides a stable and redundant connection for the wiring of emergency shutdown valves, fire and gas detectors, and other critical process equipment.
- Safety Instrumented Systems (SIS): The module’s TMR design and SIL rating make it suitable for use in safety-instrumented systems, where the goal is to bring a process to a safe state when dangerous conditions are met.
