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The GE IS230TNSVH4A is a triple-modular redundant (TMR) servo control module assembly for the GE Mark VIe control system. The part number indicates that it is an assembly that includes the TSVCH2A terminal board and three PSVOH1B I/O packs. This unit is designed for precise, high-reliability control of servo valves.
Key Features
- Servo Control: This assembly is specifically designed to control servo valves, which are used for the precise, continuous positioning of actuators. Unlike a simple on/off valve, a servo valve can be commanded to be at any position between 0% and 100%, allowing for fine-tuned control of a process.
- TMR (Triple-Modular Redundant): This is the most critical feature. The TMR configuration uses three identical I/O packs operating in parallel. A voting algorithm continuously compares the output signals from all three packs, ensuring that the correct command is sent to the servo valve. This redundancy allows the system to continue operating and maintain precise control even if one or two I/O packs fail.
- Assembly: The part number signifies a complete, ready-to-install unit, consisting of both a terminal board (TSVCH2A) where the wiring is connected and the electronic I/O packs (PSVOH1B) that process the signals.
- Mark VIe Integration: As part of the IS230 series, this assembly is designed to seamlessly integrate with the Mark VIe control platform, a system widely used for controlling turbines in power generation plants.
Applications
The IS230TNSVH4A is used in critical industrial settings where precise control and high reliability are essential.
- Power Generation: It is used in power plants to control the position of critical valves to regulate fuel flow and turbine speed. The TMR configuration ensures that a failure in one of the control channels won’t lead to a loss of control or a turbine trip.
- Oil and Gas: In refineries and offshore platforms, it controls the position of critical valves to regulate flow, pressure, and temperature. The TMR design is a crucial safety feature in these environments.
- Critical Control: The module’s robust design and redundancy make it suitable for any application where precise control of a continuous process variable is required and where a single point of failure could lead to significant equipment damage or safety risks.
