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The GE IS230TCISH3C is a triple-modular redundant (TMR) I/O module assembly for the GE Mark VIe control system. The part number indicates that it is a complete, pre-configured assembly designed for high-reliability contact input applications, specifically for a 125 VDC power supply. It includes the TBCIS1C terminal board and a YDIAS1A I/O pack.
Key Features
- Triple-Modular Redundant (TMR): This is the most critical feature. The TMR configuration uses three identical I/O packs operating in parallel. The system uses a voting algorithm to compare the inputs from all three packs, ensuring that the control system receives the correct information even if one or two of the input modules fail. This redundancy is a core component of the Mark VIe’s high-reliability architecture.
- Contact Input: The assembly handles binary (on/off) signals from field devices like switches and push-buttons.
- 125 VDC Power: The “125VDC” designation in the description indicates the specific voltage rating for the module, making it suitable for systems that use this common industrial control voltage.
- Assembly: The part number signifies a complete, ready-to-install unit, consisting of both the terminal board (TBCIS1C) where the field wiring is connected and the electronic I/O pack (YDIAS1A) that processes the signals.
- Mark VIe Integration: As part of the IS230 series, this assembly is designed to seamlessly integrate with the Mark VIe control platform, which is widely used for controlling turbines in power generation and other heavy industries.
Applications
The IS230TCISH3C is used in industrial settings where the loss of a digital input signal could lead to a catastrophic event or significant downtime.
- Power Generation: It is used in power plants to monitor the status of critical devices on gas and steam turbines, such as valve limit switches and emergency trip buttons. The TMR redundancy ensures that even if a module fails, the control system still receives vital safety data.
- Oil and Gas: In refineries and offshore platforms, it helps monitor critical discrete signals where continuous operation is essential, such as the open/closed status of emergency shutdown valves or the state of fire and gas detectors.
- Critical Safety Systems: The module is a fundamental component in any safety system where a failure to monitor or control a digital signal could result in significant equipment damage or a safety risk.
