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The GE IS230TCISH6C is a triple-modular redundant (TMR) contact input assembly for the GE Mark VIe control system. This module is an assembly of the TBCIS2C terminal board and the YDIAS1A I/O pack, specifically rated to handle 125 VDC signals. It is designed for high-reliability applications where uninterrupted digital signal monitoring is critical.
Key Features
- TMR (Triple-Modular Redundant): This is the most important feature. The TMR configuration uses three identical modules operating in parallel. A voting algorithm compares their inputs, ensuring the system can provide accurate data even if one or two modules fail. This redundancy is a core part of the Mark VIe’s high-reliability architecture.
- 125 VDC Operation: The module is specifically rated to handle digital input signals at 125 VDC, a common control voltage in industrial settings like power plants.
- Contact Input: The module’s primary function is to handle binary or on/off signals from field devices such as switches, relays, and push-buttons, converting their physical states into digital data for the controller.
- Assembly: The part number indicates that it’s a pre-assembled unit, including both the terminal board and the I/O pack, making it a ready-to-install component.
Applications
The IS230TCISH6C is used in industrial settings where the loss of a digital input 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 is essential for ensuring that the control system 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 a digital signal could result in significant equipment damage or a safety risk.
