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The GE IS200QTBAH1A is a Terminal Board for the GE Mark V (MMV) and Mark VI (MKVI) turbine control systems. It’s a key I/O (Input/Output) component designed to interface with the main processor by providing a centralized connection point for various field devices. The letters “R/S/T” in its designation indicate it is part of the “Redundant/Simplex/TMR” (Triple Modular Redundancy) I/O family, and it is a removable terminal board, which simplifies maintenance.
Function and Purpose ⚙️
The primary function of the IS200QTBAH1A is to serve as a robust physical termination point for the wiring coming from sensors and actuators in the field. Instead of connecting these wires directly to a sensitive electronic circuit board, they are connected to screw terminals on this board. This design offers several key advantages:
- Ease of Maintenance: The “removable” feature means the entire terminal board, along with the connected wiring, can be uninstalled from the control cabinet quickly. This allows for easier troubleshooting or replacement without having to disconnect and reconnect each wire individually.
- Signal Integrity: It provides a clean, protected interface, often with signal conditioning circuitry, to prevent electrical noise and surges from the field from affecting the main processor.
- Organization: It helps to organize the complex wiring in a turbine control cabinet, making it easier for technicians to trace signals and perform maintenance.
Related Components
The IS200QTBAH1A is part of a larger control system and works in conjunction with several other key components:
- Processor Modules: These are the core controllers that read data from and send commands to the terminal boards.
- I/O Packs: Electronic modules that mount directly on the terminal board and contain the signal conditioning and processing circuitry.
- Field Devices: The board connects to a variety of field devices, such as speed sensors, solenoids, and limit switches.
