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The GE IS200STAOH1A is a Simplex Analog Output Terminal Board for the GE Mark VIe (MKVIe) turbine control system. It’s designed to provide a dedicated, non-redundant interface for analog output signals from the control system to field devices.
Function and Purpose ⚙️
The IS200STAOH1A acts as the crucial link between the MKVIe’s main processor and a turbine’s analog actuators. It receives digital commands from the controller and converts them into continuous, or analog, signals, typically a 4-20mA current loop or a 0-10V voltage signal. This is essential for controlling devices that require precise, variable input, such as:
- Hydraulic servo valves that control steam or fuel flow
- Variable speed drives for pumps or motors
- Positioners for control valves
The “Simplex” designation indicates this board is used in applications where a single, non-redundant channel for analog output is sufficient. The board provides a secure termination point for the wiring, simplifying installation and maintenance.
Related Components 🤝
The IS200STAOH1A works in conjunction with other components of the Mark VIe system, including:
- Processor Cards: The main CPU of the system sends the digital commands to the IS200STAOH1A.
- I/O Packs: These electronic modules, such as the IS200AIOS, mount directly on the terminal board and contain the active electronics for digital-to-analog signal conversion.
- Analog Field Devices: The board connects to a variety of analog actuators, such as control valves and variable speed drives.
