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The GE IS200SRLYS2A is a Simplex Relay Terminal Board for the GE Mark VI (MKVI) turbine control system. Its primary function is to provide an interface for relay-based digital output signals, allowing the control system to operate external devices like solenoids, contactors, and motor starters in a non-redundant (simplex) configuration.
Function and Purpose ⚙️
The IS200SRLYS2A is a crucial part of the Mark VI’s control loop, serving as the link between the system’s electronic logic and the physical world. The board receives low-voltage signals from the main processor and uses them to energize or de-energize relays. These relays, in turn, control higher-voltage field devices. This design provides several benefits:
- Electrical Isolation: The relays act as a barrier, providing electrical isolation between the sensitive control electronics and the potentially noisy, high-power field circuits. This protects the control system from voltage spikes and ground loops.
- Signal Amplification: The relays amplify the low-power digital signals from the controller to a higher power level capable of driving field devices.
- Simplified Wiring: The design makes installation and maintenance easier by providing a central, organized connection point for field wiring.
Related Components
The IS200SRLYS2A works in conjunction with other components of the Mark VI system:
- Processor Cards: The main CPU of the system sends the digital output commands to the IS200SRLYS2A.
- I/O Packs: Electronic modules that mount on the terminal board and contain the active electronics for signal processing and relay control.
- Field Devices: The board connects to various field devices, such as solenoids, motor contactors, and indicator lights, to carry out control commands.
