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The GE IS200SHRAH2A is a HART Analog Input Terminal Board for the GE Mark VI (MKVI) and Mark VIe (MKVIe) turbine control systems. Its primary function is to provide a physical connection point for analog sensors that use the HART (Highway Addressable Remote Transducer) communication protocol.
Function and Purpose ⚙️
The IS200SHRAH2A serves as the interface between the control system and HART-compatible field devices, such as smart pressure, temperature, and flow transmitters. While it handles the traditional analog signal (the 4-20mA current loop), its key feature is the ability to transmit and receive digital information superimposed on that same wiring. This allows for:
- Remote configuration: Adjusting a sensor’s range, units, or calibration from the control room.
- Device diagnostics: Monitoring the health and status of the device itself (e.g., sensor failures, loop integrity).
- Access to additional data: Reading secondary variables from multi-variable instruments.
The “10/2” in the description likely refers to the channel configuration, indicating 10 analog inputs and 2 analog outputs. This functionality greatly simplifies maintenance, troubleshooting, and commissioning, reducing the need for technicians to be physically in the field.
Related Components
The IS200SHRAH2A works with other components of the Mark VI and VIe systems:
- HART-Enabled I/O Packs: These electronic modules, such as the IS200SAIHH1A, mount directly on the terminal board and contain the active electronics for signal processing and HART communication.
- Processor Cards: The main CPU of the system, which reads the digitized data from the board.
- Field Devices: The board connects to various smart instruments that support the HART protocol.
