Product Short Description
The IS200VAICH1D is a VME-based analog input card within the GE Mark VI / Mark VIe Speedtronic turbine-control family. It is typically paired with one, two or three TBAI terminal boards to create a 20-channel analog-input subsystem that can be used in either simplex or Triple-Modular-Redundant (TMR) configurations .
Description
Technical Specifications
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Board type: VME analog input / VAIC (Voltage/Analog Input Control) card
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Scan rate: 200 Hz
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Input span: 4–20 mA, ±1 mA, ±5 V DC, ±10 V DC
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Resolution: 16-bit A/D converter with 14-bit effective resolution
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Output capability: four 4–20 mA analog outputs (two on each TBAI)
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Power draw: < 31 mW (board only)
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Form factor: 6U single-width VME card with 37-pin front connector
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Operating temperature: –40 °C to +70 °C
Functional Highlights
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Real-time 200 Hz sampling for all 20 inputs with digital filtering and 32-bit floating-point processing
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On-board sensor-characteristic library for RTD and thermocouple linearization
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Dual back-plane connectors allow direct VME64 data transfer to the VCMI communication board
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Three front-panel LEDs report run, fail and status conditions
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Hot-swappable for on-line maintenance in TMR racks (R, S, T configurations)
Applications
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Gas and steam turbine control systems: compressor stall detection within 30 ms, exhaust-temperature monitoring, flow/pressure sensing
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Power-generation plants: Mark VI / Mark VIe DCS analog acquisition for boilers, HRSGs and auxiliary systems
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Industrial drives: high-speed analog feedback for speed and torque control loops
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