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GE IS200VAICH1B
Product Name: Mark VI IS200 Analog I/O Board
Product Introduction: The IS200VAICH1B (with the extended variant IS200VAICH1BED) is an Analog I/O Board for General Electric’s Mark VI turbine control system. It handles mixed analog signal input and output, providing 12 single-ended analog input channels and 6 isolated analog output channels for actuator control within the Mark VI rack.
Detailed content
Technical Specifications:
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Manufacturer: General Electric
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Series: Mark VI IS200
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Model Numbers: IS200VAICH1B, IS200VAICH1BED
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Dimensions: 17.0 cm (L) × 12.5 cm (W) × 2.1 cm (H)
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Weight: 0.54 kg
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PCB: 6-layer to minimize crosstalk
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Analog Inputs: 12 single-ended channels, software-selectable 0–10 V or 4–20 mA
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Analog Outputs: 6 isolated channels
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ADC/DAC Resolution: 16-bit
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Accuracy: ±0.1% across full signal range
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Processor: 150 MHz dedicated processor for scaling and linearization
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Power: 6.0 W at nominal 24 V DC; inrush current ≤ 2.7 A
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Energy Storage: 3.3 V supercapacitor providing 36-hour backup for calibration and range settings
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Operating Temperature: -30°C to +65°C
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Storage Temperature: -40°C to +85°C
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MTBF: > 140,000 hours continuous operation
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Component Count: 187 (12 ADC front-ends, 6 DAC converters, 108 precision resistors)
Functional Features:
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Mixed-signal processing for turbine control
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Software-selectable input ranges per channel
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Isolated analog outputs for actuator drive
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Supercapacitor-backed configuration retention during power loss
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High-resolution 16-bit conversion with ±0.1% accuracy
Material Composition & Structure:
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6-layer PCB
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Two 40-pin ribbon cable headers connecting to external termination boards
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One 10-pin configuration port for channel range adjustments
Working Principle: Analog input signals from the field are received via the termination boards connected to the 40-pin headers. The 12 ADC front-ends digitize the conditioned signals at 16-bit resolution. The 150 MHz processor scales, linearizes, and processes the data before passing it to the Mark VI controller over the backplane. For outputs, the processor writes digital values to the 6 DAC converters, which drive the isolated analog output channels. The 3.3 V supercapacitor maintains the calibration SRAM during power interruptions.
Installation Requirements:
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Install in a standard Mark VI IS200 rack slot
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Connect the two 40-pin ribbon headers to the corresponding termination boards
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Connect the 10-pin configuration port for initial channel range setup
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Supply 24 V DC nominal power (observe polarity; inrush ≤ 2.7 A)
Usage Precautions:
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Maintain operating temperature within -30°C to +65°C
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Do not exceed 2.7 A inrush current on the 24 V DC supply
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The supercapacitor provides 36-hour backup — prolonged power loss beyond this will erase calibration
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Observe ESD precautions when handling the 6-layer PCB
