IS200VAICH1C GE Analog I/O Board | Mark VI VAIC Processor Board

IS200VAICH1C – General Electric Mark VI Analog I/O VAIC Board

Key Technical Specifications

• Brand: General Electric | Model: IS200VAICH1C
• Series: Mark VI Speedtronic | Product Type: Analog I/O VAIC Processor Board
• Number of Channels: 24 total (20 analog inputs, 4 analog outputs)
• Input Types: Voltage or 4-20 mA depending on terminal board configuration
• Output Types: Two 4-20 mA outputs, two configurable for 4-20 mA or 0-200 mA
• Redundancy Support: Simplex and triple modular redundancy (TMR) configurations
• PCB Coating: Conformal coating for environmental protection
• Functional Revision: C-rated revision
• Country of Origin: United States
• Instruction Manual: GEH-6421

Analog Input & Output Capabilities

• The IS200VAICH1C accepts 20 analog inputs and controls 4 analog outputs for comprehensive I/O management.
• Signal conditioning circuitry includes analog multiplexers, A/D converters, and D/A converters.
• Each terminal board accepts 10 inputs and 2 outputs, connecting via cables to the VME rack.
• Noise suppression circuitry protects inputs and outputs against surges and high-frequency interference.
• Hardware filters on the terminal board work alongside configurable software filters on the VAIC board.

System Integration & Redundancy Features

• In TMR configuration, input signals fan out to three VME racks (R, S, T) each containing a IS200VAICH1C.
• Output signals use a proprietary circuit where all three VAICs contribute to create the desired current.
• When one VAIC fails, the system removes the faulty board and the remaining two continue producing correct current.
• In simplex configuration, a single VAIC provides all output currents for the system.
• 24 V dc power to transducers comes from all three VME racks with diode OR selection on the terminal board.

Compressor Stall Detection

• VAIC firmware includes gas turbine compressor stall detection running at 200 Hz sampling rate.
• Two stall algorithms are available: one for small LM gas turbines using two pressure transducers.
• The second algorithm serves heavy-duty gas turbines using three pressure transducers.
• The algorithm monitors compressor discharge pressure (PS3) and its rate of change (dPS3dt).
• When stall conditions are detected, the IS200VAICH1C sends a shutdown signal to the controller.
• The shutdown signal can activate fuel shut-off valves through any relay output.

Diagnostic Capabilities & Status Indication

• Three front panel LEDs provide clear status information for the IS200VAICH1C.
• Flashing green indicates normal RUN condition, solid red indicates FAIL condition.
• Steady orange STATUS LED signals a diagnostic alarm condition on the board.
• Each analog input features hardware limit checking with preset high and low levels.
• Configurable high and low system limits generate alarms with latching or non-latching options.
• In TMR systems, the board identifies signals that deviate from the median value by a predetermined limit.
• Diagnostics monitor D/A outputs, output currents, suicide relays, and 20/200 mA scaling relays.

Frequently Asked Questions (FAQ)

• Is the IS200VAICH1C a brand new original product?
  Yes, we supply IS200VAICH1C as a brand new original unit, factory-sealed and ready for installation.
• Do you have this model in stock?
  Yes, we keep IS200VAICH1C in stock for immediate orders. Inventory is regularly updated.
• What is the typical lead time for shipping?
  We process and ship orders within 5 business days after payment confirmation.
• Which carriers do you use for delivery?
  We ship via FedEx, UPS, and DHL to ensure fast and reliable global delivery.
• What is your return policy?
  We support 30-day returns. If you are not satisfied, contact us within 30 days for return instructions.
• What is the difference between IS200VAICH1C and newer revisions?
  The IS200VAICH1C is a C-rated revision. Newer revisions like VAICH1D support higher load resistance for 20 mA outputs.
• Can I use this board in a TMR system?
  Yes, the IS200VAICH1C fully supports triple modular redundancy configurations.
• What terminal boards are compatible with this VAIC board?
  This generation requires TBAIH1B or earlier, or any revision of DTAI terminal boards for proper operation.
• Does this board support compressor stall detection?
  Yes, VAIC firmware includes compressor stall detection algorithms for both small and heavy-duty gas turbines.
• What are the output current options?
  Two outputs provide 4-20 mA, while the other two are configurable for 4-20 mA or 0-200 mA.

Contact Information Inquiries: sales@nex-auto.com , +86 153 9242 9628

Partner NexAuto Technology Limited: https://www.nex-auto.com/