GE IS200VAICH1D | VME Analog Input Board (Mark VI System)

The GE IS200VAICH1D (including version IS200VAICH1DAB) is a high-performance Analog Input board designed for the GE Mark VI Speedtronic turbine control system. This board serves as the primary interface for collecting analog signals from various field sensors, such as pressure transducers, LVDTs (Linear Variable Differential Transformers), and flow meters. It converts these continuous electrical signals into digital data that the Mark VI controller can process for real-time turbine regulation and protection.

GE IS200 VAIC H1D By IS200VAICH1DAB VME Analog Input Card Mark VI IS200

Product Specifications and Datasheet

  • Model Number: IS200VAICH1D / IS200VAICH1DAB

  • Series: Mark VI Speedtronic Control

  • Board Type: VME Analog Input (VAIC)

  • Input Channels: 20 Analog Input Channels

  • Signal Compatibility: Supports 4-20 mA current loops, ±10 V DC, and specialized transducer inputs

  • A/D Conversion: High-resolution Analog-to-Digital conversion for precision monitoring

  • Interface: VMEbus compliant (Standard 6U height)

  • Terminal Board Compatibility: Typically works with TBAI, TBAH, or STAI terminal boards

  • Weight: 0.85 kg

  • Country of Origin: USA

Application Areas

The VAIC board is essential for the operation of heavy-duty gas and steam turbines:

  • Pressure Monitoring: Collecting data from fuel gas, lube oil, and hydraulic pressure sensors.

  • Position Sensing: Interfacing with LVDTs for valve position feedback in fuel and steam systems.

  • Temperature Integration: Receiving signals from various temperature transmitters across the turbine skid.

  • Flow Measurement: Monitoring air and fuel flow rates to ensure optimal combustion and efficiency.

Product Instructions for Use

  1. Handling: This board contains sensitive integrated circuits. Always use an ESD-safe workstation and wear a grounded wrist strap when handling the IS200VAICH1D.

  2. Installation: Power down the VME rack before insertion. Slide the board into its assigned slot (typically in the Control Module rack) and ensure the top and bottom ejector handles are fully locked.

  3. Wiring: The field wiring does not connect directly to the VAIC board. It connects to a terminal board (like the TBAI) situated at the rear or side of the cabinet, which is then linked to the VAIC via a high-density ribbon cable.

  4. Configuration: Use the GE Control System Toolbox to configure the input types (e.g., 4-20mA or voltage) and to calibrate the channels. Verify that the software revision matches the hardware version for seamless data acquisition.

Q&A: Frequently Asked Questions

Q1: What does the “H1D” suffix represent? A1: The “H1D” indicates the hardware revision level. In the Mark VI system, revisions often include component updates or improved noise filtering while maintaining backward compatibility with the “VAIC” functional group.

Q2: How many VAIC boards can be used in a single system? A2: A standard Mark VI system can support multiple VAIC boards depending on the total number of analog inputs required by the turbine configuration and the number of available VME slots.

Q3: Can the board detect a “wire break” in a 4-20mA loop? A3: Yes, the VAIC board includes diagnostic circuitry that can detect open-circuit (under-range) and short-circuit (over-range) conditions, triggering a system alarm in the Toolbox software.

Recommended Similar Models

  • IS200VAICH1B: An earlier revision of the Analog Input board used in many legacy Mark VI installations.

  • IS200VPROH1B: The Turbine Protection board which often works alongside the VAIC for emergency trip logic.

  • IS200TBAIH1C: The Analog Input Terminal Board that serves as the physical landing point for field wires.

  • IS200VCMI H2B: The Communication Interface board that manages data flow between the VAIC and the controller.

  • IS200VTURH1B: A specialized Turbine Primary I/O board used for speed sensing and pulse inputs.

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