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GE IS200VAICH1CBA Analog Input/Output Board

The GE IS200VAICH1CBA, also cataloged as the IS200VAIC Analog Input/Output Board, provides direct analog signal conversion and actuator output processing within GE Mark VI Speedtronic turbine control platforms.

Hardware Specifications

Parameter	Specification
Model	IS200VAICH1CBA
Brand	GE
Origin	United States
Weight	1 kg
Operating Temp	0 deg C to +60 deg C
Product Type	Analog Input/Output (VAIC) Board
System Platform	GE Mark VI Speedtronic Turbine Control System
Analog Inputs	20 channels
Analog Outputs	4 channels
Input Signal Range	4-20 mA, +/-5 V, +/-10 V, 0-1 mA
Output Signal Range	0-20 mA or 4-20 mA actuator drive outputs
Input Converter Resolution	16-bit A/D converter
Output Converter Resolution	12-bit D/A converter
Backplane Interface	32-bit VMEbus P1/P2 connectors
Communication Interface	10BaseT/100BaseTX Ethernet RJ-45
Scan Time	10 ms
Memory	128 MB flash memory
PCB Protection	Conformal coating
Redundancy Support	Simplex and TMR configurations

GE Mark VI VME Analog Processing Architecture

The IS200VAICH1CBA performs analog input acquisition and analog output generation between field devices and Mark VI turbine control processors. The board accepts current and voltage feedback signals from sensors and transmits converted digital values through the VME backplane communication structure.

The module supports I/O density scaling within Mark VI rack architectures by combining multiple analog input channels and actuator output channels on a single VME board. The TMR configuration distributes field signal processing across redundant boards, allowing system diagnostics to isolate a failed channel assembly.

The IS200VAICH1CBA supports firmware flash compatibility within the Mark VI platform and communicates through the VMEbus interface for deterministic controller data exchange. The board integrates with compatible terminal boards including TBAIH1B/C and DTAI assemblies.

Frequently Asked Questions

Q: What analog conversion functions are provided by the IS200VAICH1CBA?

A: The board provides 16-bit analog-to-digital conversion for input channels and 12-bit digital-to-analog conversion for output channels connected to actuator control circuits.

Q: Does the IS200VAICH1CBA support redundant control configurations?

A: Yes. The module supports simplex and triple modular redundant (TMR) configurations within compatible GE Mark VI control racks.

Q: What type of backplane communication does this board use?

A: The IS200VAICH1CBA uses the GE Mark VI VME rack architecture through P1/P2 VMEbus connectors for controller communication.

Field Installation Guidelines

Install the IS200VAICH1CBA into the designated double-slot VME rack position according to the Mark VI hardware configuration. Verify rack power removal before board insertion or removal to prevent connector damage and unintended electrical conditions.

Connect analog field wiring through the specified terminal boards and maintain cable separation between low-level analog signals and high-current switching conductors. Use shielded instrumentation cable where required, with cable shields terminated according to cabinet grounding practices.

Before commissioning, verify channel assignments, terminal board compatibility, redundancy configuration, and controller recognition through Mark VI diagnostic tools. Check LED status indicators and communication feedback after installation.

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