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Identification Guide
IS200VAICH1CBA Board DetailPart Number
IS200VAICH1CBA Board Type
VAIC VME Analog I/O Board System
GE Mark VI Speedtronic Before ordering, compare the CBA suffix and connector layout with the board removed from your cabinet. A label photo is usually the quickest check. Ask Myrtle to Verify ↓ |
Where the VAIC board sits in a Mark VI cabinet
Inside a Mark VI cabinet, the IS200VAICH1CBA occupies a VME-rack position between the controller and the analog terminal wiring. Field cables do not land on the VAIC card itself; they normally terminate on compatible TBAI boards, with the measured values passed onward for control use.
The VAIC board handles up to 20 analog inputs and four analog outputs when connected to two compatible terminal boards. It converts incoming analog signals into digital values and transfers the resulting data through the VME backplane. For output processing, the board converts digital commands from the controller into analog current signals for the connected customer circuits.
Twenty measurement points can be assigned through a pair of matching terminal boards.
Four command channels return controller decisions to the field side.
The same board family appears in simplex cabinets and in triple-redundant layouts; the surrounding hardware decides the arrangement.
Technical Specifications
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Parameter
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Specification
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Manufacturer
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General Electric / GE Industrial Systems
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Model / Part Number
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IS200VAICH1CBA
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Product Type
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VAIC VME board for field-level analog signals
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Control Platform
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GE Mark VI Speedtronic Turbine Control System
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Analog Inputs
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20 total; typically divided across two terminal boards
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Analog Outputs
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4 total; typically divided across two terminal boards
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Rack / Interface
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VME rack and VME backplane communication
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Supported Architecture
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Simplex or Triple Modular Redundant (TMR)
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Board Coating
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Conformal coating
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Revision Levels
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Primary C / Secondary B / Artwork A
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Reference Manual
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GEH-6421 Mark VI Turbine Control System Guide
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Have a board on the bench but no reliable replacement source?
Send Myrtle one clear label photo together with the quantity and delivery country. We will compare the suffix, look at available stock and reply with a workable shipping option.
Purpose & Functional Role
During each scan, the VAIC reads the analog values arriving from the terminal-board side and makes those values available to the Mark VI controller over the VME backplane. This is the path used by typical pressure, flow, temperature-converter and position-feedback signals.
The output path works in reverse: four controller values are converted into current signals for external circuits. Because input and output duties share the same card, a failed VAIC can affect several unrelated loops at once-useful information when tracing a cabinet fault.
Channel choices are set on the connected terminal hardware, so replacing the VME card does not remove the need to inspect jumper positions and cable routing. In a TMR cabinet, also record which rack and signal branch the old board came from before removal.
Application Fields
Common in turbine packages where pressure, flow and valve-position loops must remain available during an outage restart.
Useful for compressor-train controls and other packages that still depend on Mark VI VME hardware.
Kept as a strategic spare by mills, refineries and process plants with older GE control cabinets.
Questions buyers usually ask about IS200VAICH1CBA
Models that often appear on the same maintenance list
These are not claimed as substitutes for the VAIC. They are simply parts our customers often request while building an outage or obsolescence list. The links lead to products already published on this website.
Notes for requesting this exact board
For an IS200VAICH1CBA enquiry, photograph the white identification label before packing the old board. Include the quantity and delivery country. This small step is more useful than sending a generic Mark VI description.
If the card has already been removed, note its rack and slot while the cabinet record is still available. Where possible, add the connected terminal-board number. We can then discuss the CBA revision without guessing from a shortened model.
✓ Connector and visible-condition review
✓ Quantity, lead-time and packing details
✓ Shipping route to the stated destination
✓ One sales contact from enquiry through dispatch
Send the label first; the quotation follows
Email the full model, quantity and destination to Myrtle. If the suffix is unclear, attach a close-up photograph and we will identify what still needs checking before price confirmation.
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