GE IS200EMIOH1A Exciter Main I/O Board

GE IS200EMIOH1A Exciter Main I/O Board

The General Electric IS200EMIOH1A is an Exciter Main I/O Board for EX2100 excitation control systems. This EMIO module serves as the central I/O controller for multiple terminal boards in the control rack. It handles PT/CT signals, contact inputs, and relay drivers while managing gate pulse distribution.

Technical Specifications

• Manufacturer: General Electric (GE)
• Model Number: IS200EMIOH1A
• Series: EX2100 Excitation Control
• Product Type: Exciter Main I/O Board
• Form Factor: Single-slot, double-height VME
• Weight: 2 pounds (0.91 kg)
• Dimensions: 9.25" L x 6.5" W (235mm x 165mm)
• Manual Reference: GEI-100453
• Country of Origin: USA
• Weight:1.32Kg

I/O Management

• Controls I/O for EPCT, ECTB, EACF, and EXTB terminal boards
• Processes PT (Potential Transformer) and CT (Current Transformer) signals
• Manages contact inputs and output relay drivers
• Handles pilot trip relay drive signals
• Controls de-excitation initiation through EXTB connection

Signal Processing

• Generates logic level gate pulse signals to ESEL board
• Backplane communication via P1 connector
• I/O signal interface via P2 connector
• FPGA-based status monitoring (IMOK output)
• 5V DC power supply operation

Physical Design

• VME style board with single-slot configuration
• Double-height form factor for expanded functionality
• Two front panel LEDs (Power and Status indicators)
• No jumpers, fuses, or cable connectors on board
• All cabling through control backplane (EBKP)

Installation & Replacement

• Mounts in control rack with captive faceplate screws
• Ejector tabs for safe board removal
• Even screw tightening for proper seating
• Requires exciter deactivation before service
• Electrical safety verification mandatory

System Integration

• Central I/O management for control rack
• Gate pulse distribution to ESEL and EGPA boards
• EDEX board control through EXTB interface
• Backplane communication with other control boards
• Comprehensive terminal board coordination

Documentation Reference

• Primary manual: GEI-100453 (EMIO Board Specific)
• Secondary reference: GEH-6632 (EX2100 User's Guide)
• Page 48 of GEH-6632 contains EMIO board information
• Installation and replacement procedures documented
• Safety guidelines and operational parameters included

Frequently Asked Questions (FAQ)

• What terminal boards does it control? EPCT, ECTB, EACF, and EXTB terminal boards.
• What type of signals does it process? PT/CT signals, contact inputs, and relay drivers.
• What is the board form factor? Single-slot, double-height VME style board.
• How many LED indicators are there? Two LEDs (Power and Status) on front plate.
• What manual should be used for reference? GEI-100453 or GEH-6632 page 48.
• What safety precautions are required? Exciter deactivation and electrical verification.

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