GE IS200ERIOH1A Exciter Regulator I/O Board for Mark VI

June 12, 2026 • 3 min read • wayne • Guide

Product Summary

The IS200ERIOH1A is a critical Exciter Regulator I/O board from General Electric. It manages customer and system I/O for EX2100 and Mark VI systems. This board works in both simplex and redundant configurations. It uses an FPGA for data acquisition into DPM control. This specific unit is a revised version of the original part.

Theme A: Product Procurement & Buyer Guide

Understanding the IS200ERIOH1A for Your System

Procurement managers must verify the system configuration first. The IS200ERIOH1A board supports simplex and redundant setups. For simplex applications, you mount one board in the ERBP. Redundant systems require three boards for complete operation. These attach to the ERRB M2 and C slots. The board also mounts to the ERBP M1 in this mode. The M1/M2/C controllers all reside on a single PCB. This design simplifies your ordering process for spares.

Key Technical Specifications for Selection

This board provides an I/O interface for customer signals. It connects to the ECTBG2 and EPCT terminal boards. It also interfaces system I/O for the EROC and ERDD boards. For redundant setups, it connects to the ERRR relay board. The board uses two twenty-five pin connectors for these links. It communicates through the ERBP or ERRB backplanes. This ensures reliable signal transfer across your entire system.

Hardware Components on the Board

The front faceplate of this board is double wide. It features one toggle switch for manual control. Two backplane connectors, P1 and P2, sit on the back edge. The board includes two CPU sockets for processing power. A field-programmable gate array handles all data collection. The FPGA stores this data into Dual Port Memory. Hundreds of capacitors and resistors populate the surface. Several integrated circuits complete the board's design.

Application in EX2100 Regulator Control

This board offers system and customer I/O for regulator control. In simplex systems, it mounts directly in the ERBP. It interfaces customer I/O signals from the ECTBG2 board. It also handles signals from the EPCT terminal board. For system I/O, it works with the EROC options card. It also interfaces with the ERDD dynamic discharge board. This provides comprehensive control for your excitation system.

Revision A and Its Importance

The "A" at the end of the model number indicates a revision. This means the board has undergone engineering improvements. It ensures better performance and reliability over older versions. Always check your system for revision compatibility before ordering.