GE IS200ERIOH1AAA Exciter Regulator I/O Board

Technical Specifications

Model: IS200ERIOH1AAA

Brand: GE（GE Vernova）

Product Type: Exciter regulator I/O interface board

Matching System: GE Speedtronic Mark VI turbine control system, EX2100 generator excitation system

Installation Backplane: ERBP excitation regulator backplane

Power Supply: 24VDC rack power supply, working voltage 22.5‑28.5VDC

Backplane Interface: Dual 96‑pin P1/P2 connectors

External Interface: Two 25‑pin D‑sub connectors, reserved TEST diagnostic port

Compatible Boards: EROC, ERDD, EPCT, ECTBG2 terminal boards

Function: System internal signal routing, customer field I/O signal conversion and distribution

Redundancy Support: Support simplex and TMR triple‑modular redundant excitation regulator configuration

Indicator: On‑board LED indicators for module power‑on and fault status

Installation: 6U single‑slot VME rack plug‑in installation

Operating Temperature:‑30℃ ~ +70℃, non‑condensing

Humidity:5%‑95% non‑condensing

Protection Class:IP20

Weight:0.98kg

Dimension:340mm ×145mm ×24mm

Compatible System: Gas‑steam turbine, synchronous generator EX2100 excitation control cabinet

Core Function

Exciter regulator I/O board for Mark VI and EX2100 excitation system. It acts as the core signal routing hub inside excitation regulator rack. It completes signal distribution and conversion between internal control boards such as EROC, ERDD and external customer I/O terminal boards EPCT, ECTBG2. It transmits excitation analog feedback, interlock status and trigger command signals. It supports both simplex and TMR triple‑modular redundant regulator architectures, guarantees stable signal transmission for generator excitation closed‑loop regulation and protection logic.

Product Details

The IS200ERIOH1AAA is ERIO series exciter regulator I/O interface board for GE Speedtronic Mark VI and EX2100 excitation control system.

This 6U VME board is installed on ERBP excitation regulator backplane. It undertakes signal bridge work between internal regulator modules and field customer I/O circuits. In simplex configuration, it connects with EROC, ERDD and customer terminal boards; under TMR redundant configuration, it cooperates with redundant relay modules to realize non‑interrupted signal switching for hot‑standby regulators. Multiple D‑sub connectors realize convenient docking of internal system signals and external field signals. On‑board LED indicators help maintenance staff quickly judge module working condition and locate wiring faults. Conformal coated circuit board improves anti‑vibration, moisture‑proof and anti‑electromagnetic‑interference performance, adapts to high‑noise harsh environment of power‑plant excitation cabinet. Widely applied in gas‑steam turbine generator excitation cabinets with simplex or TMR redundant configuration.

It belongs to key signal interface spare‑part for EX2100 excitation system, widely used in overhaul and renovation projects of power generation units.

It is important spare hardware for excitation regulator signal loop debugging and defective IS200ERIOH1AAA board replacement.