Basic Information

• Model: IS200ERIOH1AAA

• Brand & Series: GE Speedtronic Mark VI / Mark VIe Turbine Control System, EX2100 Excitation Control System (ERIO: Exciter Regulator I/O Board, Main I/O Board for Exciter Regulator)

• Product Type: Main I/O Interface Board for Exciter Regulator, Core Module for Excitation System Signal Acquisition & Control Output, Dedicated I/O Board for EX2100 Excitation System

• Compatible Systems: GE Mark VI, Mark VIe TMR (Triple Modular Redundant) Control System, EX2100 Synchronous Generator Excitation Regulation System, compatible with EROC, ERGT, EPSM and other excitation sub-modules

• Country of Origin: USA

• Function: Realizes excitation system analog/digital signal acquisition, control command output, external device interface and fault status feedback; serves as the core signal interaction hub between the exciter regulator and field sensors, actuators and relays

Product Overview

Core Functions

1. Multi-channel Isolated Signal Acquisition: Provides multiple isolated digital inputs (DI) and analog inputs (AI, supporting 4–20mA, ±10VDC, RTD) to collect key excitation system signals such as generator voltage, current, temperature, switch status and ground fault. Electrical isolation between input/output channels suppresses ground loops and electromagnetic interference.

2. Control Signal Drive Output: Outputs multiple isolated relay/digital outputs (DO) to drive excitation switches, de-excitation devices, protection relays, alarm circuits and actuators, realizing functions such as excitation switching, de-excitation, protection action and status feedback.

3. Electrical Isolation & Anti-Interference: High isolation (≥2500Vrms) between input/output and channels, built-in EMI filtering and surge suppression, adapting to industrial sites with strong electromagnetic interference, ensuring signal accuracy and system safety.

4. Multiple Safety Protections: Integrates overvoltage, overcurrent, short-circuit, reverse polarity and over-temperature protection, automatically cutting off outputs during faults to prevent damage to modules, sensors and excitation equipment.

5. Fault Diagnosis & Status Indication: On-board LED indicators for real-time display of power, communication, input/output and fault status, supporting remote system diagnosis and fast I/O fault location, reducing maintenance downtime.

6. Redundancy Compatibility & Hot-Swapping: Supports simplex/dual-redundant configurations with automatic bumpless switching; standard Mark VI slot installation, VME backplane compatible, supports hot-swapping and online replacement without system interruption.

7. Industrial-Grade Reliable Design: Wide temperature range, anti-vibration, moisture/dust resistant, UL94 V‑0 flame retardant, meeting SIL safety level requirements, adapting to harsh working conditions in power plants, offshore platforms and hazardous areas (ATEX).

Technical Specifications

• Input Power: 24VDC (nominal), range 18–32VDC, isolated power supply

• I/O Configuration: 16 isolated digital inputs (DI, 0–30VDC, configurable positive/negative logic); multiple analog inputs (AI, 4–20mA, ±10VDC, RTD); 16 isolated relay outputs (DO, max 2A/24VDC)

• Isolation Voltage: ≥2500Vrms between input/output and channels, strong anti-EMI capability

• Protection Functions: Overvoltage, overcurrent, short-circuit, reverse polarity, over-temperature protection, automatic fault shutdown

• Power Consumption: Typical 10W, max ≤12W

• Temperature: Operating -40°C to +85°C; Storage -40°C to +85°C

• Relative Humidity: 5%–95% (non-condensing)

• Dimensions: Standard Mark VI PCB size, approx. 340×216×55mm (13.39×8.5×2.17 inches); Weight approx. 1.0kg (2.2lb)

• Mounting: Standard Mark VI cabinet slot installation, VME backplane connection, hot-swappable and online maintenance supported

• Protection Rating: IP20 (cabinet-mounted), UL94 V‑0 flame retardant, anti-vibration/anti-EMI design

• Certifications: IEC 61508 SIL 2, CE, UL 61010-1, ATEX (hazardous location approved)

• MTBF: >150,000 hours

Typical Applications

• Main I/O signal acquisition and control output for EX2100 excitation systems in Mark VI/Mark VIe gas turbines and steam turbines

• Acquisition of synchronous generator terminal voltage, excitation current, power factor, temperature and ground fault signals

• Excitation switch control, de-excitation circuit drive, protection relay actuation, alarm and status feedback output

• Excitation control for generator sets in combined-cycle power plants, thermal power plants, petrochemical drive units and offshore platforms

• Replacement of excitation I/O modules for legacy Mark VI/EX2000 system upgrades

• I/O signal interaction and redundant switching for TMR triple redundant architecture of excitation systems