IS200EROCH1A GE Regulator Card | EX2100 Generator Field Control

Product Overview

The GE IS200EROCH1A (EROC) serves as the Exciter Regulator Output Board within the EX2100 excitation control series. This module executes the critical final stage of regulation, delivering conditioned and controlled output signals from the exciter regulator circuits directly to the generator field. By stabilizing the excitation current, the EROC board maintains the required magnetic field strength for consistent voltage generation. While primarily associated with the EX2100 and Mark VI platforms, this versatile "Options Card" also supports legacy Mark V turbine control systems, providing an essential upgrade path for enhanced regulator functionality.

Condition: 100% Brand New, Factory Original.

Technical Specifications

The IS200EROCH1A utilizes high-performance linear circuitry to ensure ripple-free signal delivery to the generator field.

Engineering Advantages

• Precision Output Regulation: The EROC board employs high-stability operational amplifiers to condition regulator signals. This precision eliminates fluctuations in the generator field, which directly prevents voltage hunting and improves overall grid synchronization stability.

• Legacy System Interoperability: Unique to this module, the IS200EROCH1A offers backward compatibility with Mark V turbine control systems. It provides an immediate performance boost for older regulator lineups without requiring a full system forklift upgrade.

• Simplex Rack Interchangeability: In simplex control configurations, the EROC board functions as a direct interchangeable replacement for the EGDM board. This versatility reduces spare part inventory requirements for plants managing diverse GE control vintages.

• Active Short-Circuit Mitigation: The board monitors output current levels in real-time. If it detects a fault in the field wiring or the generator field itself, the onboard protection circuitry clamps the output and triggers a fail-safe alarm, preventing damage to the upstream regulator processors.

• Robust Signal Isolation: Integrated galvanic isolation layers prevent high-energy transients from the generator field from migrating back into the sensitive digital control backplane. This protects the core EX2100 CPU modules from electrical noise and surges.

FAQs

Q: Can the IS200EROCH1A replace an EGDM board in any configuration?

A: You can swap the EROC with an EGDM board specifically when used in simplex control racks. For TMR (Triple Modular Redundant) systems, always verify the specific hardware configuration and firmware revision in your GE documentation to ensure proper voting logic synchronization.

Q: What is the primary difference between the EROC and the EAUX auxiliary board?

A: The EAUX board handles secondary monitoring and auxiliary signals (like fan status or cabinet temperature). The EROC (IS200EROCH1A) is a primary regulation component that directly influences the generator field excitation output.

Q: Does this module require specialized cooling?

A: No. The board utilizes passive convection cooling and operates within a standard range of 0°C to +60°C. However, ensure the EX2100 cabinet filters remain clean to maintain adequate airflow over the output power components.

Q: How does the "H1A" suffix impact compatibility?

A: "H1A" represents the specific functional and artwork revision. This version is the standard for high-speed EX2100 regulator outputs. While it is highly compatible across Mark V and Mark VI systems, check your existing board's revision to ensure matching gain constants and signal scaling.