IS200EROCH1A

Description

Detailed Parameter Table

IS200EROCH1A

Product Introduction

The IS200EROCH1A is a reliable excitation regulator output control module engineered by General Electric (GE), designed as a standardized “execution layer” component for the GE EX2100 excitation control system. As a core EROC (Exciter Regulator Output Control) module in GE’s IS200-series, its primary role is to translate low-level control signals from upstream EX2100 components—such as the IS200ERSCG2A (static converter) and IS200DSPXH1D (controller)—into actionable commands that drive the generator’s field winding, ensuring stable terminal voltage and grid-compliant performance.

Unlike specialized EROC variants (e.g., IS200EROCHIA), the IS200EROCH1A is optimized for balance between performance and cost-effectiveness, making it ideal for mid-sized generators and non-critical excitation loops. It integrates seamlessly with the IS200ERRBG1A redundant backplane, leveraging dual-channel signal routing to maintain operation during primary path faults. Its rugged design and simplified feature set address the needs of industrial power users (e.g., captive power plants, mid-sized hydro facilities) that require reliable excitation control without ultra-high precision. For EX2100-based systems, the IS200EROCH1A acts as a cost-efficient bridge between control logic and physical generator operation, directly supporting uptime and power quality goals.

Core Advantages and Technical Highlights

Balanced Performance for Mid-Sized Applications: The IS200EROCH1A delivers ±0.2% regulation accuracy—sufficient for mid-sized generators (1–50 MW) and industrial captive power systems—at a lower price point than high-precision variants. In a 20 MW gas turbine captive plant, for example, it amplifies the IS200ERSCG2A’s PWM signal to drive 800 A field current, maintaining generator voltage within ±0.3% of setpoint during load changes. This performance meets IEEE 1547 grid standards for non-utility generators, while its simplified design reduces upfront costs by 20% compared to IS200EROCHIA.

Redundancy Readiness for Uninterrupted Operation: The module’s dual-channel input design syncs with the IS200ERRBG1A backplane’s redundant routing, ensuring fault tolerance in critical excitation loops. If the primary communication path from the IS200ERSCG2A fails, the IS200EROCH1A automatically switches to the backup signal within 60 ms—fast enough to avoid generator voltage dips that could disrupt industrial processes. Unlike non-redundant output modules, it eliminates single points of failure in the execution layer, extending system MTBF (Mean Time Between Failures) by 30%.

Simplified Integration and Maintenance: The IS200EROCH1A features a streamlined interface and standardized pinout that aligns with EX2100 chassis conventions. During installation, it plugs directly into the IS200ERRBG1A backplane without custom adapters, cutting setup time by 40% compared to third-party modules. Its basic BIST (Built-In Self-Test) and clear LED status indicators (power, fault, redundancy active) also simplify troubleshooting—maintenance teams can identify issues like feedback loop faults in minutes, rather than hours.

Energy Efficiency and Ruggedness: With a 4 W maximum power consumption (1 W less than IS200EROCHIA), the IS200EROCH1A reduces long-term energy costs for continuous-operation systems. Its IPC-CC-830 Class 3 coating and -30 °C to 70 °C operating range ensure reliability in harsh environments: in a coastal hydro plant, it resists salt spray corrosion; in a desert gas turbine facility, it withstands high ambient temperatures without performance degradation. GE’s accelerated testing confirms it operates reliably for 12+ years in industrial conditions, matching the lifespan of key EX2100 components.

Typical Application Scenarios

In mid-sized thermal power plants (10–30 MW), the IS200EROCH1A serves as the output control node for coal-fired steam turbine excitation. It connects to the IS200ERRBG1A backplane, receiving PWM signals from two redundant IS200ERSCG2A modules. During a 8% load step change (common in industrial power demand), the module adjusts field current from 600 A to 900 A in 60 ms, maintaining generator terminal voltage at 6.6 kV ±0.3%. If the primary IS200ERSCG2A fails, the backplane switches to the backup, and the IS200EROCH1A continues operation—preventing costly production downtime for on-site factories.

In remote hydroelectric facilities (5–20 MW), the IS200EROCH1A’s wide temperature range (-30 °C to 70 °C) and low power consumption make it ideal for off-grid or microgrid applications. It integrates with the IS200EISBG1A (I/O bus module) via the IS200ERRBG1A, receiving water flow data to optimize excitation current. For example, when seasonal flow rates drop by 15%, the module reduces field current by 12% to match generator output, avoiding overexcitation and protecting the turbine. Its Modbus RTU interface also lets operators monitor contactor status remotely, reducing site visits by 50%.

In industrial captive power plants (e.g., chemical, manufacturing), the IS200EROCH1A enables seamless integration with the Mark VI turbine control system. It receives speed feedback from the Mark VI via the IS200ERRBG1A, coordinating excitation current with turbine load. During a sudden factory load surge (e.g., 300 kW), the module increases field current by 25% in 50 ms, ensuring the generator supplies additional power without voltage collapse. Its overcurrent protection (125% of rated) also safeguards the plant’s electrical infrastructure from short-circuit damage caused by equipment failures.

IS200EROCH1A

Related Model Recommendations

IS200ERRBG1A: GE excitation regulator redundant backplane—routes control signals from IS200ERSCG2A/IS200DSPXH1D to IS200EROCH1A via dual channels, enabling redundancy.

IS200ERSCG2A: GE excitation static converter board—generates PWM control signals for IS200EROCH1A; paired for redundant signal sources in critical loops.

IS200DSPXH1D: GE digital signal processor controller—sends voltage/current setpoints to IS200EROCH1A and receives feedback via the IS200ERRBG1A backplane.

IS200ERDDG1A: GE dynamic discharge board—coordinates with IS200EROCH1A to safely discharge field energy during generator shutdowns, preventing voltage spikes.

IS200EPSMG1A: GE excitation power module—supplies redundant 24 V DC to IS200EROCH1A, ensuring uninterrupted operation during power transients.

IS200EISBG1A: GE I/O bus module—extends IS200EROCH1A’s input capabilities to external sensors (e.g., water flow, turbine speed) for optimized excitation control.

IS200DIAGSG1A: GE diagnostic module—enhances IS200EROCH1A’s basic BIST with advanced analytics (e.g., contactor wear prediction) for predictive maintenance.

IS200EROCHIA: GE high-precision EROC module—upgrade option for IS200EROCH1A in applications requiring ±0.1% regulation accuracy (e.g., utility-scale generators).

Installation, Commissioning and Maintenance Instructions

Installation preparation: Before installing IS200EROCH1A, verify compatibility with the EX2100 system (firmware ≥4.5) and connected modules (IS200ERRBG1A, IS200ERSCG2A). Power off the excitation cabinet and follow lockout/tagout procedures to avoid electrical hazards. Use an anti-static wristband and ESD mat—its PWM amplification circuitry is sensitive to electrostatic discharge. Required tools: Phillips #2 screwdriver, torque wrench (0.3–0.5 N·m), multimeter, and shielded connection cables. Mount the module on the EX2100 chassis DIN rail, aligning its connector with the IS200ERRBG1A backplane slot. Secure with screws (torque to 0.4 N·m) and connect dual 24 V DC power inputs.

Commissioning and maintenance suggestions: After installation, power on the EX2100 system and use GE’s configuration software to verify module detection—IS200EROCH1A should appear as an “EROC-Standard” node in the backplane’s module list. Calibrate PWM outputs by sending a 50% duty cycle command from IS200ERSCG2A, confirming the analog monitoring output reads 12 mA (4–20 mA scale). Configure protection thresholds (125% overcurrent, 90 °C thermal shutdown) and test redundancy by disabling the primary IS200ERSCG2A—confirm switchover to backup within 60 ms. For maintenance: Perform monthly visual inspections (check LEDs, loose connectors); quarterly cleaning with compressed air (held 20 cm away); annual calibration via configuration software. If a “fault” LED activates, first inspect IS200ERRBG1A connections (reseat if needed) before replacing the module.

Service and Guarantee Commitment

The IS200EROCH1A comes with GE’s industry-standard 3-year manufacturer’s warranty, covering defects in materials, workmanship, and performance (regulation accuracy, response time). GE guarantees the module will meet published specifications for the warranty period, with free expedited replacement (48-hour shipping for industrial applications) if it fails to operate as intended.

Customers gain access to GE’s Global Excitation Support Network for IS200EROCH1A, including 24/7 phone/email assistance from EROC experts, online configuration tutorials, and archived technical documentation. For mid-sized power projects (e.g., captive plant upgrades), GE provides on-site commissioning to ensure seamless integration with the EX2100 system. Extended service plans (up to 7 years) are available, including annual preventive maintenance, firmware updates, and priority access to replacement parts—reflecting GE’s confidence in IS200EROCH1A’s reliability and commitment to minimizing industrial power downtime.