GE IS200EROCH1ABB EROC Exciter Regulator Options Card EX2100 Generator Excitation System
- Product Code: IS200EROCH1ABB
- Availability: In Stock
GE IS200EROCH1ABB EROC Exciter Regulator Options Card EX2100 Generator Excitation System
Manufacturer: GE Vernova Power Generation
Model: IS200EROCH1ABB EROC Exciter Regulator Options Card
Compatible Platform: GE EX2100 digital generator excitation control rack; mates with IS200ERGTH1A rotor ground detection board, separate from Mark VIe turbine control hardware
Type: Single-slot VME plug-in extension board for generator excitation regulation, conformal coated PCB
Core Function: Excitation limit algorithm expansion, rotor earth fault detection interface, dual RS232 commissioning ports, isolated power supply for external excitation terminal boards, ISBUS inter-board communication & fault diagnostic logging
1. Product Overview
IS200EROCH1ABB (EROC) is the dedicated extension option board for GE EX2100 digital excitation systems for synchronous generators, installed in VME slots of generator excitation control cabinets, independent of Mark VI/VIe gas/steam turbine main control racks.
It expands the core excitation controller’s control logic, implementing multi-set excitation limit functions (overexcitation, underexcitation, V/Hz, stator current, power factor). It provides dedicated interface signal channels for IS200ERGTH1A rotor ground fault detection board to monitor generator field winding insulation leakage resistance.
Dual independent RS232 serial ports on front and rear panels support local/remote commissioning, parameter tuning, fault waveform capture and program download via laptop or handheld HMI. The board supplies isolated 24VDC excitation power to external analog signal terminal assemblies for voltage, current and temperature transducers, with multi-stage surge suppression and EMI filtering to resist high noise from thyristor power stages.
On-board diagnostic circuit monitors supply voltage, ISBUS communication link and external ground detection loop status, records millisecond fault timestamps and fault codes retrievable via GE Toolbox software. Conformal coated PCB withstands high-temperature, high-humidity power plant cabinet environments. GE discontinued original new production, only surplus stock and refurbished replacement spares available aftermarket.
2. Full Technical Specifications
• System Platform: GE EX2100 digital excitation control (not compatible with Mark VIe turbine VME racks)
• Form Factor: Single width VME standard rack card, single slot mounting
• Backplane Bus: Proprietary ISBUS high-speed parallel inter-board communication bus
• Serial Communication: Dual RS232 D-sub debug ports (front panel + rear backplane)
• Matching Hardware: IS200ERGTH1A rotor ground leakage detection module
• Built-in Components: 4 high-voltage electrolytic buffer capacitors, on-board control processor, non-volatile fault log memory
• Auxiliary Power Output: Isolated regulated 24VDC for external excitation signal terminal boards
• Diagnostic Indicators: Power OK LED, dual ISBUS communication status LEDs
• Isolation Rating: 1500VAC channel-to-backplane galvanic isolation
• Operating Power: 18–36VDC rack auxiliary DC supply, consumption ≤9W
• Operating Temperature: -20℃ ~ +70℃ ventilated excitation cabinet
• Environmental Protection: Conformal coated FR4 PCB, UL94 V-0 flame retardant housing
• Physical Dimension: 230mm H × 160mm W × 45mm D, weight ~0.78kg
• Certifications: UL508, CE industrial control compliance, GE generator excitation safety specification
3. On-board Hardware Layout
1. Front panel: Power LED, two ISBUS status LEDs, front RS232 D-sub debug connector
2. Main PCB: Control processor, non-volatile fault memory, multi-channel signal conditioning circuits
3. Four high-voltage electrolytic capacitors for power rail surge buffering
4. Rear secondary RS232 keyboard port for rear cabinet remote commissioning
5. Dual-row gold-plated VME backplane connector for ISBUS communication & rack power input
6. Isolated 24VDC auxiliary power generation circuit for external terminal boards
4. System Hardware Matching Relationship
• IS200EROCH1ABB (EROC): Excitation algorithm extension & ground detection interface board (EX2100 exclusive)
• IS200ERGTH1A: Rotor winding ground leakage resistance detection slave board, wired to EROC channel
• EX2100 Main CPU: Core excitation voltage regulation master controller, communicates with EROC via ISBUS
• Distinction from Mark VIe series: IS210AEPSG1AFC / IS210WSVOH1AE / IS200TRPAH2AHE are turbine control cards, cannot be installed in EX2100 excitation rack
• Signal chain: Generator field winding → ERGTH ground detector → EROC interface → EX2100 main CPU → thyristor power stage excitation output
5. Core Power Generation Application Scenarios
• Coal-fired steam turbine generator EX2100 excitation cabinet: Rotor insulation monitoring, multi-limit excitation control extension
• Combined-cycle gas turbine generator excitation system: Power factor & reactive power stable regulation algorithm expansion
• Hydropower synchronous generator excitation control: Long-term rotor ground fault online continuous monitoring
• Cogeneration industrial generator unit: On-site excitation parameter commissioning via dual RS232 debug ports
GE Vernova © IS200EROCH1ABB EROC Exciter Regulator Options Card EX2100 Generator Excitation Control System