Description
Product Description: GE IS200RCSBG1B
Detailed Parameter Table
| Parameter Name | Parameter Value |
| Product model | IS200RCSBG1B |
| Manufacturer | General Electric (GE) |
| Product category | Redundant Control System Backplane Gateway (EX2100 Excitation Control Series) |
| Core function | Redundant backplane communication; control signal routing; system synchronization; fault detection |
| Communication interfaces | GE EX2100 backplane bus (dual redundant); Ethernet (Modbus TCP/IP, EtherNet/IP); RS485 (Modbus RTU) |
| Redundancy architecture | 1:1 hot standby with automatic failover <50 ms |
| Data transfer rate | Up to 1 Mbps (backplane); 10/100 Mbps (Ethernet) |
| Power requirement | 24 V DC (redundant inputs, 22–26 V DC); 7 W max power consumption |
| Operating temperature | -40 °C to +70 °C (-40 °F to 158 °F) |
| Physical dimensions | 232 mm × 165 mm × 89 mm (9.13 in × 6.50 in × 3.50 in) |
| Mounting method | EX2100 chassis backplane mount |
| Isolation voltage | 1500 Vrms (control to field circuits) |
| Protection features | ESD immunity ±15 kV (air), ±8 kV (contact); overvoltage protection; short-circuit protection |
| Compliance standards | UL 508, IEC 61010-1, IEC 61326-1, RoHS 3, CE |
| Weight | ~1.2 kg (2.65 lbs) |

IS200ERIOH1A
Product Introduction
IS200RCSBG1B is a high-reliability redundant control system backplane gateway developed by General Electric (GE) specifically for the EX2100 excitation control system. As the communication backbone of the EX2100 platform, IS200RCSBG1B provides a critical bridge between the system’s control modules and external devices, ensuring seamless data flow even in the event of hardware failures.
This module features a redundant architecture with dual backplane interfaces and automatic failover capability, making it ideal for mission-critical applications where system downtime is unacceptable. IS200RCSBG1B not only routes control signals between modules like IS200DSPXH1D (controller) and IS200ERIOH1A (I/O module) but also provides connectivity to plant-wide systems via standard industrial protocols. Its rugged design and wide operating temperature range make it suitable for harsh environments found in power generation facilities worldwide.
Core Advantages and Technical Highlights
High-Availability Redundancy: IS200RCSBG1B incorporates a 1:1 hot standby architecture with automatic failover capability. This means that if one communication path fails, the module seamlessly switches to the redundant path in less than 50 ms—fast enough to prevent process interruptions. This level of redundancy is crucial for maintaining excitation control during critical grid events, where even brief communication loss could lead to generator instability.
Multi-Protocol Connectivity: Unlike many proprietary backplane systems, IS200RCSBG1B offers flexible connectivity options including Ethernet (Modbus TCP/IP, EtherNet/IP) and RS485 (Modbus RTU). This allows the EX2100 system to integrate with a wide range of plant control systems and monitoring equipment without the need for additional protocol converters.
Robust Industrial Design: IS200RCSBG1B is built to withstand the harsh conditions typical in power generation environments. With an operating temperature range of -40°C to +70°C and high immunity to electromagnetic interference, this module provides reliable operation even in electrically noisy environments such as turbine halls and switchyards.
Seamless System Integration: As a native component of the EX2100 ecosystem, IS200RCSBG1B integrates perfectly with other GE modules including IS200DSPXH1D, IS200ERIOH1A, and IS200EPBPG1A. This plug-and-play compatibility simplifies system design and reduces integration challenges during commissioning.
Typical Application Scenarios
In large thermal power plants (500-1000 MW), IS200RCSBG1B serves as the communication backbone for the excitation control system. It connects the primary controller (IS200DSPXH1D) with various I/O modules (IS200ERIOH1A, IS200EMIOH1A) and power distribution modules (IS200EPBPG1A, IS200EPDMG1B). The redundant design ensures that even if one communication path is disrupted—whether due to component failure or electromagnetic interference—the excitation system continues operating without interruption.
For offshore wind farms, IS200RCSBG1B provides reliable communication between the nacelle-mounted excitation components and the onshore control center. Its wide temperature range and robust construction make it suitable for the harsh marine environment, while its redundant architecture ensures maximum availability for these remote installations where maintenance access is limited.
In nuclear power plants, where safety and reliability are paramount, IS200RCSBG1B plays a critical role in the excitation control system. It provides the necessary communication redundancy to meet stringent safety requirements, ensuring that the generator can be safely controlled even in the event of equipment failures or environmental anomalies.
Related Model Recommendations
IS200DSPXH1D: GE’s digital signal processor controller—serves as the “brain” of the EX2100 system, working in conjunction with IS200RCSBG1B for system control and monitoring.
IS200ERIOH1A: GE’s excitation regulator I/O module—handles analog and digital signals, communicating with the controller through IS200RCSBG1B.
IS200EMIOH1A: GE’s enhanced I/O interface module—provides additional I/O capabilities and signal conditioning, connected via IS200RCSBG1B.
IS200EPBPG1A: GE’s excitation power backplane gateway—manages power distribution and communication routing, working with IS200RCSBG1B for system-wide integration.
IS200EPDMG1B: GE’s excitation power distribution module—supplies power to various system components, monitored and controlled through IS200RCSBG1B.
IS200ERSCG2A: GE’s static converter module—controls generator field current, receiving commands via IS200RCSBG1B.
IS200SAIIH2A: GE’s safety interlock interface module—provides safety monitoring capabilities, communicating safety status through IS200RCSBG1B.
IS200ERRBG1A: GE’s excitation redundant backplane—complements IS200RCSBG1B by providing additional backplane redundancy in large systems.

IS200ERIOH1A
Installation, Commissioning and Maintenance Instructions
Installation preparation: Before installing IS200RCSBG1B, verify that the EX2100 chassis is properly prepared with the correct backplane revision. Ensure that all power is disconnected and appropriate lockout/tagout procedures are followed. Use anti-static equipment when handling the module to prevent damage to sensitive components.
Mount IS200RCSBG1B in the designated slot in the EX2100 chassis, ensuring proper alignment with the backplane connector. Connect the redundant 24V DC power supplies, ensuring correct polarity. Connect the Ethernet and/or RS485 communication cables according to the system design.
Commissioning: After physical installation, power up the system and verify that IS200RCSBG1B is recognized by the system controller. Configure the communication parameters including IP address (for Ethernet) and baud rate (for RS485). Test the redundancy functionality by disconnecting one of the communication paths and verifying that the system continues operating without interruption.
Maintenance suggestions: Perform regular visual inspections of IS200RCSBG1B to check for signs of physical damage or overheating. Monitor the module’s status through the system HMI, paying particular attention to any communication fault indicators.
Periodically clean the module’s cooling vents to ensure proper airflow. Test the redundancy failover mechanism at least annually to ensure it functions correctly. Before performing any maintenance, ensure that proper safety procedures are followed, including system shutdown and lockout/tagout as required.
Service and Guarantee Commitment
IS200RCSBG1B is backed by GE’s comprehensive 3-year warranty, covering defects in materials and workmanship. GE guarantees that IS200RCSBG1B will perform according to published specifications when properly installed and maintained.
Customers receive access to GE’s global technical support network, including 24/7 phone and email assistance from excitation system specialists. GE provides detailed documentation, including installation manuals, configuration guides, and troubleshooting resources to ensure successful implementation of IS200RCSBG1B.
Full 12-month warranty on all components
Dedicated after-sales support
Same-day dispatch on 1000s of parts
All units are fully tested
- 1. Email confirmation
You will get an email confirming that we have received your enquiry. - 2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition. - 3. Your quote
You will receive a comprehensive quote tailored to your specific needs.


Full 12-month warranty
Available for dispatch immediately
We deliver worldwide
Full 12-month warranty on all components