Description
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | General Electric |
| Model | IS200EBRGH2ABA |
| Series | Mark VI / Speedtronic™ |
| Board Type | Enhanced Bus Remote Gateway Interface |
| Remote I/O Interfaces | 2× fieldbus/remote I/O ports (configurable) |
| Supported Protocols | GE proprietary remote I/O protocol, Modbus RTU, other fieldbus variants |
| Data Transfer Rate | Up to 10 Mbps (depending on protocol and distance) |
| Onboard Processing | Enhanced processor with remote I/O protocol firmware |
| Remote I/O Support | Distributed I/O racks, remote actuator/sensor nodes, expansion chassis |
| Communication Modes | Master/Slave, Peer-to-Peer (depending on configuration) |
| Network Redundancy | Optional dual-bus redundancy for critical remote I/O networks |
| Backplane Interface | VME bus (P1/P2 connectors) |
| Power Requirements | +5V DC / 2.5A, ±15V DC / 0.5A |
| Operating Temperature | -30°C to +65°C |
| Storage Temperature | -40°C to +85°C |
| MTBF | > 110,000 hours |
| Suffix Meaning | “ABA” = specific firmware/configuration variant for remote I/O optimization |
Advantages and Key Features
Distributed Control Capability: The IS200EBRGH2ABA enables the Mark VI system to control remote I/O racks and field devices located at significant distances from the main control cabinet, reducing wiring costs and simplifying large plant installations.
Enhanced Processing for Remote Communication: The “2” series features a powerful processor on the IS200EBRGH2ABA, enabling real-time communication with remote nodes with minimal latency, critical for time-sensitive control loops.
Remote I/O Protocol Optimization: The “ABA” firmware on the IS200EBRGH2ABA includes pre-configured settings for specific remote I/O network architectures, reducing commissioning time and ensuring optimal performance.
Redundancy Support: Supports dual-bus redundancy configurations on the IS200EBRGH2ABA, ensuring continuous communication with remote I/O nodes even if one network path fails.
Comprehensive Diagnostics: Onboard diagnostics include link status monitoring, remote node status, communication error counting, and protocol-specific diagnostics, all reported to the main DSP processor.
Application Fields and Case Studies
The IS200EBRGH2ABA is used in large power plants with distributed turbine auxiliary equipment such as boiler feed pumps, condensate systems, cooling towers, and balance-of-plant equipment located far from the main control rack. It is also used in industrial facilities with geographically dispersed turbine-related equipment, retrofits where remote I/O expansion is required, and installations with multiple separate buildings or equipment areas. In a 700 MW combined-cycle plant, the IS200EBRGH2ABA was deployed to communicate with remote I/O racks located 500 meters from the main Mark VI control cabinet. The board handled real-time data exchange with boiler feed pump and condensate system I/O, eliminating the need for expensive long-distance hardwiring and reducing installation costs by 30%. The “ABA” firmware on the IS200EBRGH2ABA was pre-configured for the site’s specific remote I/O architecture, reducing commissioning time. When a communication cable fault occurred on one bus, the redundant configuration on the IS200EBRGH2ABA ensured uninterrupted communication via the alternate path.
Comparison with Competing Products
| Dimension | IS200EBRGH2ABA | IS200EBACG2ABA | Siemens IM 153 (Remote I/O) | ABB CI853 (Remote I/O) |
|---|---|---|---|---|
| Primary Function | Remote I/O gateway | Fieldbus gateway | Remote I/O adapter | Remote I/O adapter |
| Remote I/O Protocol | GE proprietary remote I/O | Fieldbus protocols | PROFIBUS DP (peripheral) | ABB remote I/O |
| Range/Distance | Optimized for remote distances | Standard fieldbus | Standard PROFIBUS | Standard |
| Redundancy Support | Yes (dual-bus) | Yes (dual-bus) | Limited | Limited |
| VME Integration | Direct (Mark VI native) | Direct (Mark VI native) | External | External |
| Diagnostics | Comprehensive + node-specific | Comprehensive + device-specific | Basic | Basic |
The IS200EBRGH2ABA offers superior remote I/O integration and distance optimization compared to external remote I/O adapters. Its direct VME backplane connection enables faster response and more comprehensive diagnostic data exchange.
Selection Recommendations
Choose the IS200EBRGH2ABA when your Mark VI installation requires communication with remote I/O racks or distributed field equipment located at significant distances from the main control cabinet. Select it over the IS200EBACG2ABA when remote I/O expansion (rather than fieldbus device integration) is the primary requirement. Deploy redundant IS200EBRGH2ABA boards for critical remote I/O networks requiring high availability. Verify that your remote I/O equipment is compatible with the IS200EBRGH2ABA protocol before commissioning. Ensure the “ABA” firmware preload matches your specific remote I/O architecture. For standard fieldbus device integration, the IS200EBACG2ABA may be more appropriate.
Precautions and Important Notes
Always use ESD-safe handling procedures when installing the IS200EBRGH2ABA. Verify communication cable quality and termination for remote I/O networks to ensure reliable long-distance communication. Configure the IS200EBRGH2ABA with correct protocol and addressing settings. Verify that the preloaded “ABA” firmware supports your specific remote I/O node types. Never interrupt firmware updates on the IS200EBRGH2ABA. When using redundant remote I/O networks, connect each bus to separate communication paths. The IS200EBRGH2ABA draws 2.5A (+5V) – verify rack power supply capacity. Document all remote I/O network settings and node configurations before board replacement. Store spare boards in anti-static packaging and rotate inventory every 24 months. Do not mix IS200EBRGH2ABA with other bus adapter variants in redundant pairs without verifying identical firmware. Consult GE engineering when integrating the IS200EBRGH2ABA with non-standard remote I/O equipment. Allow the IS200EBRGH2ABA to complete its boot sequence (approximately 30 seconds) before relying on remote I/O communication. Verify that remote I/O network cabling does not exceed maximum recommended length for the selected protocol and distance. Ensure that all remote I/O nodes are properly terminated and addressed before commissioning.

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