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General Electric IC660BSM120 Genius I/O Bus Switching Module
Manufacturer: GE Fanuc (Emerson Automation)
Product Number: IC660BSM120
Category: Genius I/O Bus Switching Module
System Compatibility: GE Genius I/O industrial control system
Function: Ensures uninterrupted data transmission acting as a data flow controller for critical industrial environments
Product Description
The IC660BSM120 is a high-reliability communication module developed by GE Fanuc (now Emerson Automation) for the Genius I/O industrial control system. Designed to ensure uninterrupted data transmission in critical environments, it acts as a dual-bus redundancy solution, allowing seamless switching between two independent communication paths. This capability is vital for industries like manufacturing, energy, and petrochemicals, where downtime can lead to significant losses.
Key Features and Functionality
Dual-Bus Redundancy
Connects Genius I/O blocks to two serial buses simultaneously, creating a backup communication path.
Automatically switches to the secondary bus if the primary bus fails, ensuring continuous operation.
Supports up to 8 I/O blocks per module; additional modules can expand capacity to 30 blocks on the same dual bus.
Power Flexibility
Operates on 115V AC/125V DC (unlike the IC660BSM021, which uses 24/48V DC), making it suitable for AC-powered industrial setups.
Low power consumption: 60 mA at 115V AC or 12 mA at 120V DC.
Rugged Industrial Design
Operating temperature range: 0–60°C (32–140°F), withstanding harsh factory environments.
High reliability: Minimum 500,000 operations and <20 ms switching time during bus failures.
DIN rail mounting for easy integration into control panels.
Configuration and Control
Configurable via IC660HHM501 Hand-Held Monitor or directly through the CPU.
A dedicated output on a Phase B discrete block triggers bus switching based on communication status.
Technical Specifications
| Parameter | Value/Description |
| Product Model | IC660BSM120 |
| Manufacturer | GE Fanuc (Emerson Automation) |
| Core Function | Dual-bus redundancy for Genius I/O systems; seamless failover during bus outages. |
| Power Input | 115V AC (90–130V) or 125V DC (95–150V). |
| I/O Capacity | Up to 8 I/O blocks per module; expandable to 30 with additional modules. |
| Communication Speed | Optimized for Genius I/O protocol (153.6 kbaud). |
| Physical Dimensions | 3.5 × 2.3 × 2.5 inches (89 × 58 × 64 mm); weight: 0.66 lb (0.3 kg). |
| Compatibility | GE Genius I/O modules, IC660HHM501, and GE 90-70/6/5 series PLCs. |
Application Scenarios
Automotive Manufacturing
A Southeast Asian automotive plant reduced downtime by 54 hours annually using the IC660BSM120 to eliminate communication failures between I/O modules and PLCs. The dual-bus design ensured uninterrupted operation during bus faults.
Petrochemical Processing
A U.S. refinery deployed the IC660BSM120 in hazardous areas to maintain connectivity between remote I/O racks and control systems. The module’s rugged design and redundant buses minimized signal drops in corrosive environments.
Power Generation
A power plant used the IC660BSM120 to ensure continuous monitoring of critical sensors in steam turbines. The dual-bus redundancy prevented data loss during transient electrical disturbances.
Installation and Maintenance
Installation Steps
Mount on a DIN rail within the control panel.
Connect the module to two independent buses (Bus A and Bus B) using GE-approved cables (e.g., IC660CBL100).
Configure the module via the HHM or CPU to define failover logic.
Maintenance Tips
Inspect bus connections quarterly for corrosion or loose fittings.
Replace the module if the “Bus B Active” LED fails to illuminate during a simulated bus failure test.
Perform firmware updates via the HHM to ensure compatibility with the latest Genius I/O protocols.
Availability and Support
Status: Discontinued by the manufacturer but available through authorized resellers and surplus suppliers.
Warranty: Typically 12 months from resellers; refurbished units may offer shorter terms.
Technical Support: Emerson provides documentation and troubleshooting guides via its industrial support portal.
Conclusion
The IC660BSM120 is a cornerstone of GE’s Genius I/O redundancy strategy, delivering robust dual-bus communication in industrial environments. Its ability to switch buses in milliseconds and support up to 30 I/O blocks makes it ideal for mission-critical applications where downtime is unacceptable. While discontinued, its reliability and compatibility with legacy GE systems ensure it remains a viable solution for maintaining operational continuity.
General Electric IC660BSM120 Genius I/O Bus Switching Module
Manufacturer: GE Fanuc (Emerson Automation)
Product Number: IC660BSM120
Category: Genius I/O Bus Switching Module
System Compatibility: GE Genius I/O industrial control system
Function: Ensures uninterrupted data transmission acting as a data flow controller for critical industrial environments
Product Description
The IC660BSM120 is a high-reliability communication module developed by GE Fanuc (now Emerson Automation) for the Genius I/O industrial control system. Designed to ensure uninterrupted data transmission in critical environments, it acts as a dual-bus redundancy solution, allowing seamless switching between two independent communication paths. This capability is vital for industries like manufacturing, energy, and petrochemicals, where downtime can lead to significant losses.
Key Features and Functionality
Dual-Bus Redundancy
Connects Genius I/O blocks to two serial buses simultaneously, creating a backup communication path.
Automatically switches to the secondary bus if the primary bus fails, ensuring continuous operation.
Supports up to 8 I/O blocks per module; additional modules can expand capacity to 30 blocks on the same dual bus.
Power Flexibility
Operates on 115V AC/125V DC (unlike the IC660BSM021, which uses 24/48V DC), making it suitable for AC-powered industrial setups.
Low power consumption: 60 mA at 115V AC or 12 mA at 120V DC.
Rugged Industrial Design
Operating temperature range: 0–60°C (32–140°F), withstanding harsh factory environments.
High reliability: Minimum 500,000 operations and <20 ms switching time during bus failures.
DIN rail mounting for easy integration into control panels.
Configuration and Control
Configurable via IC660HHM501 Hand-Held Monitor or directly through the CPU.
A dedicated output on a Phase B discrete block triggers bus switching based on communication status.
Technical Specifications
| Parameter | Value/Description |
| Product Model | IC660BSM120 |
| Manufacturer | GE Fanuc (Emerson Automation) |
| Core Function | Dual-bus redundancy for Genius I/O systems; seamless failover during bus outages. |
| Power Input | 115V AC (90–130V) or 125V DC (95–150V). |
| I/O Capacity | Up to 8 I/O blocks per module; expandable to 30 with additional modules. |
| Communication Speed | Optimized for Genius I/O protocol (153.6 kbaud). |
| Physical Dimensions | 3.5 × 2.3 × 2.5 inches (89 × 58 × 64 mm); weight: 0.66 lb (0.3 kg). |
| Compatibility | GE Genius I/O modules, IC660HHM501, and GE 90-70/6/5 series PLCs. |
Application Scenarios
Automotive Manufacturing
A Southeast Asian automotive plant reduced downtime by 54 hours annually using the IC660BSM120 to eliminate communication failures between I/O modules and PLCs. The dual-bus design ensured uninterrupted operation during bus faults.
Petrochemical Processing
A U.S. refinery deployed the IC660BSM120 in hazardous areas to maintain connectivity between remote I/O racks and control systems. The module’s rugged design and redundant buses minimized signal drops in corrosive environments.
Power Generation
A power plant used the IC660BSM120 to ensure continuous monitoring of critical sensors in steam turbines. The dual-bus redundancy prevented data loss during transient electrical disturbances.
Installation and Maintenance
Installation Steps
Mount on a DIN rail within the control panel.
Connect the module to two independent buses (Bus A and Bus B) using GE-approved cables (e.g., IC660CBL100).
Configure the module via the HHM or CPU to define failover logic.
Maintenance Tips
Inspect bus connections quarterly for corrosion or loose fittings.
Replace the module if the “Bus B Active” LED fails to illuminate during a simulated bus failure test.
Perform firmware updates via the HHM to ensure compatibility with the latest Genius I/O protocols.
Availability and Support
Status: Discontinued by the manufacturer but available through authorized resellers and surplus suppliers.
Warranty: Typically 12 months from resellers; refurbished units may offer shorter terms.
Technical Support: Emerson provides documentation and troubleshooting guides via its industrial support portal.
Conclusion
The IC660BSM120 is a cornerstone of GE’s Genius I/O redundancy strategy, delivering robust dual-bus communication in industrial environments. Its ability to switch buses in milliseconds and support up to 30 I/O blocks makes it ideal for mission-critical applications where downtime is unacceptable. While discontinued, its reliability and compatibility with legacy GE systems ensure it remains a viable solution for maintaining operational continuity.
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