IC660BSM120 Dual Bus Switch | GE Fanuc Genius I/O Serial Bus Module

GE Fanuc IC660BSM120 Genius I/O Bus Switching Module for AC/DC Dual Bus Systems

Bus Switching Specifications and Electrical Ratings

• Brand: GE Fanuc | Part Number: IC660BSM120 | Type: Genius I/O Bus Switching Module for 115 VAC/125 VDC systems.
• Operating Voltage: 90 to 130 Volts AC and 95 to 150 Volts DC for broad application compatibility.
• I/O Block Capacity: Supports up to 8 discrete and analog blocks per BSM; 30 blocks maximum with additional BSMs.
• Switching Performance: Complete bus transfer in less than 20 milliseconds with 500,000 operation minimum reliability.
• Current Draw: 60 milliamps maximum at 115 Volts AC; 12 milliamps maximum at 120 Volts DC.
• Bus A State: Module maintains de-energized state below 65 Volts AC/DC when operating on Bus A.
• Physical Size: Compact 3.5 x 2.3 x 2.5 inch footprint for standard control panel installation.
• Temperature Range: 0 to 60 degrees Celsius operating environment for industrial applications.

Dual Bus Redundancy and Operational Control

• Backup Communications: Provides automatic failover to secondary bus immediately upon loss of primary bus communication.
• Control Source: Phase B discrete block in the cluster manages all IC660BSM120 switching operations and timing.
• Bus Selection: Module energizes only when selecting Bus B; front-panel LED illuminates when Bus B remains active.
• Switching Methods: Manual command via CPU, Genius handheld monitor, or automatic trigger upon communication loss.
• Anti-Cycling Protection: Prevents unnecessary repeated switching attempts when alternate bus remains unavailable.
• System Integration: Each bus pairs with a bus controller or PCIM; supports CPU redundancy with controllers in separate CPUs.

Configuration and System Compatibility

• Configuration Tools: Genius handheld monitor or CPU programming for complete parameter setup and bus selection logic.
• Version Differentiation: IC660BSM120 uses 115 VAC/125 VDC power; IC660BSM021 uses 24/48 VDC with identical functionality.
• Cluster Control: Dedicated output circuit on the controlling block enables automatic bus switching during communication loss.
• Serial Connectors: Two serial bus interfaces for simultaneous dual bus attachment and redundant path operation.
• AC System Support: Specifically designed for AC-powered I/O blocks and high-voltage DC control applications.

Frequently Asked Questions

• What is the primary function of the IC660BSM120? This module connects Genius I/O blocks to two serial buses simultaneously and provides automatic failover during bus failures.
• How many I/O blocks can one IC660BSM120 support? A single BSM supports up to 8 discrete and analog blocks; additional BSMs extend total capacity to 30 blocks.
• What power source does the IC660BSM120 require? Operating voltage ranges from 90 to 130 Volts AC or 95 to 150 Volts DC.
• How fast does the bus switch activate? Switching completes in less than 20 milliseconds with 500,000 operation minimum reliability rating.
• How do I configure the BSM for my system? Use any Genius handheld monitor or program the switching logic through the CPU.
• What controls the BSM switching operation? The Phase B discrete block in the cluster controls all IC660BSM120 functions through a dedicated output circuit.
• Do you stock the IC660BSM120? Yes, we maintain genuine new original units ready for immediate shipment.
• What is your shipping timeframe? We dispatch orders within 5 days via DHL, FedEx, or UPS.
• Can I return this item? Yes, we accept returns within 30 days for unused product in original condition.
• What cables ship with this module? Each unit includes three 15-inch prefabricated serial bus cables for immediate dual bus connection.
• What is the difference between IC660BSM120 and IC660BSM021? The IC660BSM120 operates on 115 VAC/125 VDC; the IC660BSM021 operates on 24/48 VDC. Functionality and form factor remain identical.
• What is the operating temperature range? The IC660BSM120 operates reliably from 0 to 60 degrees Celsius.

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