The Allen-Bradley 1756-RMC1 is a 1-meter (3.28 ft) duplex single-mode fiber-optic cable engineered for the ControlLogix 1756 redundancy platform. This cable serves as the high-speed synchronization link between redundant ControlLogix chassis, enabling seamless state and memory cross-loading between the Primary and Secondary controllers. By facilitating deterministic communication between redundancy modules, the 1756-RMC1 ensures high availability and zero-downtime performance in mission-critical automation applications.
Features
Optimized for side-by-side chassis configurations with a 1-meter length.
Industrial-grade duplex LC connectors for secure, reliable mating with 1756 redundancy modules.
Single-mode optical fiber construction providing complete immunity to EMI and RFI.
Supports high-speed data synchronization for 1756-RM, 1756-RM2, 1756-RMXT, and 1756-RM2XT modules.
Operating wavelength of 1300 nm for stable long-term performance.
Applications
This cable is essential for ControlLogix hot-backup configurations in industries requiring continuous operation, such as oil and gas, power generation, and chemical processing. It connects the redundancy modules to maintain synchronized I/O states and memory, preventing system failure during controller transitions.
Technical Specifications
Model
1756-RMC1
Cable Length
1.0 Meter (3.28 Feet)
Connector Type
Duplex LC
Fiber Type
Single-Mode
Operating Wavelength
1300 nm
Operating Temperature
-25 to 70 deg C
Storage Temperature
-40 to 85 deg C
Humidity
5 to 95 percent non-condensing
Installation Guidelines
Ensure the cable is routed through wire ducts to prevent physical damage or excessive tension.
Maintain the manufacturer-specified minimum bend radius to prevent signal attenuation or fiber breakage.
Inspect LC connectors for dust or debris before insertion; use appropriate fiber cleaning tools if necessary.
Avoid excessive force when seating the connectors into the 1756 redundancy module ports.
Ensure the cable is secured to prevent accidental disconnection during cabinet maintenance.
FAQ
Is this cable compatible with all ControlLogix redundancy modules? The 1756-RMC1 is compatible with the 1756-RM, 1756-RM2, 1756-RMXT, and 1756-RM2XT modules.
Can I use this cable in high-EMI environments? Yes, because the cable uses fiber-optic technology, it is inherently immune to electromagnetic and radio frequency interference, making it ideal for high-voltage industrial panels.
