Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 1756‑RMC10 |
| Manufacturer | Allen‑Bradley (Rockwell Automation) |
| Product Type | ControlLogix Redundancy Module Fiber Optic Cable |
| Cable Type | Duplex Fiber Optic |
| Connector Type | LC to LC (Duplex) |
| Length | 10 m (32.8 ft) |
| Compatible Modules | 1756‑RM, 1756‑RM2, 1756‑RMXT, 1756‑RM2XT |
| Operating Temperature | -25 to 70 °C (-13 to 158 °F) |
| Primary Function | Redundancy Link / Synchronization Cable |
| Data Transmission | Optical (Immune to EMI/RFI) |
Main Features and Advantages
EMI‑Immune Fiber Optic Link: The 1756‑RMC10 uses light instead of electrical signals to transmit synchronization data between redundancy modules. This design makes it completely immune to ground loops, voltage spikes, and electromagnetic interference from nearby motor drives or high‑power equipment, ensuring a stable and reliable heartbeat connection for critical redundant systems.Plug‑and‑Play Redundancy Setup: As a factory‑terminated cable with standard LC connectors, it eliminates the need for on‑site fiber splicing or complex termination. Engineers can simply connect it between the redundancy modules of the primary and secondary chassis, enabling a quick and error‑free setup of high‑availability systems without additional configuration.Long‑Distance Chassis Separation: The 10‑meter length provides significant flexibility in control panel design. It allows the redundant chassis to be installed in separate enclosures or different sections of a large control room, mitigating the risk of a single point of physical failure (e.g., fire, water damage, or impact) taking down both the primary and backup controllers simultaneously.
Application Field
The 1756‑RMC10 is exclusively used in ControlLogix Redundancy Systems where continuous process uptime is non‑negotiable. In the oil and gas industry, it links redundant controllers managing pipeline compressor stations or offshore platform safety systems. Within power generation and water/wastewater treatment facilities, it ensures uninterrupted operation of critical pump and filter controls by enabling seamless failover. The cable is also vital in high‑speed manufacturing and pharmaceutical batch processes, where a system halt would result in significant production loss or product scrap. Its immunity to noise makes it particularly valuable in steel mills or mining operations with extreme electrical noise environments.
Related Products
- 1756‑RMC1 / RMC3 / RMC5: Shorter length variants (1m, 3m, 5m) of the same redundancy fiber cable for chassis mounted side‑by‑side.
- 1756‑RM2: The standard ControlLogix Redundancy Module that this cable connects to.
- 1756‑RMXT: The extreme‑temperature version of the redundancy module, also compatible with the 1756‑RMC10.
- 1756‑L7x / 1756‑L8x: ControlLogix controllers (e.g., 1756‑L71, 1756‑L81E) that form the redundant processor pairs synchronized by this cable.
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