Allen-Bradley 1756-RM2

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Allen-Bradley 1756-RM2 | ControlLogix Redundancy Module – Single Channel Fiber, SIL2 Certified

Overview

The Allen-Bradley 1756-RM2 is a redundancy communication module for ControlLogix systems, supporting SIL2-rated safety applications and providing high-speed synchronization between redundant controllers. It includes a single-channel fiber optic interface with 1 transmit and 1 receive port, handling distances up to 10 km and speeds up to 1000 Mbps.

Perfect for high-availability systems, the 1756-RM2 is essential for applications that need controller redundancy, fast failover, and fault-tolerant design in process, energy, and infrastructure automation.

Key Features

Function: Redundancy synchronization module
Communication Type: Single-channel fiber (1 TX / 1 RX)
Max Distance: Up to 10 km
Max Speed: Up to 1000 Mbps
Safety Certification: SIL2 (Safety Integrity Level 2)
Compatibility: ControlLogix redundancy systems
High-Speed Sync – Minimizes switchover time
Diagnostic LEDs – Clear status and fault indication

Technical Specifications

Model: 1756-RM2
Fiber Ports: 1 transmit / 1 receive (LC connectors)
Data Rate: Up to 1 Gbps
Fiber Type: Single-mode (for 10 km range)
Safety Rating: SIL2, per IEC 61508
Mounting: ControlLogix chassis
Operating Temp: 0°C to +60°C
Backplane Current (5.1V): ~1.2 A
Certifications: UL, CE, c-UL, SIL2

Applications

Redundant Control Systems – Zero downtime operations
SIL2 Safety Applications – In process automation and infrastructure
Energy & Utilities – Power generation, water treatment, oil & gas
Mission-Critical Automation – High-availability system architectures

Why Choose the 1756-RM2?

Supports fiber redundancy up to 10 km
Enables high-speed controller synchronization
Certified for SIL2 functional safety applications

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Available and ships worldwide. Inquire about redundancy controller kits, fiber cables, or ControlLogix SIL2-certified configurations.

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