Is the Allen-Bradley 1756-RM2 new or used?

We offer the 1756-RM2 in multiple conditions, from unused surplus to professionally reconditioned units. Every option is sourced and verified independently and covered by our 2-year replacement warranty.

What are the key ratings of the 1756-RM2?

The 1756-RM2 operates across 32-140 Fahrenheit (0-60 Celsius).

What is the Allen-Bradley 1756-RM2?

The 1756-RM2 is an Allen-Bradley ControlLogix 1756 Enhanced Redundancy Module.

UPC	884951800434
Brand	Allen-Bradley
Length	10 kilometers
Series	ControlLogix
Channels	1
Connector	LC Type
Enclosure	None
Wire Size	20 AWG
Cable Type	8.5/125 micron single-mode fiber-optic cable
Dimensions	5.51 x 4.41 x 5.71 inches
Wavelength	1310 Newton Meters
Module Type	Enhanced Redundancy Module
Manufacturer	Rockwell Automation
Transmission	1000 MB per Second
Connector Cables	1756-RMC1, 1 m (3.28 ft); 1756-RMC3, 3 m (9.84 ft);1756-RMC10, 10 m (32.81 ft)
Operating Temperature	32-140 Fahrenheit (0-60 Celsius)
Supported Controllers	Logix 5560 /Logix 5570
Part Number/Catalog No.	1756-RM2

Allen-Bradley

1756-RM2

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PLCs ControlLogix 1756

The Allen-Bradley 1756-RM2 is a Rockwell Automation ControlLogix Enhanced Redundancy Module designed for high-performance industrial control systems. It supports Logix 5560 and 5570 controllers, using single-mode fiber-optic cables (1756-RMC1, RMC3, RMC10) for reliable communication with a 10-kilometer range and transmission speeds up to 1000 Mbps. Compact at 5.51" x 4.41" x 5.71", it operates between 32-140°F.

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Overview of the Allen-Bradley 1756-RM2

The Allen-Bradley 1756-RM2 is a redundancy module designed to be used with ControlLogix systems, which are part of Rockwell Automation's larger suite of industrial automation solutions. The purpose of the 1756-RM2 module is to provide high availability and fault tolerance for critical control applications. It does so by enabling a pair of ControlLogix controllers to be configured in a redundant setup, ensuring continuous operation even if one controller fails.

Key Features of the 1756-RM2

One of the key features of the 1756-RM2 redundancy module is its support for seamless switchover, which allows the backup controller to take over automatically with no loss of process continuity in the event of a primary controller failure. Additionally, the module supports enhanced diagnostics and monitoring capabilities, making it easier to predict failures and perform preventive maintenance. The 1756-RM2 also enables online changes to be made without affecting the system's operational status, which minimizes downtime.

Installation and Compatibility

The 1756-RM2 module is installed into the ControlLogix chassis alongside the main controller modules. It requires a compatible ControlLogix firmware and chassis to operate. Moreover, the redundancy module must be used in conjunction with a 1756-RM ControlLogix redundancy firmware kit, which coordinates the functions of the primary and secondary controllers. The module's design ensures a streamlined implementation, geared towards existing ControlLogix installations that require high availability features.

Network and Communication

Communication plays a vital role in the operation of the Allen-Bradley 1756-RM2 redundancy module. It employs a dedicated redundancy communication link that connects the two controllers, ensuring rapid synchronization and controller status updates. This dedicated link is essential for the fault-tolerant operations, as it supports real-time data exchange between the controllers to maintain a synchronized state and perform fast failover if necessary.

Software and Configuration

Setting up and configuring the Allen-Bradley 1756-RM2 redundancy module requires the use of Rockwell Software's RSLogix 5000 or Studio 5000 Logix Designer. These software tools offer an intuitive interface and comprehensive toolset for configuring the redundancy setup, defining parameters, and managing the behavior of the redundant system. The software functionality includes setting up control strategies, synchronization policies, and monitoring system health and status for efficient maintenance and troubleshooting.