Allen-Bradley 1756-RM2 Redundancy Module

Allen-Bradley 1756-RM2 Redundancy Module

Overview

The Allen-Bradley 1756-RM2 is a high-performance redundancy module designed for use with ControlLogix systems. It offers enhanced functionality and high-speed performance, making it an ideal choice for industrial automation applications requiring high reliability and fault tolerance.

Key Features

• Enhanced Functionality: The 1756-RM2 provides enhanced features such as high-speed communication, robust synchronization, and advanced diagnostics.
• High-Speed Performance: With a speed of up to 1000 Mbps, the module ensures rapid data transfer and low latency in controller switching.
• Redundant Fiber Ports: It uses redundant fiber ports for cross-loading, eliminating single points of failure and enhancing system reliability.
• Synchronization: The module maintains synchronization between processing chassis during channel switching, ensuring seamless operation.
• Diagnostics: The 1756-RM2 offers non-intrusive diagnostics, allowing for real-time monitoring and troubleshooting without disrupting system operation.
• Power Consumption: It consumes low power, with a maximum power dissipation of 6W and heat dissipation of 21 BTU/hour.
• Compatibility: The module is compatible with ControlLogix 5560 and 5570 series controllers and can be installed in any slot of a ControlLogix chassis.
• Communication: It supports up to seven enhanced ControlNet and EtherNet/IP communication modules, providing flexible networking options.
• Cabling Options: The 1756-RM2 supports various cabling options, including 1756-RMC1, 1756-RMC3, and 1756-RMC10 cables with lengths of 1m, 3m, and 10m, respectively.

Technical Specifications

• Operating Voltage: The module operates at 5.1V DC (consuming 1.16A current) or 24V DC (consuming 3.4mA current).
• Dimensions and Weight: It weighs 0.64 pounds and has an open-frame design for easy installation.
• Distance Capabilities: The redundant modules can be spaced up to 10 kilometers (10,936.13 yards) apart, though proximity is ideal for optimal performance.

Applications

The Allen-Bradley 1756-RM2 is suitable for a wide range of industrial automation applications, particularly those requiring high reliability and fault tolerance. It is commonly used in critical systems where downtime can result in significant losses, such as in manufacturing, processing, and other industrial sectors.

Conclusion

The Allen-Bradley 1756-RM2 redundancy module is a high-performance, reliable solution for industrial automation systems. With its enhanced functionality, high-speed performance, and robust synchronization capabilities, it ensures seamless operation and high availability of critical systems. Its compatibility with a wide range of ControlLogix controllers and communication modules makes it a versatile choice for various industrial applications.