Allen Bradley/Rockwell 1756-RM2 ControlLogix Redundancy Enhanced Module

Product Description

The Allen-Bradley 1756-RM2 is a ControlLogix Redundancy Module. It has enhanced features with speeds of up to 1000 Mbps. When paired with 1756-L7x controllers in both chassis, it gives the best scan performance. For cross loading, the 1756-RM2 uses redundant fiber ports with no single point of failure. During channel switchover, the processing chassis remains synched while the scan time may encounter a delay of around 10 ms. It has enhanced safety features with interference-free diagnostics.

The 1756-RM2 is a ControlLogix Enhanced Redundancy Module manufactured by Allen Bradley. The 1756-RM2 features an enhanced speed with a performance of 1000 Megabytes per Second. Paired with 1756-L7 x controllers in both chassis, the 1756-RM2 gives best scan performance and for cross loading the 1756-RM2 uses redundant fiber ports ensuring no single point of failure. While on channel switchover, the processing chassis is usually synched while scan time might encounter delay of up to 10 Milliseconds. The 1756-RM2 comes with enhanced safety features making it interference free. The 1756-RM2 is a redundancy module that draws a 1.16 Amps current running at 5.1 Volts DC and 3.4 mA at 24 Volts DC. The maximum power dissipation for the 1756-RM2 is 6 Watts with a thermal dissipation of 21 BTU per hour and it is usually installed on any slot location on the chassis. The shipping weight for the 1756-RM2 is 0.64 pounds and the shipping dimensions for the 1756-RM2 includes 5.51 x 4.41 x 5.71 inches. The module comes with an open enclosure. For communication, the 1756-RM2 features seven enhanced ControlNet and EtherNet/IP communication modules. When it comes to wiring, the 1756-RM2 functions effectively with the 1756-RMC1, the 1756-RMC3, and the 1756-RMC10 cables with 1 meter, 3 meter, and 10 meter lengths respectively.

Q1: Can the 1756-RM2 be used in non-redundant systems?

A1: No, the 1756-RM2 is specifically designed for redundant ControlLogix systems to manage primary and secondary controller synchronization.

Q2: What firmware version is required for the 1756-RM2?

A2: The firmware version of the 1756-RM2 must match the redundancy system firmware for compatibility and optimal performance.

Q3: Is it compatible with legacy ControlLogix controllers?

A3: Compatibility depends on the firmware version and system requirements. Refer to the product manual for detailed compatibility information.

Q4: How can I monitor the status of the redundancy module?

A4: Status LEDs on the module provide visual indicators, and the system diagnostics in RSLogix 5000 or Studio 5000 software offer detailed monitoring options.

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