1757-SRM Allen Bradley ControlLogix System Redundancy Module

Product Description

The Allen Bradley 1757-SRM serves as the primary 1757-SRM System Redundancy Module utilized to execute controller redundancy pairing across ControlLogix and ProcessLogix platforms.

Hardware Specifications

Profinet / EtherNet/IP Deterministic Networks & Backplane Communication

Operating within high-availability industrial architectures, the module executes backplane bus communication velocity data exchanges to maintain synchronized state data between primary and secondary controllers. Through deterministic network connections, it processes fiber-optic telemetry at 1300 nm wavelengths over multi-mode media, successfully suppressing communication jitter during failover transitions. Firmware flash compatibility ensures seamless integration with Logix 5560 controllers, while backplane current drawing is continuously managed to prevent power rail overload within the ControlLogix chassis. Furthermore, thermal dissipation parameters remain strictly within specified limits, radiating a maximum of 38.49 BTU/hr to protect adjacent I/O modules from localized overheating.

Frequently Asked Questions

Q: What is the slot width requirement for the 1757-SRM module in a ControlLogix chassis?

A: The module requires exactly two adjacent slots within a standard ControlLogix chassis to house its dual-slot physical footprint and optical interface components.

Q: Can the 1757-SRM be hot-swapped during active process execution?

A: Removing or inserting this system redundancy module under power can disrupt the redundant controller synchronization link; therefore, standard engineering practice dictates powering down the chassis or following specific system redundancy decoupling procedures prior to hardware replacement.

Q: What type of fiber-optic cables and connectors are compatible with the module?

A: The integrated optical port requires a 62.5/125-micron multi-mode fiber-optic cable terminated with an SC type connector, utilizing matching connector cables such as the 1757-SRC series.

Field Installation Guidelines

• Mount the module securely into any two adjacent slots of a standard ControlLogix chassis, ensuring proper backplane pin alignment.
• Connect the 62.5/125-micron multi-mode fiber-optic cable using the SC connector, verifying that the transmit and receive strands match the corresponding ports on the paired remote chassis module.
• Maintain ambient operating temperatures between 0 deg C and 60 deg C, and allow adequate vertical spacing above and below the chassis for unimpeded natural convection cooling.

Other Attributes

• Series: Allen-Bradley ControlLogix
• Country of Origin:  USA
• Lead Time: In Stock, 2 Working Days

In Stock Hot Items of Allen Bradley

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