Allen-Bradley 1757-SRM SER B ControlLogix Redundancy Module

1757-SRM version B is a control logic redundancy module produced by Allen-Bradley. This module is used for process logic and control logic systems. It is paired with 1756-SRM in another control logic chassis to achieve controller redundancy. It is a dual-slot module with an integrated fiber optic port suitable for 62.5/125 micron multimode fiber optic cable with SC connector. The product is marked as CL I, "DIV 2, GP A, B, C, D", and is only suitable for Class I, Zone 2, Group A, B, C, D hazardous locations and non-hazardous locations.

Fuctions & Features

• Dual controller hot standby: Pair two 1757-SRM modules (installed in the main/standby chassis respectively) and pair them with the 1756-SRM in another rack to achieve controller redundancy.

• Dual slot module: 1757-SRM occupies 2 slots of the ControlLogix chassis.

• Fiber port configuration: supports 62.5/125μm multimode fiber (SC interface), with a transmission distance of up to 500 meters (depending on the fiber model).

• Chassis support: Requires 1756-A4/A7/A10/A13/A17 series B chassis.

• Power requirements: Requires 1756-PA72/PA75/PB72/PB75 power modules.

• Matching cables: 1757-SRCxxx series fiber optic cables (such as 1757-SRC1

Specification