High Quality In Stock 1757-SRM
Description
The Allen-Bradley 1757-SRM is a ProcessLogix and ControlLogix System Redundancy Module. This module enables Controller Redundancy by pairing with another 1756-SRM from another ControlLogix chassis. This module is a Two (2) slot module with integrated Fiber Optic port compatible for 62.5/125 micron multi-mode fiber-optic cable with SC connector.
You can use an external switchbox connected to a user relay on the 1757-SRM series B module to determine which Logix controller you will attach to the other RS232 devices on the serial link. You must assemble an external switchbox to direct serial port devices to one controller of a pair of redundant Logix controllers. Rockwell Automation does not supply the external switchbox with the modules. This example illustrates a connection scheme, with one single-pole double-throw switch for each RS232 signal. The external power supply output should not exceed the ratings of the external switchbox coil.
Allen Bradley Main Products:
1746-IB16
1785-L20B
1747-L531
1746-IB32
1771-OFE2
1756-DNB
1746-OW16
1771-IR
1756-OF8
1747-L532
1771-IR/D
1746-NI16I
1756-IF16
1771-OW16
1746-IB16
1747-L541
1771-OMD B
1746-IB32
1785-KA
1771-ASB/E
1746-OW16
2711-T10C15
1771-IFE
1747-L532
2711-T10C20
1771-P7/C
1756-IF16
1756-CNBR
1756-IB32
1747-L541
1757-SRM
1756-PA75
1785-KA
2711-NC13
1756-OBI6E
2711-T10C15
1756-EN2T
1756-OB16I
1756-PA75
1746-NI4
1756-IB16I
1756-OBI6E
1756-BA2
1746-OW8/A
1756-OB16I
1771-IMD/B
1746-OB16/D
1756-IB16I
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