14 ProcessLogix and ControlLogix System Redundancy Module
Publication
1757-IN092E-EN-P - November 2007
Wire to the Separable Terminal Block Connector
If you are using your 1757-SRM modules with the user relay, you need to wire
to the separable block connector and plug it into the relay’s terminal.
1. Before attaching the separable terminal block connector to the wiring,
feed the wire through a ferrite core, keeping the ferrite core as close to
the end of the insulation of the wire as possible.
Use the ferrite core manufactured by Steward (part number
28A2029-0A0).
2. Connect the optional field wiring to the separable terminal block
connector and plug it into the user relay terminal.
Refer to Using the 1757-SRM Module Relay Terminals on page 15 for
more information on terminal designations.
WARNING
If you connect or disconnect wiring while the field-side
power is on, an electrical arc can occur. This could cause an
explosion in hazardous location installations. Be sure that
power is removed or the area is nonhazardous before
proceeding.
Ferrite Core
User Relay
Terminal
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