20 Rockwell Automation Publication 1769-IN028I-EN-P - July 2020
Compact I/O Expansion Power Supplies
Connect Field Wires
The following instructions explain how to wire your power supply.
Ground the Power Supply
Wire the Power Supply
Connect the ground screw of the power supply to the nearest ground or ground bus.
Use a 2.5 mm (14 AWG) wire and keep the leads as short as possible.
ATTENTION: This product is intended to be mounted to a well-grounded mounting surface such
as a metal panel. Additional grounding connections from the power supply's mounting tabs or DIN
rail (if used) are not required unless the mounting surface cannot be grounded. Refer to Industrial
Automation Wiring and Grounding Guidelines, Allen-Bradley publication 1770-4.1
, for additional
information.
ATTENTION: This symbol denotes protective earth ground and earth ground terminals that
provide a low impedance path between electrical circuits and earth for safety purposes and
provides noise immunity improvements. You must make these connections for safety purposes.
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