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Grounding the Expansion Module for CompactRIO

    Last Modified: May 15, 2018

    You must connect the Expansion Module for CompactRIO grounding terminal to the grounding electrode system of the facility.


    For more information about ground connections, visit and enter the Info Code emcground.

    What to Use

    • Ring lug
    • Wire, 1.3 mm2 (16 AWG) or larger
    • Screwdriver, Phillips #2

    What to Do

    Complete the following steps to ground the Expansion Module for CompactRIO.

    Figure 1. Mounting the Module on a DIN Rail
    1. Attach the ring lug to the wire.
    2. Remove the grounding screw from the grounding terminal on the bottom of the module.
    3. Fasten the ring lug to the grounding terminal.
    4. Tighten the grounding screw to 0.5 N · m (4.4 lb · in.) of torque.
    5. Attach the other end of the wire to the chassis safety ground using a method that is appropriate for your application.

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