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Adjusting the Trip Point on the ECM Current Switch: a Quick Step-by-Step Tutorial

Posted: 3/15/24

Adjusting the trip point of ACI's new ECMCS25-A current switch is a bit different than other current switches. In this guide, we'll walk you through the calibration process step by step, ensuring your ECM motor status indication is spot on.

Calibration Steps:

  1. Power Up in Standby Mode: Start by turning on the ECM motor but keeping it in the "standby" position – powered but not turning.

  2. Clockwise Adjustment: Rotate the screw clockwise slowly to lower the trip point until the light on the TRIP ADJUST TOOL turns on.
  3. Counter-Clockwise Fine-Tuning: Turn the screw very slowly counter-clockwise until the light on the TRIP ADJUST TOOL turns off.
  4. Verification: Confirm the trip point by activating the ECM motor and returning it to standby mode. The light on the TRIP ADJUST TOOL should be ON during motor operation and OFF during standby.

Additional Insights:

  • Power Source: ECMCS switches don't require external power; they draw power from the monitored conductor.
  • Factory Settings: The switch ships with a factory-set maximum trip level.
  • Calibration Conditions: ACI recommends calibrating the switch with the ECM motor in standby mode.
  • Trip Adjust Tool: The TRIP ADJUST TOOL is very helpful, but not required to configure the trip point of the ECMCS. You can also use a voltage meter or your controller. 

By following these steps, you can ensure that your ECMCS25-A current switch is precisely calibrated to your ECM motor's status. For any further assistance or questions, feel free to reach out to our expert team. Happy calibrating!

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