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Cummins/Onan — Current Measurement for Display

Adjustments · PCC1302 control

From a Cummins/Onan service manual covering: 1302 series control, HMI211, HMI211RS, PCC 1302. Check it applies to your exact model before use.

Applies to: Cummins/Onan PCC 1302

Procedure

  1. Apply a load to the genset and monitor the current with a calibrated current meter.
  2. Connect to the control with your PC based service tool.
  3. Verify the CT ratio settings and power ratings are correct for your application.
  4. Adjust the LX 50Hz Current Adjust or LX 60Hz Current Adjust trim so the control measured current matches the current read by the known current meter. Each of the three lines is adjusted independently.
  5. Save the adjustments by doing a save trims with your PC based service tool.

Tools required

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Full service-parts list: Cummins/Onan PCC 1302 →

Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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