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Home›Repair guides›Cummins/Onan›Voltage Setpoint Adjustment

Cummins/Onan — Voltage Setpoint Adjustment

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. Connect to the control with your PC based service tool.
  2. Verify the nominal voltage trim is set to the desired value.
  3. With the genset OFF, attach a calibrated Voltmeter to the AC Output from L1 to L2.
  4. Start the genset and allow it to reach normal operating speed.
  5. Adjust the trim Voltage Adjust to move the voltage Setpoint either positive or negative per your requirement.

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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