Cummins/Onan — Operating PowerCommand in Droop Mode
Adjustments · PowerCommand Control
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan DGBB, Cummins/Onan DGBC, Cummins/Onan DGCA, Cummins/Onan DGCC, Cummins/Onan DGDA, Cummins/Onan DGDB, Cummins/Onan DGEA, Cummins/Onan DGFA, Cummins/Onan DGFC
Procedure
- Set the no load speed and voltage at the desired level (bus must be de-energized or disconnect Bus PT module).
- Apply 100% load and adjust KW load sharing gain for desired full load frequency; adjust KVAR load sharing gain for desired full load voltage.
- Repeat the process for other generator sets in the system.
- Test the system with all available load and verify approximately equal load sharing at no load and maximum load.
Specs & values
- Connect a 5K resistor across A40-TB1-54 and 55 (KVAR) to cause voltage droop.
- Connect a 5K resistor across A40-TB1-56 and 57 (KW) to cause frequency droop.
Full service-parts list: Cummins/Onan DGBB →, Cummins/Onan DGBC →, Cummins/Onan DGCA →, Cummins/Onan DGCC →, Cummins/Onan DGDA →, Cummins/Onan DGDB →, Cummins/Onan DGEA →, Cummins/Onan DGFA →, Cummins/Onan DGFC →
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.