Unbalance

What does 18 mean?

This is a warning indicating an unbalance condition between power modules in paralleled drive units. Subcode S1 signifies current unbalance, while S2 indicates DC-Voltage unbalance, pointing to an uneven load or voltage distribution across the parallel modules.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the warning re-occurs, further investigation of the power module health and interconnections is required.