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What is an incompatible PB (INF2) error on an ATV320 Drive?

Issue:
Incompatible PB (INF2) error on an ATV320

Product Line:
Altivar 320

Environment:
All

Cause:
The power card is incompatible with control block

Resolution:
Check the reference of the power card and its compatablity.
Replace VFD if needed.