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What is the difference between nPr and CoS on the ATV320 drive?
Issue:
Differences between nPr and CoS on the ATV320 drive.

Product Line:
Altivar 320

Environment:
All

Cause:
Configuration

Resolution:
nPr: This is the rated motor power.  This should be set to the motor horsepower given on the name plate.

CoS: This is the motor 1 cosinus phi value or more commonly known as motor power factory (PF).  This has a range of .5 to 1.  The motor nameplate may be designated PF or COS.

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