What can cause the analog output not to match the actual value on the Altivar drive when the analog output is set to motor frequency?


20 October 2022

The actual value does not match the analog output of the drive.

Product Line:
Altivar Machines

All models and serial numbers

The most common cause is that the maximum frequency (tFr) is not set the same as the high speed (HSP) setting.

The analog output is based off of the maximum frequency setting.  The default maximum frequency is set at 20% above the standard motor frequency (bFr).  If the bFr is 60 the tFr is 72.  Changing tFr will cause the analog output to match the actual value.