What can cause an ASF or angle error on the ATV630 and ATV930 Process drives?

Issue:
Posible cause for an ASF or angle error on the ATV630/930 drives.

Product Line:
ATV630 and ATV930 Process drives

Environment:
All

Cause:
For synchronous motors , the wrong speed loop setting when the reference goes to zero.

Resolution:
Verify the speed loop parameters
Verify the motor phases and the maximum current allowed by the drive.

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