Cause : PAR HZRPM comes when the drive has detected a conflict within its programmed settings. There are several parameters within the drive that define its operation, such as motor speed limits, acceleration/deceleration rates, and control logic.

The F1000 alarm code on your ABB ACS550 drive indicates a parameter inconsistency. This means the drive has detected a conflict within its programmed settings.

Check for any of the following:

1. 2001 MINIMUM SPEED > 2002 MAXIMUM SPEED .
2. 2007 MINIMUM FREQ > 2008 MAXIMUM FREQ.
3. 2001 MINIMUM SPEED / 9908 MOTOR NOM SPEED is outside proper range (> 50).
4. 2002 MAXIMUM SPEED / 9908 MOTOR NOM SPEED is outside proper range (> 50).
5. 2007 MINIMUM FREQ / 9907 MOTOR NOM FREQ is outside proper range (> 50).
6. 2008 MAXIMUM FREQ / 9907 MOTOR NOM FREQ is outside proper range (> 50).