User manual

76 Rockwell Automation Publication MOTION-UM003F-EN-P - March 2015
Chapter 2 Configure Integrated Motion Using a PowerFlex 755 Drive
If you are using a motor that is not in the database, the default is Not
Aligned. If the motor is in the database, the alignment is set to Controller
Offset.
4. Go online with the controller and click Test Commutation.
When the test is complete, you see the status of the polarity.
See the Integrated Motion on the EtherNet/IP Network Reference Manual,
publication MOTION-RM003
, for complete descriptions of the axis attributes.
Type Description
Not Aligned Not Aligned indicates that the motor is not aligned, and that the
Commutation Offset value is not valid. If the Commutation Offset is not valid,
the drive cannot use the value to determine the commutation angle. Any
attempt to enable the drive with an invalid commutation angle results in a
Start Inhibit condition.
Controller Offset It applies the Commutation Offset value from the controller to determine the
electrical angle of the motor.
Motor Offset The drive derives the commutation that is offset directly from the motor.
Self-Sense The drive automatically measures the commutation that is offset when it
transitions to the Starting state for the first time after a power cycle. This
generally applies to a PM motor equipped with a simple incremental
feedback device.