260 Rockwell Automation Publication 520-UM001I-EN-E - July 2016
Appendix J PowerFlex 525 PM Motor Configuration
Static Tune
This test is used when the motor is connected to a high friction load and cannot
easily be uncoupled from the motor, or when the load cannot be rotated due to
mechanical constraints or a limited range of movement. The Static Tune test does
not generate any motor movement. The Static tune test results may not be as
accurate as the Rotate Tune test.
Rotate Tune (preferred for PM motor tuning)
This test is used when the motor is not coupled to the load or the load is low
friction. Rotate tune is generally used to better identify motor flux and stator
electrical properties, which are used to automatically tune the torque current
loop. The Rotate Tune test causes motor rotation at different speeds while it is
executing.
After completing the configuration and running the Auto Tune test, you may
need to perform additional configuration depending on whether you have an
open loop or closed loop system.
For an open loop system (A535 [Motor Fdbk Type] = 0 “None”), you may need
to adjust two parameters if you encounter momentary reverse startup after a Start
command is issued.
For a closed loop system (A535 [Motor Fdbk Type] = 4 “Quadrature” or
5 “Quad Check”, you must perform an angle alignment after the Auto Tune test
before running the motor normally.
See Additional PM Motor Configuration
on page 262 for instructions.
ATTENTION: If the drive was never operated before (new installation), verify
that safeguards are in place to remove power safely from the drive during an
unstable situation where the drive can produce undesired motion.
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