Rockwell Automation Publication 520-UM001I-EN-E - July 2016 259
PowerFlex 525 PM Motor Configuration Appendix J
Auto Tune
Ensure the load is uncoupled and perform a Rotate Tune test.
The Auto Tune is used to identify the correct motor flux and stator electrical
properties, including the following:
• IR volt drop, which is voltage drop over resistance.
• IXd volt drop, which is voltage drop over inductance.
• Flux current (estimated in Static Tune and measured in Rotate Tune test).
• Slip RPM, which is calculated from motor nameplate data. If an encoder is
used, the Slip RPM becomes a measured value using the encoder.
Auto Tune Window
A properly tested motor and drive helps ensure higher starting torque and better
performance at low speeds. Conversely, an improperly performed Auto Tune can
cause the motor to exhibit instability at low speeds, uneven performances when
running through the motor speed range, and can generate unnecessary faults such
as overcurrent and overvoltage faults.
To Next Page
Loading...
Need help?
General
