454 Rockwell Automation Publication 750-PM001N-EN-P - February 2017
Appendix C Application Notes
Rotate Tune
During a Rotate Tune routine, the motor runs for 20 seconds in the commanded
direction. The Rotate Tune routine must be executed in a no load or lightly
loaded condition such as the motor connected to a gearbox, cable drum, or cable
and hook.
If the motor is connected to a load, determine whether there is enough travel
distance for the Rotate Tune sequence to complete. If necessary, run the crane
hook to top or bottom for more travel distance in the opposite direction.
If the Rotate Tune routine fails due to motor load, rerun the Static Tune routine
and skip this routine.
1. Enter Rotate Tune parameter settings.
2. Press the Start button on the Control Bar.
When the Rotate Tune routine is complete, P70 [Autotune] changes to 0
“Ready.”
Check tuning results in P73 [IR Voltage Drop], P74 Ixo Voltage Drop],
and P75 [Flux Current Ref ].
Ensure that the Rotate Tune routine can be stopped if an end travel condition is
likely to occur.
Drive Parameter Setting
P70 [Autotune] 3 “Rotate Tune”
P520 [Max Fwd Speed] Forward speed limit that is used during Autotune.
70 % P27 [Motor NP Hertz] minimum.
P521 [Max Rev Speed] Reverse speed limit that is used during Autotune.
70 % P27 [Motor NP Hertz] minimum.
Encoder Module Parameter (Port X) Setting
P10 [RO0 Sel] Port 0, P935 [Drive Status 1], Bit 1 “Active”
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