Rockwell Automation 22D PowerFlex 40P User Manual, FRN 3 User Manual
Page 122
4-8
Troubleshooting
Motor and/or drive will not accelerate to commanded speed.
Cause(s)
Indication
Corrective Action
Acceleration time is excessive. None
Reprogram
[Accel Time 1] or
[Accel Time 2].
Excess load or short
acceleration times force the
drive into current limit, slowing
or stopping acceleration.
None
Compare
[Output Current] with
[Current Limit 1].
Remove excess load or reprogram
[Accel
Time 2].
Check for improper
[Boost
Select] setting.
Speed command source or
value is not as expected.
None
[Commanded Freq].
Check
[Control Source] for the
proper Speed Command.
Programming is preventing the
drive output from exceeding
limiting values.
None
Check
[Maximum Freq] to
insure that speed is not limited by
programming.
Verify programming of
[Speed
Ratio].
Torque performance does not
match motor characteristics.
None
Set motor nameplate full load amps
in parameter
[Motor NP FLA].
Perform
[Autotune] “Static
Tune” or “Rotate Tune” procedure.
Set
[Torque Perf Mode] to
option 0 “V/Hz”.