Rockwell Automation 22D PowerFlex 40P User Manual, FRN 3 - 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 P039 [Accel Time 1] or
A067 [Accel Time 2].
Excess load or short
acceleration times force the
drive into current limit, slowing
or stopping acceleration. None Compare b003 [Output Current] with
A089 [Current Limit 1].
Remove excess load or reprogram
P039 [Accel Time 1] or A067 [Accel
Time 2].
Check for improper
A084 [Boost
Select] setting.
Speed command source or
value is not as expected. None Verify b002 [Commanded Freq].
Check b012 [Control Source] for the
proper Speed Command.
Programming is preventing the
drive output from exceeding
limiting values. None Check P035 [Maximum Freq] to
insure that speed is not limited by
programming.
Verify programming of
E215 [Speed
Ratio].
Torque performance does not
match motor characteristics. None Set motor nameplate full load amps
in parameter
A126 [Motor NP FLA].
Perform A127 [Autotune] “Static
Tune” or “Rotate Tune” procedure.
Set
A125 [Torque Perf Mode] to
option 0 “V/Hz”.