Rockwell Automation PowerFlex series User Manual page 71

1. Set the speed reference to "0" (zero) using the assigned source
(HIM or analog potentiometer). Refer to
page C-13 for more information on speed reference sources.
2. View Par 385 [Speed Ref Out] and verify that the value is "0".
3. Press the Start button on the HIM and slowly increase the speed
reference until full speed is reached (viewed in Par 385 [Speed Ref
Out] ).
4. If using a four quadrant (regenerative) drive, press the Direction
button on the HIM and verify that the motor ramps down to "0"
speed and then to full speed in the opposite direction.
5. Press the Stop button on the HIM and verify that the drive ramps to
"0" speed and stops.
Auto Tuning Faults
Following is a list of faults that may display during the speed regulator
auto tuning test. In some cases, the drive's control circuits may detect a
value(s) that is out of range for the configuration settings during the
speed regulator auto tuning test. In these cases, make the suggested
adjustments and repeat the test. If the fault occurs again, complete the
Fine Tuning the Regulators
Fault No. Description
STune 56 The measured motor speed is
Overspeed too high during the speed
regulator auto tuning procedure.
STune Stalled 57 The drive stalled during the
speed regulator auto tuning
procedure.
STune LoadHi 58 The loading torque value is too
high at zero speed to complete
the speed regulator auto tuning
procedure.
STune CurLimit 59 The value of Par 1048 [Autotune
Cur Lim] for auto tuning the
speed regulator is set too high.
STune FrictionLo 60 The friction value attained during
the auto tuning procedure is zero
or lower than the control
precision limit.
STune Timeout 61 The speed regulator auto tuning
procedure did not complete
within the available time.
STune Aborted 62 The speed regulator auto tuning
procedure has been stopped by
the user.
Reference Control on
procedures beginning on
Action
Decrease the value of Par 1048
[Autotune Cur Lim] and repeat the
auto tune procedure.
Increase the value of Par 1048
[Autotune Cur Lim] and repeat the
auto tune procedure.
Decrease the load torque, where
applicable, and repeat the auto
tune procedure.
Decrease the value of Par 1048
[Autotune Cur Lim] and repeat the
auto tune procedure.
Decrease the value of Par 1048
[Autotune Cur Lim] and repeat the
auto tune procedure.
Verify the value in Par 1048
[Autotune Cur Lim]. If this value is
set to low, the motor will not be
able to reach a maximum speed of
33% of the lower of the values in
Par 45 [Max Ref Speed] or Par 3
[Max Speed Fwd] or Par 4 [Max
Speed Rev] and not be able to
complete the test. Set these values
appropriately and repeat the auto
tuning procedure.
Informational only.
PowerFlex Digital DC Drive User Manual -
Drive Start Up 2-17
page C-25.
Publication 20P-UM001C-EN-P - July 2008