PowerFlex Digital DC Drive User Manual - Publication 20P-UM001C-EN-P - July 2008
2-16 Drive Start Up
3. Press the Start button on the HIM. This will start the speed regulator
auto tuning test, which could take several minutes. When the test
has been completed, the drive will automatically stop.
During the test the following are completed:
❏ An acceleration test, with the torque limit value set in the Par
1048 [Autotune Cur Lim].
❏ A deceleration test, with a lower torque limit value applied,
until zero speed has been reached.
❏ Par 1013 [Torque Const] is calculated and updated based on the
entered motor data.
The test threshold speed is 33% of the lowest value set in the
following Pars:
❏ 45 [Max Ref Speed]
❏ 3 [Max Speed Fwd] or 4 [Max Speed Rev] based on the rotation
direction chosen in Par 1029 [Speed Tune Dir]
The drive will determine the speed loop gains (Pars 87 [Spd Reg Kp]
and 88 [Spd Reg Ki]) based on the motor and load inertia and friction
characteristics.
If any fault occur during the test, refer to Auto Tuning Faults on
page 2-17 for a description and more information.
Note: If any manual adjustments are required (due to vibrations,
etc.), these should be carried out according to the value of
the integral gain Par 88 [Spd Reg Ki]. If the speed regulator
auto tuning test does not provide satisfactory results, refer
to Fine Tuning the Regulators on page C-25
.
The values determined by the Speed Regulator tuning tests are updated
in Pars 87 [Spd Reg Kp], 88 [Spd Reg Ki], 1014 [Inertia] and 1015
[Friction] and displayed in the corresponding Pars 1032 [Speed Tune
Kp], 1033 [Speed Tune Ki], 1030 [Spd Tune Inertia] and 1031
[SpdTune Friction], respectively. The values of Pars 1030 - 1033 can be
used as a record of the Speed Regulator auto tuning results if the values
of Pars 87, 88, 1014 and 1015 are subsequently changed.
12. Verify Speed Reference Settings and Drive Operation:
Verify the following speed and direction (for four quadrant drives)
references of the drive under a load.
!
ATTENTION: This test requires the free rotation of the
motor shaft combined with the load. All of the steps in
the “Drive Start Up” procedure must have been
completed before completing this step.
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