Siemens SIMOREG DC Master 6RA7028-6DS22 Operating Instructions Manual page 157

02.00
P051 = 28
At the end of the optimization run, P051 is displayed on the operator panel and the drive
8.5
switches to operating state o7.2.
NOTE
In the case of drives with a limited travel path, the optimization run for field weakening (P051=27)
may not be interrupted by the SHUTDOWN command until the 1st field weakening measuring
point has been plotted. Likewise, the optimization run for the friction moment and moment of
inertia compensation function (P051=28) may not be interrupted by SHUTDOWN until the
measuring point at 10% of maximum speed has been determined. Premature interruption in both
cases will lead to activation of fault message F052. When either of these optimization runs is
restarted (P051=27 or P051=28), it will be continued at a more advanced position. In this way, the
respective run can be completed in several stages, even if the travel path is limited.
Note:
The respective optimization run is executed completely after a restart if a) a fault message is
activated during the optimization run, b) if the electronics supply is disconnected before the
relevant optimization run is restarted, c) if another function dataset than the one before is selected
or d) if another optimization run is started in-between.
The parameters of the function data set selected in each case are optimized.
While optimization runs are being executed, the function data set selection must not be changed
or else a fault message will be activated.
NOTE
Optimization runs should be executed in the order listed above (precontrol and current controller,
speed controller, field weakening control, friction moment and moment of inertial compensation).
The determined parameters are dependent on the motor temperature. Values set automatically
when the motor is cold can be used as effective defaults.
For highly dynamic drives, the optimization run P051=25 should be repeated after the drive has
been operated under load (i.e. when motor is warm).
SIEMENS AG 6RX1700-0AD76
SIMOREG DC Master Operating Instructions
Optimization run for compensation of friction moment
and moment of inertia (if desired) (process lasts approx. 40s)
The following parameters are set automatically: P520 to P530, P540
WARNING
The drive accelerates up to maximum speed during this optimization
run.
On completion of this run, the friction and inertia moment compensation function
must be activated manually by setting P223=1.
When the operating mode is switched from current control to torque control with
P170, the optimization run for friction and inertia moment compensation must be
repeated.
Note:
The speed controller may not be parameterized as a pure P controller or as a
controller with droop when this optimization run is executed.
Start-Up
7-15