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P051 = 28
At the end of the optimization run, P051 is displayed on the operator panel and the drive switches to
8.5
operating state o7.2.
NOTE
In the case of motors 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 data set 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.
Siemens Energy & Automation
SIMOREG DC Master Base Drive Panel 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 motor 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.
8-15
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