Siemens 6RA70 specifications Operating Instructions

P051 = 28 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.

8.5At the end of the optimization run, P051 is displayed on the operator panel and the drive switches to 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	8-15
SIMOREG DC Master Base Drive Panel	Operating Instructions