Siemens SINAMICS S150 NEMA, Operating Instructions Manual, Page: 510 / 862

Functions, monitoring and protective functions
9.3 Drive functions
Enclosed Drives
508
Operating Instructions, 12/2018, A5E36652151A
to the higher accuracy, the magnetization characteristic should, if possible, be determined
during rotating measurement (without encoder: p1960 = 1, 3; with encoder: p1960 = 2, 4).
If the drive is operated in the field-weakening range, this characteristic should be determined
for vector control in particular. The magnetization characteristic can be used to calculate the
field-generating current in the field-weakening range more accurately, thereby increasing
torque accuracy.
Note
Results of the rotating measurement
In comparison with standstill measurement (p1910) for induction motors, rotating measure-
ment (p1960) allows the rated magnetization current and saturation characteristic to be
determined more accurately.
Figure 9-2 Magnetization characteristic
Carrying out motor identification
● Enter p1910 > 0. Alarm A07991 is displayed.
● Identification starts when the motor is switched on.
● p1910 resets itself to "0" (successful identification) or
fault F07990 is output.
● r0047 displays the current status of the measurement.
Note
Non-volatile saving
To set the new controller setting permanently, the data must be saved with p0977 or p0971
in a non-volatile memory.