Siemens SINAMICS G150 Operating Instructions Manual page 425

In addition to the equivalent circuit diagram data, motor data identification (p1910 = 3) can
be used for induction motors to determine the magnetization characteristic of the motor. Due
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
In comparison with standstill measurement (p1910) for induction motors, rotating
measurement (p1960) allows the rated magnetization current and saturation characteristic to
be determined more accurately.
Figure 9-2
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
● r0047 displays the current status of the measurement.
Note
To set the new controller setting permanently, the data must be saved with p0977 or p0971
in a non-volatile memory.
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A
Magnetization characteristic
fault F07990 is output.
Functions, Monitoring, and Protective Functions
9.2 Drive Functions
423