Siemens SINAMICS S120 Function Manual page 249

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The inductance value is then subtracted from the total measured value of the leakage. With

sine-wave filters, only the stator resistance, valve threshold voltage, and valve interlocking time

are measured.

With diffusion of more than 35% to 40% of the motor nominal impedance, the dynamic

response of the speed and current control is restricted to the area of the voltage limit and to field

weakening mode.

The standstill measurement must be carried out when the motor is cold. In p0625, enter the

estimated motor ambient temperature during the measurement (for PT1000 or KTY sensor: Set

p0600, p0601 and read r0035). This is the reference point for the thermal motor model and

The rated magnetization current and the magnetization characteristic should, if possible, be

determined during the rotating measurement (p1900 = 3) (without encoder: p1960 = 1; with

encoder: p1960 = 2). The magnetization characteristic can be used to calculate the field-

generating current in the field-weakening range more accurately, thereby increasing torque

In comparison with standstill measurement (p1910) for induction motors, rotating

measurement (p1960) allows the rated magnetizing current and saturation characteristic to be

determined much more accurately.

Drive functions

Function Manual, 06/2019, 6SL3097-5AB00-0BP2

Magnetization characteristic

6.13 Motor data identification and rotating measurement

Vector control