Siemens SINAMICS S120 Function Manual page 248

Vector control
6.13 Motor data identification and rotating measurement
Determined data for p1910 = 1
Magnetizing inductance (p0360)
Drive converter valve threshold voltage
(p1825)
Converter valve interlocking times
(p1828 ... p1830)
Since the rating plate data contains the initialization values for identification, you must ensure
that it is entered correctly and consistently (taking into account the connection type (star/delta))
so that the above data can be determined.
It is advisable to enter the motor supply cable resistance (p0352) before the standstill
measurement (p1910) is performed, so that it can be subtracted from the total measured
resistance when the stator resistance is calculated (p0350).
Entering the cable resistance improves the accuracy of thermal resistance adaptation,
particularly when long supply cables are used. This governs behavior at low speeds,
particularly during encoderless vector control.
For p1909.20 = 1 (and p0352 = 0), the supply cable resistance is set from the difference of the
measured value and the default value of the automatic parameterization or the value of the data
set for list motors. The supply cable resistance then normally no needs to be entered.
Specifics for induction motors
Figure 6-18 Equivalent circuit diagram for induction motor and cable
If an output filter (see p0230) or series inductance (p0353) is used, the data for this must also
be entered before the standstill measurement is carried out.
246
Induction motor Permanent mag‐
synchronous mo‐
x
x
x
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Synchronous re‐
net luctance motor
tor
‑ ‑
x x
x x
Drive functions