Siemens SINAMICS S120 Function Manual page 226

Vector control
5.14 Motor data identification and rotating measurement
Table 5- 2 Data determined using p1910
Induction motor
p1910 = 1
Rated magnetization current (p0320)
•
Stator resistance (p0350)
•
Rotor resistance (p0354)
•
Stator leakage inductance (p0356)
•
Rotor leakage inductance (p0358)
•
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.
Figure 5-19 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.
226
Permanent-magnet synchronous motor
Stator resistance (p0350)
•
Stator resistance q axis (p0356)
•
Stator inductance d axis (p0357)
•
Drive converter valve threshold voltage (p1825)
•
Converter valve interlocking times (p1828 ...
•
p1830)
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
Drive functions