Appendix 1: Guidance On Commissioning Lspm - Line Started Permanent Magnet Motors - Siemens SINAMICS G120X Commissioning Manual

4 Appendix 1: Guidance on commissioning LSPM (Line Started Permanent Magnet motors)
Appendix 1: Guidance on commissioning LSPM
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(Line Started Permanent Magnet motors)
LSPM are special kind of PM motors comprising also the rotor cage.
It allows to connect this motors D.O.L. (direct on line) similarly to asynchronous motors.
Once the motor speed is close to synchronous speed the rotor magnets cause locking into
synchronism and successive operation as synchronous motor.
If the supplier of LSPM motor allows operation from frequency inverter then you can
commission the drive using V/F mode for PM motors.
Recommended procedure:
P10 = 1 (Quick commissioning)
P96 = [IEC/NEMA Standard]
P300 = 2 (Synchronous motor)
P304 = [nominal voltage]
P305 = [nominal current]
P307 = [nominal power]
P308 = 0 (you do not need to enter power factor if P300=2)
P310 = [nominal frequency]
P311 = [synchronous speed; 60 * nominal frequency/number of pole-pairs]
P611 = [Here should be put motor winding thermal time constant if known from motor
supplier or the overtemperature protection should be based on temperature sensor.
It his case change setting p601]
P3900 = 3 (end of Quick commissioning with motor parametrization)
Starting performance:
If the motor tends to stall at starting adjust the starting voltage boost using P1310, P1311,
P1312.
NOTE If there are problems with current or speed oscillations during motor acceleration then adjust
P1338, P1339, P1349. Usually you need to set P1349 to about 95% of nominal motor
frequency.
G120X commissioning guide for permanent magnet motors PMSM
Entry-ID: 109780815, V1.0, 07/2020
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