Siemens SINAMICS S120 Function Manual page 150

Vector control
4.15 Instructions for commissioning permanent-magnet synchronous motors
Table 4-7
p0350
p0356
p0357
As soon as the motor starts to rotate, a voltage is generated. When work is carried out on
the converter, the motor must be safely disconnected. If this is not possible, the motor must
be locked by a holding brake, for example.
Features
● Field weakening up to approx. 1.2 * rated speed (this depends on the drive converter
● Flying restart (for operation without encoder, only possible with additional VSM)
● Vector closed-loop speed and torque control
● Vector V/f control for diagnostics
● Motor identification
● Automatic rotating encoder adjustment (the zero encoder position is calibrated)
● Speed controller optimization (rotating measurement)
● Thermal protection via temperature sensor (PTC/KTY)
● All encoders that can be connected to an SMC10, SMC20 or SMC30 are supported.
● Operation with or without encoder is possible.
Supplementary conditions
● Maximum speed or maximum torque depend on the converter output voltage available
● Calculating the maximum speed:
150
Equivalent circuit diagram for motor data
Parameter
Motor stator resistance, cold
Motor stator inductance
Motor stator inductance, d axis
WARNING
supply voltage and the motor data, also refer to limitations/ constraints)
and the back EMF of the motor (calculation specifications: EMF must not exceed U
converter).
Calculating k see "Commissioning".
T
Description
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
Remark
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rated
Drive Functions