V/F Control - Siemens SINAMICS G120 Operating Instructions Manual

Parameter
Parameter
p0010
p0230
p0235
p0350
p0352
Additional information on the parameters is provided in the List Manual.
6.24.2

V/f control

Overview of the U/f control
The U/f control is a closed-loop speed control with the following characteristics:
● The inverter controls the output voltage using the V/f characteristic
● The output frequency is essentially calculated from the speed setpoint and the number of
pole pairs of the motor
● The slip compensation corrects the output frequency depending on the load and thus
increases the speed accuracy
● Not using a PI controller prevents the speed control from becoming unstable
● In applications in which greater speed accuracy is required, a closed-loop control with load-
dependent voltage boost can be selected (flux current control, FCC)
Converter with the CU230P-2 Control Units
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE
Description
Drive commissioning parameter filter (factory setting: 1)
0: Ready
2: Power unit commissioning
Drive filter type, motor side (factory setting: 0)
0: No filter
1: Output reactor
2: dv/dt filter
3: Siemens sine-wave filter
4: Sine wave filter, third-party manufacturer
Number of motor reactors in series (factory setting: 1)
Number of reactors connected in series at the inverter output
Motor stator resistance, cold (factory setting: 0 Ω)
When selecting a list motor (p0301), p0350 is preset (default setting) and is write protec‐
ted.
Cable resistance (Factory setting: 0 Ω)
If you set p0352 after the motor data identification, then you must subtract the difference
that was changed with p0352, from the stator resistance p0350 or repeat the motor data
identification.
Advanced commissioning
6.24 Motor control
297