Characteristics Of U/F Control - Siemens SINAMICS G120 Operating Instructions Manual

8.5.1.1

Characteristics of U/f control

The inverter has several U/f characteristics. Based on the characteristic, as the frequency
increases, the inverter increases the voltage at the motor.
①
The voltage boost of the characteristic improves motor behavior at low speeds. The voltage boost is effective for
frequencies < rated frequency
Figure 8-20 U/f characteristics of the inverter
Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB
Setting functions
8.5 Motor control
243