U/F Control With Standard Drive Control; Characteristics After Selecting Standard Drive Control - Siemens SINAMICS G120X Operating Instructions Manual

6.7.2.3

U/f control with Standard Drive Control

Overview
Figure 6-73
Selecting application class Standard Drive Control in the quick commissioning adapts the
structure and the setting options of the U/f control as follows:
● Starting current closed-loop control: At low speeds, a controlled motor current reduces the
tendency of the motor to oscillate.
● With increasing speed, the converter changes from closed-loop starting current control to U/
f control with load-dependent voltage boost.
● The slip compensation is activated.
● Soft starting is not possible.
● Reduced setting options
Function description
Characteristics after selecting the application class Standard Drive Control
①
②
Figure 6-74
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
Default setting of the U/f control after selecting Standard Drive Control
The closed-loop starting current control optimizes the speed control at low speeds
The converter compensates the voltage drop across the motor stator resistance

Characteristics after selecting Standard Drive Control

Advanced commissioning
6.7 Motor control
387