Siemens SINAMICS G120X - Characteristics after Selecting Standard Drive Control; U;F Control with Standard Drive Control

6.7.2.3 U/f control with Standard Drive Control
Overview
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Figure 6-73 Default setting of the U/f control after selecting Standard Drive Control
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
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① The closed-loop starting current control optimizes the speed control at low speeds
② The converter compensates the voltage drop across the motor stator resistance
Figure 6-74 Characteristics after selecting Standard Drive Control
Advanced commissioning
6.7 Motor control
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC 387