Siemens SINAMICS G150 Operating Instructions Manual page 488

Functions, monitoring, and protective functions
9.2 Drive functions
Properties
● Vdc control
– Comprises Vdc_max control and Vdc_min control (kinetic buffering), which are
– Contains a joint PI controller. The dynamic factor is used to set Vdc_min and Vdc_max
● Vdc_min control (kinetic buffering)
– The kinetic energy of the motor is used for buffering the DC-link voltage in the event of
● Vdc_max control
– Control momentary regenerative load without shutdown using "overvoltage in the DC
– Vdc_max control is only recommended for a supply without active closed-loop control
Description of Vdc_min control (kinetic buffering)
Figure 9-4 Switching Vdc_min control on/off (kinetic buffering)
488
independent of each other.
control independently of each other.
a momentary power failure, thereby delaying the drive.
link".
for the DC link and without feedback.
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A