Vdc Control - Siemens SINAMICS S120 Function Manual

5.4

Vdc control

Description
Figure 5-6 Vdc control V/f
The "Vdc control" function can be activated using the appropriate measures if an overvoltage
or undervoltage is present in the DC link.
● Overvoltage in the DC link
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
– Typical cause
The drive is operating in regenerative mode and is supplying too much energy to the
DC link.
– Remedy
Vector V/f control (r0108.2 = 0)
5.4 Vdc control
175