Efficient Networks Siemens Sinamics S120 - Manual (Page 175)

Vector V/f control (r0108.2 = 0)
5.4 Vdc control
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
175
5.4 Vdc control
Description
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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
– Typical cause
The drive is operating in regenerative mode and is supplying too much energy to the
DC link.
– Remedy