Siemens SINAMICS V20 Operating Instructions Manual page 250

Parameter list
8.2 Parameter list
Parameter Function
Dependency: If dynamic braking is used with DC braking enabled as well as compound braking, DC braking and com-
pound braking will take priority.
Notice: Initially the brake will operate at a high duty cycle dependant on the DC link level until the thermal limit is
approached. The duty cycle specified by this parameter will then be imposed. The resistor should be able to
operate at this level indefinitely without overheating.
The threshold for the warning A535 is equivalent to 10 seconds running at 95 % duty cycle. The duty cycle
will be limited when it was running 12 seconds at 95 % duty cycle.
P1240[0...2] Configuration of Vdc
controller
Enables / disables Vdc controller. The Vdc controller dynamically controls the DC link voltage to prevent
overvoltage trips on high inertia systems.
0
1
2
3
Caution: If P1245 increased too much, it may interfere with the inverter normal operation.
250
Range Factory
default
0 - 3 1
Vdc controller disabled
Vdc_max controller enabled
Kinetic buffering (Vdc_min controller) enabled
Vdc_max controller and kinetic buffering (KIB) enabled
Can be Scaling
changed
C, T -
Operating Instructions, 11/2016, A5E34559884-006
Data Data Acc.
set type Level
DDS U16 3
SINAMICS V20 Inverter