Siemens 6SL3845-2NN41-8AD2 Operating Instructions Manual page 119

Adjustable parameters
Parame‐
ter
p1240
Setting for the controller configuration for the voltage DC link (vdc controller).
Values:
0: Inhib Vdc ctrl
1: Enable vdc-max controller
The vdc-max controller increases the ramp-down times automatically to keep the DC link voltage within
the permissible limits.
Parame‐
ter
p1242
Display of the switch-on level of the vdc-max controller.
Parame‐
ter
p1243
Setting for the dynamic factor of the vdc-max controller.
100% means that the following parameters are used in accordance with their initial settings. The use is
based on a theoretical controller optimization.
● p1250, gain
● p1251, settling time
● p1252, derivative-action time
If subsequent optimization is required, this can be set using the dynamic factor. In this case p1250,
p1251, p1252 parameters are weighted with the dynamic factor p1243.
Parame‐
ter
p1250
Display of the switch-on level of the vdc-max controller.
Parame‐
ter
p1251
Setting for the integral-action time of the vdc controller.
The effective integral time can be determined using p1243.
SINAMICS SM150 6SL3845-2NN41-8AD2
Operating Instructions Rev.201910281310 EXAMPLE
Function
Vdc_controller configuration
Function
Vdc_max_controller switch-on level
Function
Vdc_max_controller dynamic factor
Function
Vdc_controller proportional gain
Function
Vdc_controller integral time
Adjustment range
0 ... 3
Factory setting: 1
Unit
V
Adjustment range
10 ... 200 %
Factory setting: 100 %
Adjustment range
0.00 ... 10.00
Factory setting: 1.00
Adjustment range
1 ... 1000 ms
Factory setting: 40 ms
Operation
8.5 Functions
119