Siemens SINAMICS SM150 - Page 125

Adjustable parameters
Parame‐
ter
Function Adjustment range
p1240 Vdc_controller configuration 0 ... 3
Factory setting: 1
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
Function Unit
p1242 Vdc_max_controller switch-on level V
Display of the switch-on level of the vdc-max controller.
Parame‐
ter
Function Adjustment range
p1243 Vdc_max_controller dynamic factor 10 ... 200 %
Factory setting: 100 %
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
Function Adjustment range
p1250 Vdc_controller proportional gain 0.00 ... 10.00
Factory setting: 1.00
Display of the switch-on level of the vdc-max controller.
Parame‐
ter
Function Adjustment range
p1251 Vdc_controller integral time 1 ... 1000 ms
Factory setting: 40 ms
Setting for the integral-action time of the vdc controller.
The effective integral time can be determined using p1243.
Operation
8.5 Functions
SINAMICS SM150 6SL3845-7NN46-7AA2
Operating Instructions Rev.201910281345 EXAMPLE 125