![Siemens SINAMICS G120C Operating Instructions Manual Download Page 302](http://html.mh-extra.com/html/siemens/sinamics-g120c/sinamics-g120c_operating-instructions-manual_376473302.webp)
Parameter for Vdc_max control
The parameters differ depending on the motor control mode.
Parameter for V/
f control
Parameter for
vector control
Description
p1280 = 1
p1240 = 1
VDC controller configuration(factory setting: 1)
1: VDC controller is enabled
r1282
r1242
Vdc_max control switch-on level
DC-link voltage value above which the Vdc_max control is activa‐
ted
p1283
p1243
Vdc_max control dynamic factor (factory setting: 100 %) Scaling
closed-loop control parameters p1290, p1291 and p1292
p1294
p1254
Vdc_max control automatic ON level sensing(factory setting, de‐
pendent on the Power Module)
0: Automatic detection disabled
1: Automatic detection enabled
p0210
p0210
Unit supply voltage
If p1254 or p1294 = 0, the inverter uses this parameter to calculate
the switch-in thresholds of the Vdc_max control.
Set this parameter to the actual value of the input voltage.
For more information about this function, see the List Manual (function diagrams 6320 and
6220).
Overview of the manuals (Page 459)
Advanced commissioning
6.25 Motor and inverter protection by limiting the voltage
SINAMICS G120C converter
302
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34263257B AF