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
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