Siemens SINAMICS G120 Operating Instructions Manual page 275

Parameters of the Vdc_max control
The parameters differ depending on the motor control mode.
Parameter for
V/f control
p1280 = 1
r1282
p1283
p1284
p1290
p1291
p1292
p1294
p0210
For more information about this function, see the List Manual (function diagrams 6320 and
6220).
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC
Parameter for Description
vector control
p1240 = 1 Vdc controller configuration(Factory setting: 1)
1: Vdc controller is enabled
r1242 Vdc_max control activation level
DC link voltage value above which the Vdc_max control is acti-
vated
p1243 Vdc_max control dynamic factor (factory setting: 100 %)
Scaling control parameters p1290, p1291 and p1292
--- Vdc_max controller time threshold
Setting the monitoring time of the Vdc_max controller.
p1250 Vdc_max control proportional gain (factory setting: 1)
p1251 Vdc_max control integral time (factory setting p1291: 40 ms,
p1251: 0 ms)
p1252 Vdc_max control rate time (factory setting p1292: 10 ms, p1252:
0 ms)
p1254 Vdc_max control automatic ON level sensing(Factory setting,
dependent on the Power Module)
Automatically sense switch-on levels of the Vdc_max control.
0: Automatic detection disabled
1: Automatic detection enabled
p0210 Unit supply voltage
If p1254 or p1294 = 0, the inverter uses this parameter to calcu-
late the switch-in thresholds of the Vdc_max control.
Set this parameter to the actual value of the input voltage.
Advanced commissioning
6.6 Protection functions
275