Siemens SINAMICS S120 Function Manual page 275

Vdc_max control
Figure 6-9
The switch-on level for V
p1294 (automatic detection of the
ON level (V/f))
Value
= 0
= 1
Drive functions
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
Switching the V control on/off
dc_max
-control (r1282) is calculated as follows:
dc_max
Switch-on level of the
V
Meaning
Switched out r1282 = 1.15 × p0210
Switched in r1282 = V
control (r1282)
dc_max
- 50 V
dc_max
U/f control (vector control)
6.4 Vdc control
Comment
p0210 ≙ device supply voltage
V ≙ overvoltage threshold
dc_max
of the Motor Module
275