Siemens SINAMICS S150 Operating Instructions Manual page 270

Setpoint channel and closed-loop control
7.3 V/f control
Permanent voltage boost (p1310)
The voltage boost is active across the entire frequency range, whereby the value decreases
continuously as the frequency increases.
Figure 7-6
270
Permanent voltage boost (example: p1300 = 0, p1310 >0, p1311 = 0)
Drive converter cabinet units
Operating Instructions, 07/07, A5E00288214A