Siemens SINAMICS G220 - Voltage Boost

14.10.4.2 Voltage boost
Overview
The voltage boost at low speeds improves the startup behavior of the motor.
Description of function
In the following circumstances, the motor cannot accelerate to its speed setpoint after it has
been switched on:
• Load moment of inertia is too high
• Load torque is too large
• Ramp-up time p1120 is too short
The converter boosts the voltage corresponding to the starting currents p1310…p1312.
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Figure14-107 Resulting voltage boost using a linear characteristic as example
Parameters
The following list contains the parameters of the "Optimize motor startup" function.
Number Name Unit
r0071 Maximum output voltage [Vrms]
p0310[0...n] Rated motor frequency [Hz]
p1310[0...n] Starting current (voltage boost) permanent [%]
p1311[0...n] Starting current (voltage boost) when accelerating [%]
p1312[0...n] Starting current (voltage boost) when starting [%]
Functions
14.10Closed-loop drive control
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB 497