ST300 | Limiting Inrush Current (e.g. for Fan Motors)

To keep the inrush current lower for loads that require torque strongly dependent on frequency, various U/f curves are available.

The different curves can be selected using P04.00.

For fans and pumps with low starting torque, set the following parameter:

P04.00 = 4

Alternatively, you can operate the inverter in vector mode. In this case, the inverter automatically adjusts the required voltage. However, a motor calibration is necessary for this.

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