PWM stands for Pulse Width Modulation. The PWM function allows the speed regulation of the pump by an external control.

To use this function, the pump must be equipped with a PWM module. If this module is present, the pump also has a two-pole connection cable so that an appropriate external control can be connected. A polarity of the line does not have to be considered.
Two different PWM modes can be selected.

The required PWM signal must meet the following requirements:
Example of a 40% PWM signal.
For T, frequencies between 100 Hz and 1 kHz are permissible.

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