What is actually PWM? WITA^® circulation pumps (MADE IN GERMANY)

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.