PWM Control of electric Waterpump
Does anyone have an idea how I can control my electric water pump using PWM?
Regardless of the cooling water temperature, the pump should always run at at least 50%.
From a cooling water temperature of 80 ° C, the pump should go to 60% and then the speed should be increased by 10% for every 5 °C increase in the water temperature.
I am not sure which values have to be entered in the variable mapping. Many thanks
Carsten
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No it wont matter. What you will see is that below -50, the duty cycle will be 0%. Between -50 and 80, the duty cycle will vary from 40% to 50%. Above 80, the duty cycle will increase 10% for every 5 degrees. If 50% is the minimum you would like to see, then set the 50% duty cycle value to -50 also and set the 60% duty cycle value to 80.