REVELTRONICS

Hi,
I would like to convert my car from visco to brushless eletric fan with PWM control input. I dig a little bit around e-fans and found, that practically all brushless fans used in modern cars (bmw, mercedes, ...) are controlled by PWM signal. The PWM frequency depends on manufacturer and it is 10 Hz or 100 Hz. And because I already have UTCOMP in my car....

If the user output hardware is capable of delivering 100 Hz PWM, it would be interesting to add software configuration option for this. Maybe this function can wide your user base.

The configuration could be like this.
E.g.
70 degC => 10 % PWM,
95 degC => 100 % PWM
+ on/off hysteresis: 10 degC

A lot of info about brushless fans: https://www.240turbo.com/BrushlessFans.html

DigOut output in UTCOMP provides +5V in the ON state and is unconnected in the LOW state. More importantly, it is designed for low-frequency signals (5 Hz and slower), where it can exhibit unpredictable delays of 0–200 ms after the trigger. Unfortunately, it cannot be configured as a PWM output.