Dynomotion

Group: DynoMotion Message: 4246 From: namorkipast Date: 3/17/2012
Subject: FAN on KStep always run
Axis disabled but FAN on KSTEP always run how disable fan when axis disable or IC not warm?
Group: DynoMotion Message: 4252 From: Tom Kerekes Date: 3/18/2012
Subject: Re: FAN on KStep always run
Hi Namorkipast,
 
Yes the FAN connector is wired to be always on whenever there is +5V.  The fan takes 0.1A max so it can be driven by one of the relay driver outputs to control it.
 
But actually you should be able to operate without the fan entirely.  Unless you have a hot environment even with full 5A the Mosfets do get quite warm but stay well below the 150C max allowed operating temperature.
 
Regards
TK