Using a 12 volt fan on 6HC board with vin 24 volts

[Weevil]

I have a 12-volt fan I want to use on Out 7. The 6HC board has 24 volts for Vin. Could I just connect one lead of the fan to the dedicated 12V pin and connect the other lead to ground on V_OUTC2 on Out 7? Wouldn't that make it controllable?

[Gixxerfast]

Do you have other 24V units already connected to out8 and out9 so you don't want to jumper the voltage to 12V?

[Weevil]

@gixxerfast Yes, there is another fan. I suppose I could move one of the fans to Out 4.

[Gixxerfast]

@weevil You could of course keep V- (fan gnd wire) connected to out7 pin and steal the V+ (12V) from any other free 12V pin. It's just a tiny bit more messy

[Weevil]

@gixxerfast I just looked at the wiring diagram. It has this warning:
"Note: These outputs are protected by a flyback diode connected to V_OUT_LC_2. Do not mix loads connected to V_OUT_LC_2 with the jumper set to 12V and loads connected to V_FUSED on the same bank."

[deckingman]

@weevil How many fans do you currently have in total, and where ae they connected?

[Weevil]

@deckingman I have 2 fans, one for the hotend and one for part cooling. I have decided to just stick with my 24v fans, much simpler.

[dc42]

@weevil said in Using a 12 volt fan on 6HC board with vin 24 volts:

@gixxerfast Yes, there is another fan. I suppose I could move one of the fans to Out 4.

That's the obvious solution, then you can set one of the two banks of outputs to 12V and the other one to VIN.

[deckingman]

@weevil To expand on what @DC42 has said, set jumper on out 4-6 to fit between 12V and V_outC1, set jumper on out 7-9 to fit between V_fused and V_OutC2, connect the 12V fan to any of out 4 to 6, connect the 24V fan to any of out 7 to 9.

[Weevil]

@dc42 Thanks!

[Weevil]

@deckingman Thanks