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Brushless cooling fan

Posted by jtoombs

jtoombs

Brushless cooling fan
January 27, 2014 12:47AM

Registered: 10 years ago
Posts: 102

Has anyone ever tried to run a brushless fan from ramps 1.4? I have a few that I believe are brushless because they have a white signal wie in addition to red and black wires. I would like to use one to cool my stepper drivers if possible. Any ideas would be great.

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lazzymonk

Re: Brushless cooling fan
January 27, 2014 02:22AM

Registered: 11 years ago
Posts: 349

They are easy to use. In fact they are the most common type of fan. The extra wire is just an rpm sensor and can be ignored.

You can plug one into the 12v aux pins between the fuses and the x axis driver.

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jtoombs

Re: Brushless cooling fan
January 27, 2014 09:51AM

Registered: 10 years ago
Posts: 102

Really? I didn't think it would be that easy. That's awesome. Thanks lazzymonk.

I have read that you can wire the fan to the D9 terminal and you can control it with g Code. Is this possible with the aux pins you mentioned?

Edited 1 time(s). Last edit at 01/27/2014 10:00AM by jtoombs.

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Cefiar

Re: Brushless cooling fan
January 27, 2014 05:44PM

Registered: 14 years ago
Posts: 1,092

If you're using the fan to cool your electronics, you want it on all the time, so use the Aux pins (which is always on).

If you're using the fan to cool your print, you want it on when G-code tells it, so use D9 (which is a switched output).