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How to wire/control 3 140mm fans?

post #1 of 5
Thread Starter 
Okay, I would very much be able to wire up the 3 140mm fans on my rad.
How do I do that?

And is there a way to get a fan controller that can control all 3 fans so that they have the same speed?

In a perfect world, I would like to have automatic control of the 3 fans. It would be great if I could connect the 3 fans to the cpufan header on my mobo and have that one header control all 3 fans.

Can the one header provide enough juice to effectively control 3 140mm fans together?

How did you guys connect your multiple rad fans? Any means of controlling the fans? Either automatic control or manual control will do.
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post #2 of 5
3 140mm fans on 1 header may be too much, typically you only get 1amp per header, 2amps on some boards, we'd need to know which fans and mobo.

Its the same with fan controllers, you need enough power to have all the fans on 1 channel, the Lamptrons and Rheobus's are all above 20w per channel.
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post #3 of 5
Thread Starter 
Looks like 1 amp per header is sufficient then.
My 3 140mm are the Thermalright TR TY-140 and the Thermalright site claims 2.40 W / 0.20 Amp at 100% duty. So with 0.4 Amps to spare, it looks like the one header might be able to pull it off after all.
That would be awesome if it turned out I can use the mobo headers to power/control my rad fans.
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post #4 of 5
As long as all 3 are below whatever header you have, which it looks like they are, simply combine the 3 blacks and 3 reds together. Only use one of the three fans RPM leads or you will get inaccurate RPM readings as the signals will conflict.

So:

3 reds together
3 black together
1 yellow to plug, other two leave disconnected.

I have a scythe controller with 6 GT-15's on a single header connected this way and it works great.
post #5 of 5
Some fans need a lot more current when starting up, like GT:s. AP-15's for example take 4 times more current at startup.


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