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6 Way Fan Hub Wiring Questions

post #1 of 11
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Hello all, hopefully this would be considered the right forum to post this question in. Currently, I am in the process of building a WC'd rig, however, I am having some issues figuring out how to go about doing the wiring the way I had initially planned. So I am going to be running 6 Gentle Typhoons per channel on my Lamptron FC5-V2, and I decided I did not want to use Y-splitters. Each channel powers the 6 fans for a single radiator, so that is why I am trying to get this to work. I decided to give some PCB fan hubs a try (Phobya Fan Hub) to see if they can accomplish what I am trying to do while maintaining a clean look.

Now, it is a 4 pin molex for power on that PCB, so I am wondering if I could do some wiring like under the diagram below. Each fan from Fan 2 through Fan 6 would be plugged into the remaining 5 fan connectors, I just did one for demonstrative purposes. I am wanting to plug the 6 fans into the 3 pin connectors, and split the molex into a 3 pin fan connector which would subsequently run into a channel on my Lamptron FC5-V2. The real reason I am asking, is because every single molex to 3 pin I see has only 2 wires on the 3 pin. Correct me if I am wrong, but don't I need all 3 wires if I wish to monitor the RPM of the fans on the channel? If not, will doing it with just 2 wires suffice? Also, what wires would I branch off of the molex for 3 wire to make it work? I am a tad confused when trying to deal with molex to 3 pin (as I am sure you can tell biggrin.gif).

This is the diagram for what I am essentially trying to do. Please pardon my poor skills in MS Paint. I have not used it in over a decade.



So does anyone know if what I have equipment wise will work, and how I should go about it? I am assuming that what I am trying to do is at least feasible, given that you know how to wire it. Any help would be greatly appreciated. thumb.gif

Regards,
Addiction
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post #2 of 11
Hello there!

What you'll want to do is connect the red wire from the fan controller to the yellow wire of the molex, then the black wire from the fan controller to the black wire next to the yellow wire on the molex. The other black and red wire on the molex and the other wire from the controller will not be used.

The only problems you might run into is the single channel on the fan controller might not be able to supply the amperage for 6 fans and the controller will also not be able to monitor the speed of the fans.
     
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post #3 of 11
Thread Starter 
Quote:
Originally Posted by EpicAMDGamer View Post

Hello there!
What you'll want to do is connect the red wire from the fan controller to the yellow wire of the molex, then the black wire from the fan controller to the black wire next to the yellow wire on the molex. The other black and red wire on the molex and the other wire from the controller will not be used.

Ahh, I am wanting to monitor the RPM of my fans, and I know the controller can handle it. Startup wattage will be ~24w, and the controller can handle 30w per channel. Only using 2 channels though (12 total fans, for 2 radiators). Thanks for your response by the way!
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post #4 of 11
Quote:
Originally Posted by Addiction View Post

Ahh, I am wanting to monitor the RPM of my fans, and I know the controller can handle it. Startup wattage will be ~24w, and the controller can handle 30w per channel. Only using 2 channels though (12 total fans, for 2 radiators). Thanks for your response by the way!

Okay then so the power won't be a problem

If your really motivated you can take the green from the controller and connect it directly to ONE of the fans, but that will let you only monitor one of the fans on each channel.
     
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post #5 of 11
Thread Starter 
Quote:
Originally Posted by EpicAMDGamer View Post

Okay then so the power won't be a problem
If your really motivated you can take the green from the controller and connect it directly to ONE of the fans, but that will let you only monitor one of the fans on each channel.

That would actually be the way to go about it, as if I had the RPM on all 6 fans, I imagine the fan controller would go haywire trying to monitor 6 at once for 1 input!

So taking the green from the controller to one fan. You mean the wire coming out of the molex to 3 pin, or the wire directly coming from the fan controller? I am not 100% sure how exactly you mean to connect the RPM lead. Sorry for the questions, I am terrible at PC wiring. tongue.gif
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post #6 of 11
Quote:
Originally Posted by Addiction View Post

That would actually be the way to go about it, as if I had the RPM on all 6 fans, I imagine the fan controller would go haywire trying to monitor 6 at once for 1 input!
So taking the green from the controller to one fan. You mean the wire coming out of the molex to 3 pin, or the wire directly coming from the fan controller? I am not 100% sure how exactly you mean to connect the RPM lead. Sorry for the questions, I am terrible at PC wiring. tongue.gif

Give me like 10 minutes, I'll draw up a diagram. thumb.gif
     
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post #7 of 11
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Quote:
Originally Posted by EpicAMDGamer View Post

Give me like 10 minutes, I'll draw up a diagram. thumb.gif

Much appreciated good sir! This is the reason I love these forums over any other one. Everyone always seems willing to go the extra mile to help a newbie out. cheers.gif
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post #8 of 11
So here's how you'd want to hook it up.



Now on there I showed a molex connector which you would then plug into the female on the hub.


(if your good with a sodering iron) You don't have to chop off a male molex and connect the wires, you could soder from the fan controller straight to the pins on the female molex on the hub but you must make sure you have them oriented the right way (one side of the molex is flat and other is angled corners)
Edited by EpicAMDGamer - 12/1/12 at 9:03pm
     
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post #9 of 11
Thread Starter 
Quote:
Originally Posted by EpicAMDGamer View Post

So here's how you'd want to hook it up. *Snip* (Click to show)
Now on there I showed a molex connector which you would then plug into the female on the hub. You don't have to chop off a male molex and connect the wires, you could soder from the fan controller straight to the pins on the female molex on the hub but you must make sure you have them oriented the right way (one side of the molex is flat and other is angled corners)

OK, I think I understand now. Now I just need to find a way to go about splicing all the wires in cleanly with my sleeving (particularly the wire coming from the fan to the molex before it even plugs into the 6 way hub lol). That should be fun. Hopefully it all works out in the end though, and I do truly appreciate you taking your time out to help me! +Rep to you sir. thumb.gif

Regards,
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post #10 of 11
Quote:
Originally Posted by Addiction View Post

OK, I think I understand now. Now I just need to find a way to go about splicing all the wires in cleanly with my sleeving (particularly the wire coming from the fan to the molex before it even plugs into the 6 way hub lol). That should be fun. Hopefully it all works out in the end though, and I do truly appreciate you taking your time out to help me! +Rep to you sir. thumb.gif
Regards,
Addiction

Well with the molex for the hub, since they aren't needed, you can rip out the pins with red and black wires (the one right next to the red) so then you only have to worry about 2 wires. I've never done any sleeving but perhaps you might want to try it, there's some people here that do it, you should ask Lutro0 about it.

And Thanks for the Rep, let me know if you have any more questions.
     
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