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Wiring questions...

post #1 of 8
Thread Starter 
Presently, I have aquired a few 40mm High Velocity Fans from a server. I want to try and modify them for installation in the PC that I have. I know that the connectors that are on them are not compatible with my motherboard (Asus A8N-E). I want to put them on the RaidMax Glacier that I have. Presently it has a 120mm fan on it (5 blades), and I want to see if these high-velocity fans will help decrease temps (more airflow). I realize that there MAY be a noise increase, but that's something I'll deal with later.

If anyone is familiar with the Dell PowerEdge 1850, it's the San Ace 40 fan that is installed on that server. The plug has 6 wires (Red/White - Red - Blue/White - Blue - Black/White - Black). I'm wondering what way I have to combine them to make them work with the motherboard using the CPU fan Header. If it's not possible, I know that they are 12v DC fans drawing 1.1a per fan.

I have a 120mm fan presently on the heatsink with a fan controller (Variable Pot) attached to the back of the PC) that also plugs into the header for RPM reading. IF necessary, I can always hook up to that, but I'm not sure about that either, considering that I don't know the wiring for the fans as it is.

Any help with this is greatly appreciated. I know that it's a little more modding than normal for air-cooled systems, but figure I have the hardware, what the hell. Right?

Thank you in advance. Anyone that can help, I'll get heat differences up online as soon as I'm done with the work.
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post #2 of 8
I would guess that if it has a red wire and a black, those are going to be your voltage and ground respectively... the others are most likely just sensors... no real way to tell for sure aside from testing (unless it has it printed in a small font on the fan itself)

Also, are you saying these are 40mm fans or 120x40mm (perhaps 38mm) fans? If they're 40mms, I would think that all the dead space (central motor+shrouding) would render their high CFM less useful if you're placing them in a 4x4array to blow through the CPU fins...

Lastly, I would highly advise against attaching them to your motherboard headers... they're only rated to deal with a .30A load I believe, and I've never attached more than .55A 120x38 server fans to my 3pins...

Good luck on your cooling experiment though buddy... and remember, potentiometers are your friends with these sort of adventures
post #3 of 8
Thread Starter 
Yes, I would be placing them on the heatsink in a 4x4 array giving much more air flowing through the fins. I did testing with a 9v battery over the weekend on one of them (made sure I had one to destroy with testing) and it's voltage & ground for the red & black, respectively. And with only 9v, it flows a lot of air compared to the 120mm. They are very small shrouds on the fans. They are the 40mm delta electronics fans that are used in 1U server applications. They have 2 fans (one on each side) that work together. If you've ever cracked open a 1U server, I'm positive that you've seen them. I also have 4 that are larger, and they are out of a different 1U server. The specific servers that I got the fans from are the Dell PowerEdge 1650 & 1850 respectively. Now, the 1850 fans I've not started playing with, considering I only have 4 and don't have one to blow up yet (worst case senario).

I discussed this with a few friends here, and we are of the same persuasion, we'll need a bigger POT for the variable just to make sure (not sure of the exact specs of the pot in the system right now, but it's not THAT big, and it's only controlling a 120mm, 5 blade fan) if we are going to go that route, but nothing gets connected to the motherboard. Unless I figure out what the blue wire is. It's either a sensor to read the fan working (considering it came out of a server), or a variable for the motherboard to control speed. Either way, I'll have to find a schematic of the motherboard from the manufacturer (Dell) and get the specifics of the wiring. I'm not sure what the blue line is, but if it's just a sensor, I can use that with the motherboard and read what the fan(s) are doing.

Next step, unless someone is knowledgable with Dell server hardware, is find out what the wires are doing on the motherboard, and then get them wired to work on the computer. Solder, crimp connectors, tape, and some time is the next point that will be on the experiment on high-velocity fans on this system.

Any other input is greatly appreciated. I'm sure there are others here that are more knowledgable than me in this respect. So, if you have $0.02 to contribute, by all means, let me know!!
Any information for the wiring of these fans are greatly appreciated!!

Thanx all!
Edited by Raziel - 5/12/08 at 8:08am
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post #4 of 8
What's the exact model of the San Ace fan? You can find their specs and pinouts online.
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post #5 of 8
Thread Starter 
It's the San Ace 40, that's all that I know. I don't have them with me at work, but they aren't the same wire diagrams that are posted on the manufacturer website. The wires on the plugs are as follows:

Red w/white stripe, Red, blue w/white stripe, Blue, Black w/white stripe, Black

I'm going to assume that the striped wires are for one fan, and the solids are for the other fan (considering there are 2 in each one). Now, those are the same wiring as the other Delta fans that I have from the PowerEdge 1650. I don't have connectors to match the female connectors that are attached to the fans, but it's easy enough to remove them and put them where I need them.

Thank you.
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post #6 of 8
Thread Starter 
Bump for someone to help me with this..... I'm at a loss...
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post #7 of 8
Quote:
Originally Posted by Raziel View Post
Bump for someone to help me with this..... I'm at a loss...
There are about 30 different San Ace 40... which model do you have?


Here is the list of their fans: http://db.sanyodenki.co.jp/product_d...ing_dcfan.html
Click on 40mm.
Find your fan.
Click the model link.
Look at the "Fan power lead"
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post #8 of 8
Thread Starter 
I've already checked that site. The closest that I can find is this one:

9CR0412S501 http://db.sanyodenki.co.jp/product_d...master_id=1186

(However, the number on the side of the fan isn't a XXX501, it's a 5023.)

But here's the issue, the wiring specs are not matching. I have 3 sets of wires, one set with a white line in the middle and a set without. So I'm assuming that it's for each fan in the pair.

Red/white, Red, Blue/white, Blue, Black/white, Black

However, I don't know if that's an RPM sensor in the middle (blue wires), or a variable speed control connection. These fans were stock in a Dell PowerEdge 1850, and the wiring is unknown to me. They attach to the board, and that's as far as I know for the specifics.
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