Gentle Tyhpoon 4250rpm setup.

Crumpy1 · 23 Jul 2011 at 19:41

I have recently attempted to setup my new fans to my Corsair H70. The issues I am having are listed here http://forums.overclockers.co.uk/showthread.php?t=18298250 . I need to make sure that it have set it up correctly but cannot find any online instructions anywhere to double check I have done it correctly. Currently I have a fan controller powered by a 4 pin molex connection with my 2 fans connected individually via the 3 pin connector, but this provides no power to the fans what so ever. Can anybody who has these fans or anyone that understands how these work offer me any support.

Any help would be appreciated even if they were only a possible chance they will work, as I have tried everything

Thanks

scrlk · 23 Jul 2011 at 23:42

Usually those GTs will have a Molex power connection along with a 3 pin power connector.

Crumpy1 · 26 Jul 2011 at 13:01

These fans work using the Molex connection but not the 3 pins connectors. They are connected to a Lamptron FC-2 which can power each fan with 45 watts which is more than enough power but the issue still arises.

Has anybody else had simillar or the same issues at this??

joxang · 26 Jul 2011 at 13:18

The 3pin doesn't supply power on that fan (I think there'd probably only be one wire?). They left it off on purpose in case people tried to connect it to their motherboard (which would result in asplosions).

You'll need to connect the molex, and the 3-pin to the controller, from which I think you'll be able to regulate rpm.

Crumpy1 · 26 Jul 2011 at 13:23

joxang said:
The 3pin doesn't supply power on that fan (I think there'd probably only be one wire?). They left it off on purpose in case people tried to connect it to their motherboard (which would result in asplosions).

You'll need to connect the molex, and the 3-pin to the controller, from which I think you'll be able to regulate rpm.

As soon as i connect the Molex, the fans spin at 100% power. I cannot change or amend the rpm whilst this is connected. Is this what you mean?? Each fan is fitted with 1 male and 1 female 4 pin molex connector and a 3 pin fan cable socket.

The current setup is psu to fan controller using 3 seperate 4 pin molex cable to each of the 3 inputs so i cannot physically put any more power into the fan controller. The 3 pin cables then connect to the fan controller.

joxang · 26 Jul 2011 at 13:35

Crumpy1 said:
As soon as i connect the Molex, the fans spin at 100% power. I cannot change or amend the rpm whilst this is connected. Is this what you mean?? Each fan is fitted with 1 male and 1 female 4 pin molex connector and a 3 pin fan cable socket.

The current setup is psu to fan controller using 3 seperate 4 pin molex cable to each of the 3 inputs so i cannot physically put any more power into the fan controller. The 3 pin cables then connect to the fan controller.

joxang said:
The 3pin doesn't supply power on that fan

^^^^!!!
Unless I've got the wrong fan, the 3 pin on it can't supply power at all. Power only comes from the molex. The 3 pin only has an rpm sensor wire on it, no power wire.

Have you tried connecting both the molex on the fan and the 3pin to the fan controller?

Crumpy1 · 26 Jul 2011 at 14:01

I have just tried directly connecting the fans molex's to the fan controller. They instantly spin at full speed. I have connected the 3 Pin to the fan controller also and it makes no difference to the speed. They spin at full power even if i set the channel to off its as if the fan controller is not even there. How are yours setup?

BlackBat · 26 Jul 2011 at 14:08

I think there'd probably only be one wire?

This is indeed correct, the 3-pin is there so the fans r.p.m. can be read as it only has one yellow wire connected. To quote from the specs. from Scythe's website:-

Connector:
4-Pin Molex Connector with additional 3-Pin Fan Speed Signal Connector

As the Lamptron FC2 has 3-pin headers you will need to use a molex to 3-pin adaptor to connect the fan to the controller and you could if you wish plug the 3-pin fan speed signal connector into a spare header on your mobo. so it's speed can be read via some appropriate software. As the Lamptron can supply 45W. and the fans only need 16.2W. you should have no problem as long as you connect as I've explained.

Crumpy1 · 26 Jul 2011 at 14:12

BlackBat said:
This is indeed correct, the 3-pin is there so the fans r.p.m. can be read as it only has one yellow wire connected. To quote from the specs. from Scythe's website:-

As the Lamptron FC2 has 3-pin headers you will need to use a molex to 3-pin adaptor to connect the fan to the controller and you could if you wish plug the 3-pin fan speed signal connector into a spare header on your mobo. so it's speed can be read via some appropriate software. As the Lamptron can supply 45W. and the fans only need 16.2W. you should have no problem as long as you connect as I've explained.

Thank you for the help, i will try this out later and post back. I am really having trouble with this so i will follow your instructions to the T so this will hopefully solve any issues i am having.

Do you mean that i need to order a 3 pin female connector with a 4 pin molex on the other end, plug the 3 pin to the controller and plug the FAN molex to the controller and use the other two molex input's on the controller to power them using the PSU? Can i connect both the fans together using the FANS molex connections and plug this into the controller to power them both? and then use a Y cable for the 3 pins so 1 channel controls both fans??

BlackBat · 26 Jul 2011 at 15:41

Yes you could use one channel on the FC2 to control both fans, however you need an adapter with a 3-pin male at one end and one male 4-pin molex on the other and it must have both the red and black wires. The fans have a molex power pass through connector so they can be plugged together to share the power from the controller. Do not connect the fans directly to the P.S.U. as this will bypass the controller and the fans will spin at full pelt.

Crumpy1 · 26 Jul 2011 at 15:56

BlackBat said:
Yes you could use one channel on the FC2 to control both fans, however you need an adapter with a 3-pin male at one end and two male 4-pin molex on the other and it must have both the red and black wires connected to each connector. Do not connect the fans to the P.S.U., they will draw there power from the controller.

Thank you for your help but im a tad confused. The controller has male sockets on it which you plug the female 3 pins into. If i get a 4 pin molex & 3 male pin cable the fan molex goes into the one end but i must need a 3 pin female on the other end to plug into the controller into, or am have i completey miss understood what you meant.

The fans have a female connector on each and the controller has 6 x 3 pin male connections.

Sorry to be a pain.

Krony · 26 Jul 2011 at 17:36

See ur other thread, i cant post links because of the rules even tho Overclockers don't stock them.

Krony · 26 Jul 2011 at 18:09

I think i had the same problems with my pump, i can't find a 4 pin molex male to 3 pin pwm female anywhere, if u have a spare 3 pin female pwm on something u can just cut the molex off and wire them up, u only need the black and red wires as the fan controller will just pulse the current to alter the speed, the only problem with doing this is if u want the pwm connector that comes with the fan fitting on the cpu header it will give it a false reading if it is spinning too slow and the pc won't boot but u can just have the fans turned up when starting the pc.

Crumpy1 · 26 Jul 2011 at 18:28

Krony said:
See ur other thread, i cant post links because of the rules even tho Overclockers don't stock them.

Thank you all for the help overclockers DO stock them i believe its item number CB-012-AK, can anybody confirm if this is the correct cable??

Krony · 26 Jul 2011 at 18:38

I posted a link to that earlyer but the 3 pin pwm connector is not connected to the power (red/black) on the molex, basically that one is if u had a fan with just a molex u could add that and have it also connect to ur cpu header for a reading.
Edit: can u post a pic of the connections on one of the fans plz ?
I was looking through all my junk lol and found enough to make one, if u get stuck let me know and i'll send u this, it's not the cleanest looking thing but it will do the job

Crumpy1 · 26 Jul 2011 at 18:41

ok thanks, i believe i have found one elsewhere. It is a 4 pin molex with a 3 pin female on the other end. it consists of 2 cables only one red and one black. However it does not have yellow. Is this still ok?? What does the yellow cable do.

Crumpy1 · 26 Jul 2011 at 18:46

Krony said:
I posted a link to that earlyer but the 3 pin pwm connector is not connected to the power (red/black) on the molex, basically that one is if u had a fan with just a molex u could add that and have it also connect to ur cpu header for a reading.
Edit: can u post a pic of the connections on one of the fans plz ?
I was looking through all my junk lol and found enough to make one, if u get stuck let me know and i'll send u this, it's not the cleanest looking thing but it will do the job

Thank you for all your help, i have just ordered from Ebay 2 of these one for each fan, just incase. I will post back when i have received it to confirm this has worked and ask for more help if needed.

One final thing, i would like to monitor the speeds (RPM) of the fans IF i can get them working ever. What is the best way to do this now? The fan does have a yellow cable (3 pin)attached which i believe is to monitor the speeds, can you please confirm that this is correct and if so how i can do this.

Thank you to all for your help and support.

Krony · 26 Jul 2011 at 18:56

The yellow cable is for rpm reading but the way fan controllers work is it just pulsates the current to adjust the fan speed.
If u connect one of the pwm connector that are fixed to the fans to the cpu header it will tell the motherboard that the cpu fan is running and it will boot up, only problem u might have which i had when i was running a pump in the same way was if u had them set too low the reading can fluctuate due to the way the fan controller pulses the current and it might thing that the fans are not spinning.
Basically u need to have a fan plugged into the cpu fan header for the pc to start up for safety reasons.

BlackBat · 26 Jul 2011 at 19:28

Just got back to see all this, as you will have already have figured out, this:-

3-pin male at one end and one male 4-pin molex on the other

should have read as this:-

3-pin male at one end and one female 4-pin molex on the other

sorry about that.

Crumpy1 · 26 Jul 2011 at 20:26

BlackBat said:
Just got back to see all this, as you will have already have figured out, this:-

should have read as this:-

3-pin male at one end and one female 4-pin molex on the other

sorry about that.

No problem, i was just double checking this was correct, as i did not want to order the wrong cable and have to take it back again.