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Swiftech PWM signal splitter problem - Page 2

post #11 of 16
Not sure what Swiftech PWM you have but I'm waiting on a new one. one version has a recall.

http://forums.swiftech.com/viewtopic.php?f=16&t=3541&sid=17972d63f145f6ee3f5f8d5592d41b03

Good luck I contacted them by e-mail and phone about getting my replaced a week ago... No reply no call back mad.gif
Edited by We Gone - 7/25/16 at 6:41am
    
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post #12 of 16
Quote:
Originally Posted by doyll View Post

Quote:
Originally Posted by Lady Fitzgerald View Post

??? I subbed to learn more of how hubs like this work. The way I understand it, PWM fans receive constant 12v and the PWM signal from the MOBO (or a separate controller?) "tells" the fan to chop up the 12v (essentially, create a DC square wave of varying wave widths, depending on the speed wanted) to reduce the speed. As far as I know, fans connected to fan hubs share the same PWM signal from the MOBO without amplification. Supposedly, you can run up to eight fans off a single PWM signal source (generally, a MOBO header) without a problem. The fact that the Swiftech 8 fan PWM hub is so popular supports that.
I was hoping you knew more about it than I did. tongue.gif
Indeed, a single PWM fan header is usually able to control about 8-10 PWM fans (their internal control PCB), but not always. Some Corsair fans (think it was AF / SP fan series) are notorious for throwing hissy fits with more than 3-4 fans, sometime only 2 will work on same PWM control source.

What I'm trying to determine is why most PWM master controls will not work on more than 8-10 fans. I've been told it's not as easy as amplifying the PWM control signal from master controller. If this is true, then it's not a simple master control pulsing 5v or 3.5v to the fan slave control. So then how does it actually work?

Is power coming from fan to header? .thinking.gif Kinda like how does the TV / monitor know when you shoot at targets on the screen that it's a hit or a miss? tongue.gif I know the answer to that one .. a hint is is backwards. wink.gif

As far as I know, the only thing sent from a fan to the header is the rpm signal. As far as why the PWM signal can support only so many fans is, it appears the more you spread it out the weaker it becomes. If so, it would be like comparing the strength of water flow coming from one garden hose hooked up to a faucet to the flow coming from eight hoses connected to just the one faucet. How many fans you can control with one PWM signal also depends on the fans themselves; some require a stronger signal than others. As you mentioned earlier, certain Corsair fans do not play well with fan splitters/hubs and sometimes two are all you will get to work. I also suspect that some MOBOs may put out stronger PWM signals than others.

Btw, you are the Master; I'm merely an acolyte.
     
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post #13 of 16
Quote:
Originally Posted by Lady Fitzgerald View Post

As far as I know, the only thing sent from a fan to the header is the rpm signal. As far as why the PWM signal can support only so many fans is, it appears the more you spread it out the weaker it becomes. If so, it would be like comparing the strength of water flow coming from one garden hose hooked up to a faucet to the flow coming from eight hoses connected to just the one faucet. How many fans you can control with one PWM signal also depends on the fans themselves; some require a stronger signal than others. As you mentioned earlier, certain Corsair fans do not play well with fan splitters/hubs and sometimes two are all you will get to work. I also suspect that some MOBOs may put out stronger PWM signals than others.

Btw, you are the Master; I'm merely an acolyte.
I know that signal logic. But if that was the way it worked, a couple of linier amps on a 'Y' splitter would allow twice as many fans to be controlled .. yet nothing like that has been seen. That is why I wonder how it all works. thinking.gif
post #14 of 16
Thread Starter 
Quote:
Originally Posted by MaykelJCS View Post

So i got the Swiftech H320x2 for my i7-5820K, my Motherboard is the MSI X99A Gaming 9 ACK, my issues with it is that this unit is new and when i installed it to my rig and connect the PWM signal splitter to my CPU 4 pin headed just like the manual said i need to "although all my fan connectors in my MSI X99A Gaming 9 ACK are 4 pin haded" However i tried all the connectors in my mobo. My issues is that when i connect the fans to the PWM signal splitter the fan wont spin but if i connect the fans direct to the mobo thy all spin so is not my mobo, also the led in the CPU block wont turn on the one in the pump does turn on and change colors with the switch in the PWM signal splitter please help ive been searching everywhere and have found nothing Help! I need this splitter cause i have other stuff to connect there isnt much connectors, Also the tempetures as soon i turn on the PC goes to 59 to 60 thanks

Thank you
So i called the manufacturer of my motherboard as i rad on Swiftech website this " PWM capable connectors must necessarily be 4-pin, but not all 4-pin motherboard connectors implement or enable the PWM signal modulation by default. Please carefully consult your motherboard documentation in this respect" however all of my pins are 4 pins headed but my manufactures said that this motherboard doesn't implement PWM Modulation. So that makes me thinks that this is the issue im having, do you know how can i fi fix this help
post #15 of 16
Quote:
Originally Posted by MaykelJCS View Post

So i called the manufacturer of my motherboard as i rad on Swiftech website this " PWM capable connectors must necessarily be 4-pin, but not all 4-pin motherboard connectors implement or enable the PWM signal modulation by default. Please carefully consult your motherboard documentation in this respect" however all of my pins are 4 pins headed but my manufactures said that this motherboard doesn't implement PWM Modulation. So that makes me thinks that this is the issue im having, do you know how can i fi fix this help
Swiftech PWM hub has two PSU power leads. These are 12v power and ground. The go to all fan headers on the hub It also has 2 leads on a fan plug that go to a PWM fan header. These are PWM signal to fans and rpm signal from one fan to PWM fan header.

The Swiftech PWM hub should run all fans at 100% speed (12v power) if there is no PWM signal.

Sense your motherboard has no PWM signal, you do not have a source of PWM control. Only ways I know of to get one is to buy something like Aquaero 5 or Aquaero 6 fan controller. Aquaero 5 prices start at about 59,90 EUR for Aquaero 5 LT USB and go up to 179,90 EUR for Aquaero 6 XT

I know of no low cost PWM controller.
post #16 of 16
Thread Starter 
Ok! everybody thanks for all your help i was able to resolve the issue by replacing the Swiftech PWM signal splitter for a new one and that fixed it so apparently the unit that came alone with the Swiftech h320x2 was defective, but now i got a small issue, the LED on the waterblock doesnt turn on however the LED on the water pump they do turn on, change color, ect how can i fix the LED on the water pump help....
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