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Swiftech PWM signal splitter problem

post #1 of 16
Thread Starter 
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
post #2 of 16
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
Do you have the PSU power lead from Swiftech PWM hub to PSU plugged in? I think the new PWM hubs all have SATA connector, not Molex in below image
post #3 of 16
Thread Starter 
Yea all cable are connected to the psu and motherboard just like the manual recommends it, the sata, and the 4 pin connectors ect, i did everything the way im supposed to and tried many ways and still nothing thanks.....
Do you think if i buy the Swiftech PWM signal splitter will fix this also the LED lights from the water pump works just the one for the CPU block won turn on
Edited by MaykelJCS - 7/24/16 at 12:09pm
post #4 of 16
Then I don't know. Maybe you have a defective PWM hub, but that happens extremely rarely.

Try removing it completely, and re-installing it plugged to different PSU connector.

It's possible your PWM header is not actually sending a PWM signal, but instead using variable voltage, I would expect fans to run at full speed if this was the case. I pretty sure the Swiftech PWM hub has direct PWM splitting from it's fan plug to each hub header as well as direct power and ground from SATA to hub fan header.
post #5 of 16
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post #6 of 16
Quote:
Originally Posted by Lady Fitzgerald View Post

subbed
Kinda off subject, but how does PWM control work? Not the pulsed 12v to motor or the interrupted signal to PWM control in fan that send the 12v pulses to motor.
How does the signal work? Does mobo power the signal or does fan PWM PCB?
AM I making sense?
post #7 of 16
Quote:
Originally Posted by doyll View Post

Quote:
Originally Posted by Lady Fitzgerald View Post

subbed
Kinda off subject, but how does PWM control work? Not the pulsed 12v to motor or the interrupted signal to PWM control in fan that send the 12v pulses to motor.
How does the signal work? Does mobo power the signal or does fan PWM PCB?
AM I making sense?

??? 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.
     
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i7-5930K Haswell-e Asus X99-E WS/USB 3.1 Visiontek Radeon 7870 2GB with 6 miniDisplayports G-Skill Ripjaws 64GB (8x8GB) DDR4 2133 
Hard DriveHard DriveCoolingOS
Samsung 850 EVO 4TB SSDs Samsung 950 Pro 512GB m.2 SSD boot drive Noctua NH-D15S Cpu cooler Win 7 Ultimate 
PowerCaseMouseMouse Pad
Corsair AX760 Scratch built. Currently under construction at ... Logitech M525 El Cheapo Allsop hard plastic 
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i7-3930k ASUS P9X79 WS MSI R7850 Twin Frozr 2GD5/OC Radeon HD 7850 2GB... Monoprice 1x2 powered HDMI Splitter 
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Kingston HyperX 32GB (8 x 4GB) 240-Pin DDR3 SDR... 128GB Samsung 840 Pro SSD 4TB Samsung 850 EVO SSD 4TB Samsung 850 EVO SSD 
Hard DriveHard DriveOptical DriveCooling
4TB Samsung 850 EVO SSD 4TB Samsung 850 EVO SSD LG 12X BD-ROM 16X DVD-ROM 48X CD-ROM SATA Inter... COOLER MASTER GeminII S524 120mm Long Life Slee... 
OSMonitorMonitorKeyboard
Windows 7 Ultimate 3 x Asus VG248QE Vizio VO320E 32" TV Logitech G510s 
PowerCaseMouseAudio
Corsair HX750W Antec Two Hundred v2 Logitech M525 with Unifying Receiving Corsair SP2500 2.1 Speakers 
AudioOtherOtherOther
ASUS Xonar Essence STX Virtual 7.1 Channels 24-... LSI 9211-8i HBA card HooToo® HT-CR001 3.5" PCI-E to USB 3.0 Multi-in... StarTech HSB220SAT25B 2 Drive 2.5in Trayless Ho... 
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CPUMotherboardGraphicsRAM
i7-5930K Haswell-e Asus X99-E WS/USB 3.1 Visiontek Radeon 7870 2GB with 6 miniDisplayports G-Skill Ripjaws 64GB (8x8GB) DDR4 2133 
Hard DriveHard DriveCoolingOS
Samsung 850 EVO 4TB SSDs Samsung 950 Pro 512GB m.2 SSD boot drive Noctua NH-D15S Cpu cooler Win 7 Ultimate 
PowerCaseMouseMouse Pad
Corsair AX760 Scratch built. Currently under construction at ... Logitech M525 El Cheapo Allsop hard plastic 
CPUMotherboardGraphicsGraphics
i7-3930k ASUS P9X79 WS MSI R7850 Twin Frozr 2GD5/OC Radeon HD 7850 2GB... Monoprice 1x2 powered HDMI Splitter 
RAMHard DriveHard DriveHard Drive
Kingston HyperX 32GB (8 x 4GB) 240-Pin DDR3 SDR... 128GB Samsung 840 Pro SSD 4TB Samsung 850 EVO SSD 4TB Samsung 850 EVO SSD 
Hard DriveHard DriveOptical DriveCooling
4TB Samsung 850 EVO SSD 4TB Samsung 850 EVO SSD LG 12X BD-ROM 16X DVD-ROM 48X CD-ROM SATA Inter... COOLER MASTER GeminII S524 120mm Long Life Slee... 
OSMonitorMonitorKeyboard
Windows 7 Ultimate 3 x Asus VG248QE Vizio VO320E 32" TV Logitech G510s 
PowerCaseMouseAudio
Corsair HX750W Antec Two Hundred v2 Logitech M525 with Unifying Receiving Corsair SP2500 2.1 Speakers 
AudioOtherOtherOther
ASUS Xonar Essence STX Virtual 7.1 Channels 24-... LSI 9211-8i HBA card HooToo® HT-CR001 3.5" PCI-E to USB 3.0 Multi-in... StarTech HSB220SAT25B 2 Drive 2.5in Trayless Ho... 
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post #8 of 16
Do you have a choice on how the fan headers on the motherboard operate? On the asus boards you can select auto/PWM/DC. You have to select PWM in order for these swiftech splitters to operate correctly.

Also, I suspect you have a defective switch, as the default mode for most motherboards is DC, which would make all of the fans on the splitter run at full speed.

Edit - Something else I just remembered. Which header are you connecting the splitter to? Try connecting it to the main cpu header. Some motherboards only have the cpu header as PWM and the rest are DC only, even though they're all 4 pin.
Edited by axiumone - 7/25/16 at 4:24am
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Fused III
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post #9 of 16
If the splitter is not receiving a pwm signal, everything plugged into it goes to full speed. Try plugging everything in except for the 4 pin going to the cpu header. If the fans don't go full speed, you have a power issue.
post #10 of 16
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
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