Phanteks Luxe PWM hub

D1craig

D1craig

D1craig

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i have this motherboard - Asus P8Z68 LX-V.

the manual for the hub says i need to plug the hub into my CPU_FAN header as it is the main source of PWM. i did do this and it gave CPU_FAN errors on boot, i can ignore the monitoring but still it would be nice to be able to monitor the fan speeds and this header didnt let me do that either. i cant do this as it means i have to have my radiator fan plugged into it.

so i have my hub plugged into CHA_FAN1 as that is suppose to offer PWM aswell (just not as good).

i am not noticing any difference in the chassis fan rpm's noise wise. i have set them to the lowest and the highest. they sound exactly the same. i think they are on full rpm. also my motherboard cant read any rpm from the hub, i understand it will only be accurate for one of the fans plugged in and that would be fine as i would atleast see the rpm changed with my settings.

i have looked in the BIOS for setting like; DC, PWM etc on the CHA_FAN1 but the only options it gives me is the different modes you can pick ie. auto, manual, silent and turbo etc.

can anyone offer some advice please? the fan noise is not unbearable but it is loud enough to hear.
 
If you've tried setting fan control to manual and changing the values therein I'd guess that there's something wrong with your hub as the tach line should allow the motherboard to detect the fan speed. If the fans are running at max and the cable is connected between the hub and the motherboard then there should be nothing to stop the signal getting through.

What does the motherboard report for the speed? 0? or some stupidly high fluctuating value?
 
Also, only the cpu fan header on Asus boards is PWM, have you tried using ai suites fan expert software to control fan speed?
 
The readings say 0rpm.

Finding info about the headers is pretty hard lol. I'm sure I saw someone say the cha fan headers are reduced pwm function.

But yea the CPU fan header is the only one showing anything and letting me change speeds.
 
D1craig said:
The readings say 0rpm.

Finding info about the headers is pretty hard lol. I'm sure I saw someone say the cha fan headers are reduced pwm function.

But yea the CPU fan header is the only one showing anything and letting me change speeds.
Click to expand...

Ya on the Z87/97 boards all the system fan headers are voltage regulated and not pwm,tis a PITA
 
Does the hub on the Luxe require additional power? I have the max amount of fans on mine (Enthoo Primo) and it needs the sata / molex connection to get them to power up ok and remove the CPU Fan error.
 
Have been setting mine up today. Didn't want to put it on my cpu header as i have my air cooler plugged into it and the only other 4 pin header is for sys_fan2 which isn't true pwm on my board. The manual states
Connecting the 4-pin to CPU_FAN
For full PWM functionality, Phanteks’ PWM hub requires users to connect the 4-pin connector to the “CPU_Fan” connector of the motherboard, because all motherboard manufacturers implements a PWM signal modulation on this connector. Connect the SATA 12V power to power the PWM hub. Not all motherboards have their CPU_Fan connector set on PWM signal modulation by default. Please consult your motherboard documentation for this matter.

Connecting the 4-pin to other 4-pin header (besides the CPU_Fan)
Other 4-pin connectors can be found on modern motherboards besides the “CPU_Fan” connector (e.g. “CPU_Fan2”, “CHA_Fan”, “OPT_Fan”), however not all motherboard manufacturers implement a true PWM signal modulation onto these connectors. These type of 4-pin connectors modulate the RPM by voltage, which has a smaller control range compared to modulation by true PWM signal.

The 12V SATA power cable can not be used to power the PWM hub if
connecting to these types of 4-pin connectors, due to the interference
with the RPM regulation by voltage (resulting in the fans running on
full RPM). The PWM hub will draw its power from the 4-pin connector,
which is limited to a total device consuming 30W in total.
Click to expand...

so all i did was plug it into the mobo header and left the sata connector unplugged.HWMonitor is reporting the fan speed as Min 618 rpm + Max 775 rpm, so it is changing automatically with just the header plugged in (dunno if i can change any settings in bios for that header or not, or if i can have better control some other way though as i'm honestly not that savvy :o)
 
well i unplgugged the big 12v sata cable form the power on my hub and it seems to work now :)

i dont get any info for it but i can defo feel and hear the difference.
i didnt unplug it last time i looked as i recall thinking it was something to do with the LED lights, i was obviously mistaken.
 
If it's working without the Sata power cable it's working as a 3-pin variable voltage splitter with variable voltage power being sent from motherboard to fans.
 
The hub is only capable of sending the speed signal of one fan. The motherboard header is only capable of reading one fan signal. To see other fans speed would require the signal wire from fan to be removed from fan plug and put in another plug, then plug that plug into another header on the motherboard or some other speed sensing device.
Like in the wiring diagram on the right. Often the rpm lead is green, not yellow.
StandardYsplitterpin-outw-2ndrpm_zps17299b15.jpg
 
I thought the hub would just use the speed of the fan in slot 1 or something. Tbh I'm not that fussed it would just be nice to see what the speed difference was/is. I know it's working it just doesn't display any info for speed.

I understand that the fan hub (which has 3 fans plugged into it) will only display the speed of one of them. Or that's how I thought it would work.
 
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