Case Fans and PWM Signal

[x1222]

In general, does setting the PWM signal to 0V or 0% duty cycle turn off the Fans or does it set it to a minimum speed?

 

[Ayah]

It turns it off.

 

[EarthwormJim]

There's no guarantee what will happen since the PWM fan spec doesn't specify how fans should respond below 20% duty cycle.

Some fans will stick to a minimum speed setting, other fans will shut off.

 

[Ayah]

0% duty cycle on PWM means no voltage pulse = 0V RMS, and no voltage = no power.

 

[EarthwormJim]

0% duty cycle on PWM means no voltage pulse = 0V RMS, and no voltage = no power.

PWM for fans does not actually power the fans. It is simply a control signal.

 

[Ayah]

PWM for fans does not actually power the fans. It is simply a control signal.

yeah, just realized that. forgot that normal pwm dc is just 2 pins + possibly an rpm while computer pwm is 2 pins + rpm + pwm

I'm a moron

 

[ik33_mao]

Hi, I'm kind of new at this, and Eng is not my first language. So please excuse my English.

I would like to know if its possible to control/moniter/see ( the RPMs ) from both places such as from BIOS/Fan Controller/Thermal Radar, and/or from the Fan controller at the same time. Because if i do not get the NZXT Lxe my desktop is under the table and it is difficult for me to reach down or look at the temps, i rather have it on my monitor in the software. I want to be able to moniter the Rpm of the fan on both my pc and the fan controller display.

 

[ik33_mao]

this is my build
CPU: I7 3770k Ivy
CPU Cooler: Coolermaster Hyper 212 EVO 2 Fans
Case Fans: 2x 230mm 2x120mm
MB: Asus Z77 Sabertooth
PSU: ThermalTake TR2 RX 750W
VGA: Gigabyte GTX 650 Ti Boost
RAM: 2 x 8 GB DDR3
HDD: 1 HDD 1TB WD

Planning to add Fan controller NZXT Sentry LXE + 3 PCI Slot Fans (3x90mm)

Thank you very much

 

[T_Yamamoto]

PCI slot fans are useless IMHO. And the NZXT fan controller kinda sucks (or so I've heard)

 

[Face2Face]

PCI slot fans are useless IMHO. And the NZXT fan controller kinda sucks (or so I've heard)

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