Overclock.net › Forums › Cooling › Water Cooling › EK-D5 PWM won't go over 2000 Rpm with speed fan
New Posts  All Forums:Forum Nav:

EK-D5 PWM won't go over 2000 Rpm with speed fan

post #1 of 10
Thread Starter 
I have a ek-d5 PWM pump (bought from the original website) I connect the PWM signal to the system fan on the motherboard. When I open speedfan and set the 100%(all of them) and the rpm never goes over 2000. I also replaced the pump and the new one has the same issue.

Could it be my mobo doesn't send the right PWM signal?

If I leave the PWM unconnected will the pump go at full speed? (I tried this already and there is no noticeable difference)

Link to EK website;
https://shop.ekwb.com/ek-d5-pwm-motor-12v-dc-pwm-pump-motor

Thanks!

Edit:
It appears I cant control the RPM at all. It wont change when I put it to 0, 20,...

Tried MSI command center, wont work also

The motherboard is able to control a PWM fan
Edited by dr_serious - 1/24/16 at 4:12am
Rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4790K MSI Z97-G45 Gaming 2x 980 GTX  16 GB 
Hard DriveCoolingOSMonitor
Samsung SSD 840 Series Pro 256GB EK Watercooling Windows 7 2 x LG-34UM95-P 1x W25753VC 
PowerOtherOtherOther
Corsair RM850 Cooling: 8x Corsair Air Series SP120 PWM High P... Cooling: 2x radiator 240mm Cooling: EK Water Blocks EK-D5 PWM Pump 
OtherOther
Cooling: 2x GTX 980 EK Water Blocks - WaterBloc... Cooling: CPU EK Water Blocks EK-Supremacy EVO -... 
  hide details  
Reply
Rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4790K MSI Z97-G45 Gaming 2x 980 GTX  16 GB 
Hard DriveCoolingOSMonitor
Samsung SSD 840 Series Pro 256GB EK Watercooling Windows 7 2 x LG-34UM95-P 1x W25753VC 
PowerOtherOtherOther
Corsair RM850 Cooling: 8x Corsair Air Series SP120 PWM High P... Cooling: 2x radiator 240mm Cooling: EK Water Blocks EK-D5 PWM Pump 
OtherOther
Cooling: 2x GTX 980 EK Water Blocks - WaterBloc... Cooling: CPU EK Water Blocks EK-Supremacy EVO -... 
  hide details  
Reply
post #2 of 10
it is a AMP restriction on the fan headers for the motherboard, most motherboards have a 1 Amp or less restriction on all the fan headers, I have seen motherboards that support a 3 Amp fan header for the CPU fan, and they advertise it as being able to handle a water pump.

it this powered by the Molex connection, and only supposed to be controlled by a fan header?

try connection the pump to another power line off the power supply, or even another power supply all together, it could be that the power supply you are using is maxed out on what it can provide amp wise.
Edited by toolmaker03 - 1/24/16 at 4:46am
post #3 of 10
Quote:
Originally Posted by dr_serious View Post

I have a ek-d5 PWM pump (bought from the original website) I connect the PWM signal to the system fan on the motherboard. When I open speedfan and set the 100%(all of them) and the rpm never goes over 2000. I also replaced the pump and the new one has the same issue.

Could it be my mobo doesn't send the right PWM signal?

If I leave the PWM unconnected will the pump go at full speed? (I tried this already and there is no noticeable difference)

Link to EK website;
https://shop.ekwb.com/ek-d5-pwm-motor-12v-dc-pwm-pump-motor

Thanks!

Edit:
It appears I cant control the RPM at all. It wont change when I put it to 0, 20,...

Tried MSI command center, wont work also

The motherboard is able to control a PWM fan

This is a pretty simple answer. The D5 PWM requires a PWM signal to control the pump, and MSI system fan headers are not PWM. Yes, they have four pins, but that does not make them actually PWM. They are voltage regulated, and this will not control a PWM pump. What you are doing now is the same as not having it plugged in, which defaults it to a 60% signal (signal, not speed), which will run it at ~2000rpm.

I don't know which MSI board you have since you haven't specified, but on most of the newer MSI only CPU_1 is PWM. Plug the pump in there and you will have control, as well as being able to get speeds higher than 2000 rpm..
Edited by ciarlatano - 1/24/16 at 5:19am
post #4 of 10
Thread Starter 
Quote:
Originally Posted by toolmaker03 View Post

it is a AMP restriction on the fan headers for the motherboard, most motherboards have a 1 Amp or less restriction on all the fan headers, I have seen motherboards that support a 3 Amp fan header for the CPU fan, and they advertise it as being able to handle a water pump.

it this powered by the Molex connection, and only supposed to be controlled by a fan header?

try connection the pump to another power line off the power supply, or even another power supply all together, it could be that the power supply you are using is maxed out on what it can provide amp wise.

Tried 2 different power sources. It doesn't go over 200mA and the rpm is still not changeable. Both power sources can deliver more then 10A.
Rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4790K MSI Z97-G45 Gaming 2x 980 GTX  16 GB 
Hard DriveCoolingOSMonitor
Samsung SSD 840 Series Pro 256GB EK Watercooling Windows 7 2 x LG-34UM95-P 1x W25753VC 
PowerOtherOtherOther
Corsair RM850 Cooling: 8x Corsair Air Series SP120 PWM High P... Cooling: 2x radiator 240mm Cooling: EK Water Blocks EK-D5 PWM Pump 
OtherOther
Cooling: 2x GTX 980 EK Water Blocks - WaterBloc... Cooling: CPU EK Water Blocks EK-Supremacy EVO -... 
  hide details  
Reply
Rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4790K MSI Z97-G45 Gaming 2x 980 GTX  16 GB 
Hard DriveCoolingOSMonitor
Samsung SSD 840 Series Pro 256GB EK Watercooling Windows 7 2 x LG-34UM95-P 1x W25753VC 
PowerOtherOtherOther
Corsair RM850 Cooling: 8x Corsair Air Series SP120 PWM High P... Cooling: 2x radiator 240mm Cooling: EK Water Blocks EK-D5 PWM Pump 
OtherOther
Cooling: 2x GTX 980 EK Water Blocks - WaterBloc... Cooling: CPU EK Water Blocks EK-Supremacy EVO -... 
  hide details  
Reply
post #5 of 10
Thread Starter 
Quote:
Originally Posted by ciarlatano View Post

This is a pretty simple answer. The D5 PWM requires a PWM signal to control the pump, and MSI system fan headers are not PWM. Yes, they have four pins, but that does not make them actually PWM. They are voltage regulated, and this will not control a PWM pump. What you are doing now is the same as not having it plugged in, which defaults it to a 60% signal (signal, not speed), which will run it at ~2000rpm.

I don't know which MSI board you have since you haven't specified, but on most of the newer MSI only CPU_1 is PWM. Plug the pump in there and you will have control, as well as being able to get speeds higher than 2000 rpm..


The mother board is a Z97-G45 gaming from MSI. I will give it a try
Rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4790K MSI Z97-G45 Gaming 2x 980 GTX  16 GB 
Hard DriveCoolingOSMonitor
Samsung SSD 840 Series Pro 256GB EK Watercooling Windows 7 2 x LG-34UM95-P 1x W25753VC 
PowerOtherOtherOther
Corsair RM850 Cooling: 8x Corsair Air Series SP120 PWM High P... Cooling: 2x radiator 240mm Cooling: EK Water Blocks EK-D5 PWM Pump 
OtherOther
Cooling: 2x GTX 980 EK Water Blocks - WaterBloc... Cooling: CPU EK Water Blocks EK-Supremacy EVO -... 
  hide details  
Reply
Rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4790K MSI Z97-G45 Gaming 2x 980 GTX  16 GB 
Hard DriveCoolingOSMonitor
Samsung SSD 840 Series Pro 256GB EK Watercooling Windows 7 2 x LG-34UM95-P 1x W25753VC 
PowerOtherOtherOther
Corsair RM850 Cooling: 8x Corsair Air Series SP120 PWM High P... Cooling: 2x radiator 240mm Cooling: EK Water Blocks EK-D5 PWM Pump 
OtherOther
Cooling: 2x GTX 980 EK Water Blocks - WaterBloc... Cooling: CPU EK Water Blocks EK-Supremacy EVO -... 
  hide details  
Reply
post #6 of 10
Quote:
Originally Posted by dr_serious View Post

Tried 2 different power sources. It doesn't go over 200mA and the rpm is still not changeable. Both power sources can deliver more then 10A.

Your issue has nothing to do with the power source. That suggestion was kind of.........misguided.

See my post above and try it.
post #7 of 10
Quote:
Originally Posted by ciarlatano View Post

This is a pretty simple answer. The D5 PWM requires a PWM signal to control the pump, and MSI system fan headers are not PWM. Yes, they have four pins, but that does not make them actually PWM. They are voltage regulated, and this will not control a PWM pump. What you are doing now is the same as not having it plugged in, which defaults it to a 60% signal (signal, not speed), which will run it at ~2000rpm.

I don't know which MSI board you have since you haven't specified, but on most of the newer MSI only CPU_1 is PWM. Plug the pump in there and you will have control, as well as being able to get speeds higher than 2000 rpm..

that is a very good point as a voltage regulation circuit is much cheaper to design than PWM, and most fan controllers do the same thing, yea they have 4 pins, but are still voltage regulating the Fans.

have never considered that motherboards would be designed the same way.

thanks for the info, I learned something today.
post #8 of 10
Quote:
Originally Posted by dr_serious View Post

The mother board is a Z97-G45 gaming from MSI. I will give it a try

Just looked at the manual - check page 1-21. CPU_1 and CPU_2 are listed as PWM, SYS headers have a dead 4th pin with no PWM signal. That is your problem right there.

I should add that I would be a little skeptical of CPU_2. I have used a Z97 MSI board that has CPU_1 PWM controlled, and CPU_2 voltage regulated.

Quote:
Originally Posted by toolmaker03 View Post

that is a very good point as a voltage regulation circuit is much cheaper to design than PWM, and most fan controllers do the same thing, yea they have 4 pins, but are still voltage regulating the Fans.

have never considered that motherboards would be designed the same way.

thanks for the info, I learned something today.

ASUS was the big offender with this. They actually labeled their headers as PWM, yet clearly showed in the pin out charts that there was no PWM at all - the Z97 and X99 boards are actually PWM. I wasted a lot of time trying to get a Z87 Sabertooth to do what they said it could do, and what their support assured me it could.
Edited by ciarlatano - 1/24/16 at 5:33am
post #9 of 10
Thread Starter 
Quote:
Originally Posted by ciarlatano View Post

Just looked at the manual - check page 1-21. CPU_1 and CPU_2 are listed as PWM, SYS headers have a dead 4th pin with no PWM signal. That is your problem right there.

I should add that I would be a little skeptical of CPU_2. I have used a Z97 MSI board that has CPU_1 PWM controlled, and CPU_2 voltage regulated.
ASUS was the big offender with this. They actually labeled their headers as PWM, yet clearly showed in the pin out charts that there was no PWM at all - the Z97 and X99 boards are actually PWM. I wasted a lot of time trying to get a Z87 Sabertooth to do what they said it could do, and what their support assured me it could.


It works! thanks a lot!
Rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4790K MSI Z97-G45 Gaming 2x 980 GTX  16 GB 
Hard DriveCoolingOSMonitor
Samsung SSD 840 Series Pro 256GB EK Watercooling Windows 7 2 x LG-34UM95-P 1x W25753VC 
PowerOtherOtherOther
Corsair RM850 Cooling: 8x Corsair Air Series SP120 PWM High P... Cooling: 2x radiator 240mm Cooling: EK Water Blocks EK-D5 PWM Pump 
OtherOther
Cooling: 2x GTX 980 EK Water Blocks - WaterBloc... Cooling: CPU EK Water Blocks EK-Supremacy EVO -... 
  hide details  
Reply
Rig
(14 items)
 
  
CPUMotherboardGraphicsRAM
i7 4790K MSI Z97-G45 Gaming 2x 980 GTX  16 GB 
Hard DriveCoolingOSMonitor
Samsung SSD 840 Series Pro 256GB EK Watercooling Windows 7 2 x LG-34UM95-P 1x W25753VC 
PowerOtherOtherOther
Corsair RM850 Cooling: 8x Corsair Air Series SP120 PWM High P... Cooling: 2x radiator 240mm Cooling: EK Water Blocks EK-D5 PWM Pump 
OtherOther
Cooling: 2x GTX 980 EK Water Blocks - WaterBloc... Cooling: CPU EK Water Blocks EK-Supremacy EVO -... 
  hide details  
Reply
post #10 of 10
Quote:
Originally Posted by toolmaker03 View Post

that is a very good point as a voltage regulation circuit is much cheaper to design than PWM, and most fan controllers do the same thing, yea they have 4 pins, but are still voltage regulating the Fans.

have never considered that motherboards would be designed the same way.

thanks for the info, I learned something today.
Quote:
Originally Posted by dr_serious View Post

It works! thanks a lot!

Glad it was that simple.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Water Cooling
Overclock.net › Forums › Cooling › Water Cooling › EK-D5 PWM won't go over 2000 Rpm with speed fan