One fan stops and the display goes dark on mx610

orome · Post by **orome** » Wed Jul 12, 2006 8:57 am

I have set up my mx610 to regulate three 12V, 120 mm fans. I use the default 12v setting and the display is powered by a floppy cable. I set up the unit to increase/decrease the pwm of my fans by using six events (up/down for each fan). My problem is that after decreasing the pwm to about 80-90%, one of my fans stops and the display goes dark. the other fan keeps running and I can't get the display to start again without re-booting. When I do, the display works again and everything is fine...until I try to slow the fans down too much. Initially, I set the MX to reduce in 5% increments, thinking that setting it at 10-15% was getting the fans to "tank out" too quickly. I also tried 1% increments in LCDC, but that produced the same results, with one fan stopping at about 90%. I haven't been able to get the fans to run in the lower 80's without having one stop and the display go dark.

Am I unrealistic in expecting to be able to run these (noisy) fans at about 50%? What am I missing? Thank you.

Jon · Post by **Jon** » Wed Jul 12, 2006 10:25 am

Hi orome,

It seems that the fan places a lot of stress on the display when it is not running at full speed.

We will have to look into this much closer. Thank you for bringing this to our attention.

Backburn · Post by **Backburn** » Tue Nov 07, 2006 10:21 am

I am having this same problem. This makes the MX6 utterly useless to me, as a fan contoller that is. That was the major reason to have an MX6 to begin with. A solution would be much appreciated.

Regards

Jon · Post by **Jon** » Tue Nov 07, 2006 2:41 pm

Backburn,

What is the make/model of the fans that you are trying to use?

--
Jon

Backburn · Post by **Backburn** » Fri Nov 10, 2006 10:20 am

Jon,

CREAIR
120mm
DFB122512H

A total of three.
Each is 12v @ 4.8W = 0.4A

Backburn · Post by **Backburn** » Fri Nov 10, 2006 10:27 am

Also, let me add that these fans work perfectly on two other MX210's we have in the shop. (At any speed.)

Additionally, the MX6 does the same thing when it is set to auto, temperature based (digibus). The fans spin down to about 70% (good) and then the display goes black (bad), fans spin back up to 100% (better than 0%

and the display becomes unresponsive.

Raquel · Post by **Raquel** » Mon Nov 13, 2006 10:18 am

Hi Backburn,

I wonder, if you try your MX610 to the system where the other MX210's are working perfectly, to see if maybe there is something different in your system, say from power supply to some settings on LCDC.

Best Regards,

Jon · Post by **Jon** » Mon Nov 13, 2006 11:55 am

Also, let me add that these fans work perfectly on two other MX210's we have in the shop. (At any speed.)

Considering the fact that the MX6 uses almost identically the same board as the MX2, I would have to conclude that your MX6 is faulty. Unless there is something to do with the power supply as Raquel was curious about.

I would like to take a look at what's going on with this display. Would it be possible for you to send us the display and the fans that you are having the problem with and we'll run some tests here and find out what is wrong.

My email address is jklassen@matrixorbital.ca, if you give me an email and let me know it was from this post, I will give you our shipping information.

--
Jon