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Freitag, 10. Mai 2013, 04:14
If you have a fan controller that doesn’t use PWM, you won’t run into this issue, so no, not related.Thanks for the speedy reply guys, but that is how it was at default, power controlled. Tried it with RPM controlled as well with no benefit, including setting a minimum voltage with "hold minimum power ticked"
Just read the review of the AP182 here
The reviewer had some problems with his AP182s and a fan controller, causing squealing. He was using PWM however, I am not
Heres' the interesting bit from the review
"The FC5V2 uses pulse-width modulation (PWM), and at 70% or lower duty cycle the AP182 made a terrible squealing noise and ceased to report an accurate rpm. I tried remedying this by connecting the shorting loop, but that also had the same effect. Believing that the fan might be faulty I used the included rheostat controller which worked just fine. I asked Tony at SilverStone about this issue and he said that the AP182’s fan control IC dynamically adjusts its frequency to maintain a certain power draw. He speculated that the IC was increasing its operating frequency very high to compensate for the reduced PWM duty cycle coming from the FC5V2, which created the tachometer malfunction and terrible noise. Ultimately, I had to use the included rheostat controller for macro adjustments of the fan speed and could use my FC5V2 for fine adjustment only. If you have a fan controller that doesn’t use PWM, you won’t run into this issue"
I don't get the squealing! and have tried with and without the shorting loop. Any chance the issue is related to this?
in the FAN sheet, what happens if you make min voltage to 5v ( rated minimum) and select hold minimum power?
what happens if you make maximum voltage 6v????
if you can change there, then you would need to look at the Control sheet to see how is is being controlled.
Mittwoch, 15. Mai 2013, 12:27
Right, I have tried the settings you advised, but unfortunately they do not resolve the issue. With further testing I can see that anything less the 6.5v and the fan stops, which gives me about 1250 rpm at a minimum. The current shown for each fan at this setting is wildly fluctuating between 0.11a all the way to 0.94a. Tried it with both RPM and Power controlled. Looks like I will have to message Silverstone and ask them about it or just use the rheostat provided 
Freitag, 17. Mai 2013, 01:58
]I am currently (for demonstration purposes) using a curve controller with the first two ap182 fans, rpm controlled. I have set a limit on the hold minimum power to 6.6v to keep them running. I have tried using a 'constant value' of 100% and using the fan power sliders and can confirm that the fans simply stop when the voltage is less than 6.6v. As you can see in the picture, I have 3 ap182 fans. The first two are running from the curve controller with a 'Hold minimum power' of 6.6v and so are running at the lowest speed I can get them to (around 1270rpm) whilst the 3rd ap182 fan is running on a 'constant value' set to 100% Now when I reduce the voltage down from 12v on the 3rd fan, when I get to 6.5v the fan simply stops. Here's the screenies.
Sonntag, 19. Mai 2013, 00:48
Thanks for the suggestions guys!
EnigmaG, I have tried the settings with each of the 3 ap182 fans in turn, and they all do the same thing on any of the four channels
Pilo, I have the waterblock for my aquaero attached with the supplied thermal pad, integrated into my loop. I created a graph to monitor the temperature of fan amp 3. At 6.6v fan amp 3 is settling at about 37.5 degrees. Fan amp 1+2 runs at about 45 degrees with two ap182s running at 6.6v which I think leaves me plenty of headroom, does it not?
This is what happens to the fan amp temperature when I lower the voltage to 6.5
And this is the graph of power fluctuation I am getting when trying to run the fans using a controller curve, with a minimum fan power of 5v rpm controlled (from 23:32 onwards)
I don't have a voltmeter, but I will try a fan with the supplied controller tomorrow and see if I can achieve a lower RPM.
Again, thanks for your time!
EnigmaG, I have tried the settings with each of the 3 ap182 fans in turn, and they all do the same thing on any of the four channels
Pilo, I have the waterblock for my aquaero attached with the supplied thermal pad, integrated into my loop. I created a graph to monitor the temperature of fan amp 3. At 6.6v fan amp 3 is settling at about 37.5 degrees. Fan amp 1+2 runs at about 45 degrees with two ap182s running at 6.6v which I think leaves me plenty of headroom, does it not?
This is what happens to the fan amp temperature when I lower the voltage to 6.5
And this is the graph of power fluctuation I am getting when trying to run the fans using a controller curve, with a minimum fan power of 5v rpm controlled (from 23:32 onwards)
I don't have a voltmeter, but I will try a fan with the supplied controller tomorrow and see if I can achieve a lower RPM.
Again, thanks for your time!
Montag, 20. Mai 2013, 22:15
Pilo, when the setting is on power controlled, the fan just stops at anything less than 6.6v which means I can never get the fan slower than around 1270rpm The fan specs should allow for 500rpm@ 5v
I have tried it with and without the shorting loops with the same result.
Today I attached the supplied fan controller to the third fan, and connected the rpm wire to the aquaero 5 and it does indeed allow the fan to go at 500rpm, here's proof! I don't know what voltage this is unfortunately
Is this something Shoggy needs to look at and test?
I have tried it with and without the shorting loops with the same result.
Today I attached the supplied fan controller to the third fan, and connected the rpm wire to the aquaero 5 and it does indeed allow the fan to go at 500rpm, here's proof! I don't know what voltage this is unfortunately
Is this something Shoggy needs to look at and test?
Dienstag, 19. November 2013, 17:21
I bump this thread bc I have exactly the same problem. In my case, I can get a bit lower, but at around 6.2V my fans also just stop. Has anybody found a solution for this meanwhile, or are these fans just incompatible?Right, I have tried the settings you advised, but unfortunately they do not resolve the issue. With further testing I can see that anything less the 6.5v and the fan stops, which gives me about 1250 rpm at a minimum. The current shown for each fan at this setting is wildly fluctuating between 0.11a all the way to 0.94a. Tried it with both RPM and Power controlled. Looks like I will have to message Silverstone and ask them about it or just use the rheostat provided
Mittwoch, 20. November 2013, 15:58
You are right - this was just confirmed with Silverstone. So, do not buy this fan if you actually want to control it by ANY 3rd party controller.There is noting to get this fixed since the fan itself is the problem.
So I had to revert to the original AP181 - and at least they seem to work as expected with the aquaero.
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