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Mittwoch, 11. Januar 2017, 21:55
My system is air cooled.I am not sure I fully understand the issue, but let me make a couple comments.
Is the system water cooled or air cooled?
- The curve controller you show appears to be working as you have it set
it starts at 45C and the source is at 38C, so the controller is not active
but you are seeing the 2.1V minimum set to the fan
- The minimum you are applying to the fan IS a minimum
meaning the fan will not drop below that value
but can run above it
About your first comment: you are right in everything except "controller is not active". Controller at temperature below minimum is setting voltage value corresponding to the minimum temperature point in curve line. In my case, voltage at temperature 38C is corresponding to 45C and voltage must be 17,5% = 2.1V. And it is 2.1V as must be.
About your second comment: you are right.
All work fine when minimum power is zero, and fan is "Power controlled"
At 38C, the voltage is 2.1V (RPM=330), and when I set minimum power to 2.1V, the voltage grows to 3.8V as shown in second picture. After setting "minimum power" to zero, the voltage decreasing to its normal 2.1V.
Also, when I set fan to "speed controlled" where the MINIMUM RPM is set to 300, the RPM grows to 570. After setting fan to "power controlled", the RPM decreasing to its normal 330.
Donnerstag, 12. Januar 2017, 00:48
About your first comment: you are right in everything except "controller is not active". Controller at temperature below minimum is setting voltage value corresponding to the minimum temperature point in curve line. In my case, voltage at temperature 38C is corresponding to 45C and voltage must be 17,5% = 2.1V. And it is 2.1V as must be.
When I said the controller was not active, I meant it was sitting at zero, which corresponds to the Minimum Power you specified in the fan profile.
ALL source temperatures below the specified Curve's low end 45C of your controller, will have the same impact on the controller, zero or the minimum you set in the fan profile.
That is what I see the controller doing in the clip you posted, so I believe it is working as designed.
As to the all the calculations you are doing, I don't understand them and will leave that to someone more versed than I.
Donnerstag, 12. Januar 2017, 04:48
point in curve line. In my case, voltage at temperature 38C is corresponding to 45C and voltage must be 17,5% = 2.1V. And it is 2.1V as must be.
About your second comment: you are right.
All work fine when minimum power is zero, and fan is "Power controlled"
At 38C, the voltage is 2.1V (RPM=330), and when I set minimum power to 2.1V, the voltage grows to 3.8V as shown in second picture. After setting "minimum power" to zero, the voltage decreasing to its normal 2.1V.
No 17% = 2,1 Volt + 17% von 9,9 [12-2,1] (1,683) 3,783 Volt is correct.
% is always of the control range.
Samstag, 14. Januar 2017, 08:31
On previous firmware, nothing was changed when I set "minimum power/rmp" below current value. And after that, the current rmp/power can not be smaller than the minimum value. It works logically and I always enjoyed these settings.
Now in new firmware I create controller with "preset value" and set power to 50% ( 6V ). The fan speed is 1135 rpm.
When I set minimum power to 33% ( 4V ), the voltage grows from 6V to 8V ( from 1135 to 1417 rpm )
When I set minimum speed to 600 rpm, the rpm grows from 1135 to 1279 rpm ( from 6V to 7V )
Option "hold minimum power" is always enabled even checkbox is clear.
I do not understand how it works, and what is now means "minimum" power/rpm in CURRENT firmware.
Now in new firmware I create controller with "preset value" and set power to 50% ( 6V ). The fan speed is 1135 rpm.
When I set minimum power to 33% ( 4V ), the voltage grows from 6V to 8V ( from 1135 to 1417 rpm )
When I set minimum speed to 600 rpm, the rpm grows from 1135 to 1279 rpm ( from 6V to 7V )
Option "hold minimum power" is always enabled even checkbox is clear.
I do not understand how it works, and what is now means "minimum" power/rpm in CURRENT firmware.
Samstag, 14. Januar 2017, 09:46
Now in new firmware I create controller with "preset value" and set power to 50% ( 6V ). The fan speed is 1135 rpm.
0-12 frame 50% =6 Volt
When I set minimum power to 33% ( 4V ), the voltage grows from 6V to 8V ( from 1135 to 1417 rpm )
4-12 frame 50% =4 + 4 Volt min is 8 Volt
When I set minimum speed to 600 rpm, the rpm grows from 1135 to 1279 rpm ( from 6V to 7V )
600-2000 1/min frame 50% =700 + 600 1/min min is 1300 1/min
This has always been this way.
Samstag, 14. Januar 2017, 21:03
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