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Fan Speed not matching Curve Controller

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Javeeik

Newbie

Posts: 4

Fan Speed not matching Curve Controller

Monday, November 30th 2020, 2:33pm

Hi all,

I cant seem to find anyone else covering this, if its in the German language section sorry!

I was relatively happy as the fans seem to loosely follow my fan curve and ramped up when I wanted (ish), however they seemed to be hitting high RPM a little quicker than i would have liked, so i went to tweak my curves and found my fan speeds are not actually matching the curve controller at all. I've checked what I can but cant seem to find a cause.


I've attached screenshot to highlight what I mean, even moving the curve to extremes in the temperature region does not seem to lead to much change. (for ease of illustration I've just used an auto curve for the screenshot).


Image Link

Any ideas why?!

sebastian

Administrator

Posts: 10,519

Monday, November 30th 2020, 2:53pm

This is ok.
The controller output 0..100% is scaled to the fan output power settings.
Take a look into the user manual from the download section. This behavior and the settings are explained.

k2viper

Full Member

Posts: 154

Monday, November 30th 2020, 2:59pm

Well, I see nothing wrong on your screenshot.
Your curve controller output can be scaled, and in your case is likely scaled, so <45% controller output is matched to 58% fan output.

Controller (curve controller etc) is a software algorithm creating output between minimum and maximum you set (30% and 100%), but controller's 30% and 100% can be scaled to e.g. 40% and 100% of fan output.

Take a closer look at this section:

Javeeik

Newbie

Posts: 4

Monday, November 30th 2020, 6:34pm

perfect thanks! :thumbsup:

I had completely misunderstood how that section worked, had completely missed that it scaled it when modified.

Knew i must have missed something so thanks again!

This post has been edited 1 times, last edit by "Javeeik" (Nov 30th 2020, 6:39pm)

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