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Need advice! 4x0.21A fans on 1amp pr ch controller. (Solved) - Page 2

post #11 of 45
Thread Starter 
Quote:
Originally Posted by seross69 View Post



Sorry you are very right in what I said. I should have went in to more details and not have been so short and come across as a but hole and that is not what i meant to do. So I will elaborate now.

I should not have said very weak because because that was insulting but looking at them and pulling up several it seems that the average controller is 18 to 25 watts. So it is not as strong as others.

I was basing my calculations on an average fan doing .15 amps per fan and using the push/pull 480 on one fan channel. for this you would need 14.4 amps per channel. this might run off a 12 watt fan control but it is going to get hot then again with enough air flow you can get more out of a fan controller than it is rated for because it is the heat that damages them and this is how they are rated so that with no air flow it will control 12 watts. more air flow removing more heat then high wattage but you still have a point where the air flow is not going to help.. So my recommendation would be to get a minimum of 25 watt fan control so that you have something that is big enough for expansion and growth. The Noctuas at .6 amp would be 43 watts on a push/pull 360 radiator. To me it is better to have a much bigger fan controller than you need than you need because then they produce less heat and like I said before you have room to grow.. I would rather run 12 watts on a 24 watt controller than on a 12 watt controller. because you are stressing it less then. Again it really comes down to what you have, what you want and your tolerance for how close to the rating you want to run..

So did not mean to insult you and hope you can understand what I said above I think I can. I know i write and talk in circles so if you dont it is my fault..

One of the reasons i feel like this is I am an electrician by trade and we always have 125% bigger than what we actually need on wire, controllers, breakers everything.
an example if we have a 50 amp motor we want to control we will have a controller that is rated for 62.5 amps! redface.gif


You are also right all you need is one that will support your fans.... thumb.gif

Wow ^^ thats what I call elaboration! vary nice and understandable!

I didnt take it as an insult, rather than lag of info to back up your claim (witch you just provided by fare)

and I would agree with all of it! and im now considering to put my 2x0.6A on separate channels (that would make 3 channels for 3x0.6A and1 channel for the 4x0.21A=0.84A) that would keep me close to those 125% bigger (guessing you mean 25% bigger, so 125% all in all)

so basically: 4 channels, 1,2,3 takes care of my case fans and 4 takes care of my external's

Cheers
 
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post #12 of 45
Quote:
Originally Posted by GaMbi2004 View Post

Wow ^^ thats what I call elaboration! vary nice and understandable!

I didnt take it as an insult, rather than lag of info to back up your claim (witch you just provided by fare)

and I would agree with all of it! and im now considering to put my 2x0.6A on separate channels (that would make 3 channels for 3x0.6A and1 channel for the 4x0.21A=0.84A) that would keep me close to those 125% bigger (guessing you mean 25% bigger, so 125% all in all)

so basically: 4 channels, 1,2,3 takes care of my case fans and 4 takes care of my external's

Cheers

yes 25% bigger and that is in my mind 125% of the load... LOL just work terms coming out...
post #13 of 45
Thread Starter 
Quote:
Originally Posted by seross69 View Post

yes 25% bigger and that is in my mind 125% of the load... LOL just work terms coming out...

Ok.. thanks!

Consider this thread "Solved"
My questions are answered! got a lot of info from your text,

Cheers m8.
Edited by GaMbi2004 - 8/20/13 at 4:52pm
 
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post #14 of 45
Quote:
Originally Posted by seross69 View Post

-snip-
Actually like i said most fans are rated for surge current not continous current. If that controller is properly rated then it will handle 4 on 1 channel properly ...
But anyway who uses fan controllers with only 1 channel? Beats me.
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post #15 of 45
Quote:
Originally Posted by DaveLT View Post

Actually like i said most fans are rated for surge current not continous current. If that controller is properly rated then it will handle 4 on 1 channel properly ...
But anyway who uses fan controllers with only 1 channel? Beats me.

Some of us have a lot more than 4 fans so we have to put multiply fans on 1 channel
post #16 of 45
I run all case fans and cooler fans on same control... and all are automatically controlled by CPU heat. wink.gif
post #17 of 45
Thread Starter 
Quote:
Originally Posted by DaveLT View Post

Actually like i said most fans are rated for surge current not continous current. If that controller is properly rated then it will handle 4 on 1 channel properly ...
But anyway who uses fan controllers with only 1 channel? Beats me.
Agree.. that was actually one of my main questions (didnt even ask them before I got the answer) so my 2x 0.6A would probably work fine on 1A channel, since 0.6 is the highest power that the fan would ever draw (chances are that it would only draw it when short circuit at the worst possible place) or at start up power maybe?
Im probably gonna connect one fan pr channel anyways, since I got 4 channels and 3 Noctua 0.6A and 4xPhobya 0.21->0,84A

Funfact:on my Noctua NF-F12 package, it says 0.6 watt power consumption (doesn't make sense) and on almost every spec sheet I have watched, it says 0.6A (makes much more sense)
pretty bad mistake for a high end brand like Noctua...
Quote:
Originally Posted by seross69 View Post

Some of us have a lot more than 4 fans so we have to put multiply fans on 1 channel
Agree, but im pretty sure he was talking about my 4 fans, and only using one channel for all fans.. not one fan pr channel wink.gif
I might be misunderstanding this too :S
Quote:
Originally Posted by doyll View Post

I run all case fans and cooler fans on same control... and all are automatically controlled by CPU heat. wink.gif
LoL wink.gif good for you hehe.
How many fans do you got? I'm sure your GPU cooler isnt passive? is that/those fans controlled by PWM too?


Anyway.. the conclusion to draw from this is, it is healthy / safe to keep your fan draw below the rated channel supply, but it is possible to run higher than the rated current if fans are rated from surge (same as short circuit, right?) or start up draw (times 1.5 if I remember my theory right..)
So I will be using channel 1,2,3 for my 3x0.6A and 4 for 0.84A, that way all channels are in use. No "waist" of money and I will be on the safe side, rather than 2 x 0.6 on 1st channel 1x 0.6 on 2nd channel 4x0.21A on 3rd..

If you guys are interested, plz go to my build log (located in my sig) and keep an eye out for the next few days.. will be adding the 4x180mm with the 1080 rad + other cool stuff.
Also, the rest of the thread is quite interesting as well! loads of pics ^^

Thanks for the inputs! I know what to do with my fans now, ^^
 
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post #18 of 45
Quote:
Originally Posted by GaMbi2004 View Post

Funfact:on my Noctua NF-F12 package, it says 0.6 watt power consumption (doesn't make sense) and on almost every spec sheet I have watched, it says 0.6A (makes much more sense)
pretty bad mistake for a high end brand like Noctua...

Anyway.. the conclusion to draw from this is, it is healthy / safe to keep your fan draw below the rated channel supply, but it is possible to run higher than the rated current if fans are rated from surge (same as short circuit, right?) or start up draw (times 1.5 if I remember my theory right..)
So I will be using channel 1,2,3 for my 3x0.6A and 4 for 0.84A, that way all channels are in use. No "waist" of money and I will be on the safe side, rather than 2 x 0.6 on 1st channel 1x 0.6 on 2nd channel 4x0.21A on 3rd..

If you guys are interested, plz go to my build log (located in my sig) and keep an eye out for the next few days.. will be adding the 4x180mm with the 1080 rad + other cool stuff.
Also, the rest of the thread is quite interesting as well! loads of pics ^^

Thanks for the inputs! I know what to do with my fans now, ^^
TBH i'm sure it's about 2.8W or thereof, no way in hell a low airflow/low noise fan like a noctua will pull 0.6A

As for the surge current thing, it can be 1.3x to 2x or anywhere around there. The only exception i've seen thus far is the AF140L included in Air 540 cases (which is garbage)

1) Yes, it's probably safe from what you see on the sticker. Don't run any higher though, i'm sure most fan controllers don't really like being operated at near their rated current. (Shorter lifespan)

Awesome. I will check out your build log!
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post #19 of 45
Thread Starter 
I did some research on the subject:

the 4x180mm fans are rated at a combined amp consumption of 0.84A and my controller can take 1A pr channel.
The actual power consumption of the 4 fans combined is 0.4A (at 12V), and the amp draw drops as the voltage gets lowered
The start up power IS a bit higher, but that is only for about 3sec~ and still didn't come close to 1A.

I used my work bench PSU with volt dial, volt and amp monitor.. to make sure, I had my multimeter (good brand) and it showed the same numbers smile.gif

Conclusion must be that I wont have any problems having all 4 fans running on one channel smile.gif
The 3 other channels will be running 1x120 noctua each.. rated for 0.6A each. I didnt bother to multimeter those, I'm sure they will be using less than its rated amps as well..

Thoughts?
 
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post #20 of 45
Quote:
Originally Posted by GaMbi2004 View Post

I did some research on the subject:

the 4x180mm fans are rated at a combined amp consumption of 0.84A and my controller can take 1A pr channel.
The actual power consumption of the 4 fans combined is 0.4A (at 12V), and the amp draw drops as the voltage gets lowered
The start up power IS a bit higher, but that is only for about 3sec~ and still didn't come close to 1A.

I used my work bench PSU with volt dial, volt and amp monitor.. to make sure, I had my multimeter (good brand) and it showed the same numbers smile.gif

Conclusion must be that I wont have any problems having all 4 fans running on one channel smile.gif
The 3 other channels will be running 1x120 noctua each.. rated for 0.6A each. I didnt bother to multimeter those, I'm sure they will be using less than its rated amps as well..

Thoughts?

Good work and I see you are covering your bases. This is the only way to be for sure is to check them yourself. I never trust MFG data. and I always plan for bigger but that is just me and my OCD.. thumb.gifthumb.gif
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