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post #1951 of 1963

Well there's alot of advantages to PWM > Voltage Control, but the Aquaero 6 is already fully PWM Capable. 

The PWM D5 and Corsair SP120 PWM's operate a little differently than normal PWM. So Darlene came up with a solution so you can run PWM D5's and PWM SP120's from the A6 just like any other PWM device

 

PWM gives you a much greater range of control because the fan or pump is constantly getting it's full 12v while the 4th PWM wire is communicating with and telling it how fast to spin, it doesn't use up all the resources of the controller because it's being powered directly from the PSU, also because it's being powered str8 from the PSU you can run ALOT more devices off of a single channel

    
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post #1952 of 1963
Quote:
Originally Posted by MeanBruce View Post

I'm still not clear on the PWM advantage. Can someone explain why anyone would want this schema, when you already own a 4-channel (16 fans per channel) Aquaero 6?

But then I'm only running a simple 7fan array using three of the four A6 channels and using 80mA and 130mA fans, so what do I know? smile.gif


PWM has a couple major advantages over variable voltage for speed control.

One is that's more efficient with less heat, and the second, and what we make use of most, is that it allows much slower operation than variable voltage, all else being equal, and it has much greater torque at the lower speeds than variable voltage, so that fans/pumps will start much more reliably at low speeds.

At some risk of oversimplification, here's why:

Let's use a real world example of D5 pump.

At 12V it draws 2 amps

for 24W of power.

If we cut the voltage in half . . .

At 6V it draws 1 amp

for 6W of power

If we run it for 1 minute, that's 24 and 6 watt minutes

so for half the voltage, we end up with 1/4 the power.

Torque is proportional to the current.


Now let's use a PWM version D5 . . .

At 12V with 100% duty cycle, it draws the same 2 amps

For 24W of power

If we run it for the same 1 minute, that's the same 24 watt minutes of power and the full speed torque is the same as above.


Now lets run it at 50% duty cycle . . .

12V times the 2A gives us 24W which we divide by 2 for the 50% duty cycle, and we have 12W of power

If we run at 50% for 1 minute, we have 12watt minutes of power.

Notice that the current is still at 2 amps during the run portion of the pulse, so the torque is much greater than the half voltage scenario above.


Darlene
post #1953 of 1963
So was this original performance video of the Aquaero 6 using PWM fans?


    
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post #1954 of 1963
No, they are voltage controlled and directly powered by the aquaero.
post #1955 of 1963

The A6 can power ~2.5A per channel. The A5 could handle ~1.5A per channel. That was the point of that demo video. On an A5, you'd need a PA to handle that much power

    
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post #1956 of 1963
Quote:
Originally Posted by Shoggy View Post

No, they are voltage controlled and directly powered by the aquaero.

That's what I like solid simplicity.

So why does anyone need to use PWM fans with the amazing Aquaero 6?
    
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post #1957 of 1963
We now have an OCN Aquaero Owners Club


http://www.overclock.net/t/1474470/ocn-aquaero-owners-club


With this being a "new hardware" thread, it's really kind of time to have a real thread for all things Aquaero.

Hopefully, Shoggy will make regular appearances and hang out with us as much as possible.


As soon as we get enough of a base and following, we can become "Official".



See you all there thumb.gifthumb.gif


Darlene
Edited by IT Diva - 3/15/14 at 4:51pm
post #1958 of 1963
Quote:
Originally Posted by IT Diva View Post

Can they do that if the OP hasn't been active in the thread in a certain period of time?

I'm pretty sure the mod is the only one who can turn over ownership of a thread.
Quote:
Originally Posted by IT Diva View Post

We now have an OCN Aquaero Owners Warning: Spoiler! (Click to show)
Club



http://www.overclock.net/t/1474470/ocn-aquaero-owners-club


With this being a "new hardware" thread, it's really kind of time to have a real thread for all things Aquaero.

Hopefully, Shoggy will make regular appearances and hang out with us as much as possible.


As soon as we get enough of a base and following, we can become "Official".



See you all there thumb.gifthumb.gif


Darlene

Were you denied the ability to transform this thread? Or was it just easier to make a new one?
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post #1959 of 1963
Quote:
Originally Posted by skupples View Post

Quote:
Originally Posted by IT Diva View Post

Can they do that if the OP hasn't been active in the thread in a certain period of time?

I'm pretty sure the mod is the only one who can turn over ownership of a thread.
Quote:
Originally Posted by IT Diva View Post

We now have an OCN Aquaero Owners Warning: Spoiler! (Click to show)
Club



http://www.overclock.net/t/1474470/ocn-aquaero-owners-club


With this being a "new hardware" thread, it's really kind of time to have a real thread for all things Aquaero.

Hopefully, Shoggy will make regular appearances and hang out with us as much as possible.


As soon as we get enough of a base and following, we can become "Official".



See you all there thumb.gifthumb.gif


Darlene

Were you denied the ability to transform this thread? Or was it just easier to make a new one?


One of the mods PM'd me and suggested a new one was the best route to proceed. . . . .

So I did.

Hopefully, the Owners Club will work out like the R4BE thread where Luna started from scratch from the pre-release thread.

Darlene
Edited by IT Diva - 3/15/14 at 6:33pm
post #1960 of 1963
the d5 vario + molex+signal to 3pin adapter appears to be a suitable for controlling a d5 with the aquearo 6, and since you can fit a 3-pin connector into a 4-pin header this should be the only adapter needed. i guess that adapter costs approx 1$ to make smile.gif
    
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