server fan diagram

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dacflyer
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server fan diagram

Post by dacflyer » Sun Aug 11, 2019 8:37 pm

does anyone have experience with pinout on server fans ? I have 2 different ones, but same brand name. I'd like to be able to power them up.
do they need a drive circuit or can they be powered up as is ?
i tried to search for a diagram, but haven't had much luck. I'm probably not using the right search terms.
but these are the 2 fans i have made by SUNON, PMD1204PPBX-A and PMD1204PJB1-A

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photo_2019-08-11_23-38-24.jpg
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photo_2019-08-11_23-38-37.jpg

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CeaSaR
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Re: server fan diagram

Post by CeaSaR » Sun Aug 11, 2019 9:08 pm

Only thing I can find is via Digikey:
https://www.digikey.com/product-detail/ ... -ND/665856
Hey, what do I know?

dyarker
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Re: server fan diagram

Post by dyarker » Mon Aug 12, 2019 4:01 am

The labels on the fans say what is needed. 12V DC for both, 1A or 1.23A max draw. For slower speed use a lower voltage, or a series resistor, or (for better efficiency) 12V PWM. For reversible variable speed, apply PWM through an "H" bridge.

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Re: server fan diagram

Post by dacflyer » Mon Aug 12, 2019 6:34 am

Dyarker>>I know what voltages it needs, but I need a pin out.. There's several wires on these fans..

Ceasar >> Those are not the same fans as I have.

dyarker
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Re: server fan diagram

Post by dyarker » Mon Aug 12, 2019 10:29 am

Is "several" 8 wires to a 5 pin connector?

https://turkish.alibaba.com/product-det ... 94239.html
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Re: server fan diagram

Post by dacflyer » Mon Aug 12, 2019 11:38 am

I finally figured it out, thru trial and lucky no error.

The PPBX-A uses Red and Brown for positive.
And Black and Grey for negative
IMG_20190812_133726_284.jpg
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The PJB1-A used only the Black for Negative and the Yellow for positive
IMG_20190812_133634_552.jpg
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I'm really amazed at how much air these things move, almost like mini leaf blowers

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