Can i use fan controller to control pump speed
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 Apr 11 2017, 09:29 AM, updated 9y ago
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#1
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Junior Member
429 posts Joined: Jan 2003 
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Yo guys i have a 18W pump which i just bought but no time to install yet.
It has 1 big 4P and 1 small fan like connector. I tried to put the small fan connecter to my fan controller. Doesnt work. I put 4P to my power supply the pump just goes full speed. If i connect both, fan controller just shows 4k+ rpm. I dial the knob to turn it down but it still 4k rpm. Does that mean i really have to put the small fan connector to mobo? |
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Apr 11 2017, 04:33 PM
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#2
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Junior Member
429 posts Joined: Jan 2003
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QUOTE(kherel77 @ Apr 11 2017, 03:31 PM) Is it 4-pin connector (molex) have 2-wires & fan like connector only 1 wire? Molex i didnt notice how many connector but i did notice the tiny fan type connector has 2 small wires.if that so; 4-pin molex provide full 12V power from PSU, so full speed according to it's spec. Fan connector-like provide speed reading only. You have to mod the 4-pin either convert to 7V/5V (fixed speed) or change to 3p/4p fan connector & connect to your fan controller for control the speed.  |
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Apr 11 2017, 05:08 PM
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#3
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Junior Member
429 posts Joined: Jan 2003
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QUOTE(kherel77 @ Apr 11 2017, 05:06 PM) Should be PWM & speed. You can control the speed thru motherboard, provide that your motherboard have the 4-pin fan header. But how come i use fan controller cannot control?I am using lamptron fc5v2 if not mistaken This post has been edited by beetch: Apr 11 2017, 05:08 PM |
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Apr 11 2017, 05:57 PM
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#4
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Junior Member
429 posts Joined: Jan 2003
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QUOTE(kherel77 @ Apr 11 2017, 05:09 PM) That fan controller adjust speed using voltage, not PWM. Yes. Isnt the speed of fan controlled by voltage as well. The controller has a knob to control the voltage. So technically it should work with pump as well? |
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Apr 11 2017, 06:20 PM
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#5
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Junior Member
429 posts Joined: Jan 2003
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Well i guess i figured it out. I just have to remove the molex, put the molex cables 12v and ground to pww header and retain the rpm cable on pwm header. That way i can use my controller to controll voltage to my pump.
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