Originally Posted by Capt Proton
I don't kmow what you could use for a controller for this pump. 38W max (Just under 4 amps) Highest rated controller I have seen is 30W. None of the controllers linked to on the PMP-500 product page are rated high enough.
The Lamptron FC9 would work, it's 50W per channel (4 channels) and has nice sized heatsinks, so that rating is probably pretty legit.
I have a pair of 24W Koolance 38mm fans on each of 2 channels, and a single one on a third channel of an FC9, and it's been fine since day one.
The downside, since the pumps have a tach line, is that the FC9 controls voltage out, referenced to the +12V line, as opposed to referencing to the negative, or gnd line.
This causes normal rpm monitoring systems to not be able to read the rpm, except at max speed.
To monitor the full rpm range, you'll need to build a reference level translation circuit board.
I also use an FC9 to control the fans (about 6W each) on a MORA 3 PRO - 18 X 140, divided into 3 groups of 6 fans each on chans 1, 2, & 3 on my external cooling module.
Wanting to be able to monitor their rpm, and finding it only read at max speed setting, is how I know the problem, and how to solve it, after designing and building a translation circuit board.
Below are a couple pics of the board plugged up to the FC9 and mounted on the rpm display unit, and another of it reading three test fans, 1 on each channel at reduced speed settings.
500 500 400 rpm and the sliders are near minimum (Upper display unit)
It's really a shame that it's not PWM controlled in this day and age, but an FC9 would be the next best thing.
The lower display is for the case fans, (1 & 3) and the flow meter in ml per min on chan 2Edited by IT Diva - 9/23/12 at 1:46pm