Can the PMP-450 pump speed be controlled with a fan channel on the aquero 5 or the poweradjust2? the pump has a molex with 2 wires and 1 RPM wire.
it works at 100% with the molex connected to the psu and the 1 rpm wire connected the aquero. the aquero only reports the pump's rpm and controller changes have no effect.
Yes, you can do this. Some work will be required....
Basically, the RPM wire is a sensor only; the PMP-450 is not a PWM device, so you have to control speed via voltage. Just make a molex to fan header adapter to connect the two power lines to the fan connector. Koolance sells an adapter that will do this for you:
http://www.koolance.com/water-cooling/pr…?product_id=758 . The idea is that you connect the molex and fan connector from the pump to the adapter, then the adapter to the aquaero -- you'll draw all your power from the aquaero. (I ended up just reterminating the pump leads onto a 3-pin fan connector, since it's much tidier.)
After you've got that set up, set the pump speed to maximum (setting 5) using the adjustment dial.
Next, in Aquasuite, you will need to set up the appropriate fan channel. The PMP-450 has a voltage range from 12V (where I get 4850 rpm) to about 7V. You will have to experiment to find the lowest voltage possible -- I have mine set to 7.2V which produces ~3100 RPM at the pump (any less and the pump shuts off). You will want to enable startboost and "hold minimum power."
As the voltage decreases, so does this power. Inversely, this generates heat at the power amplifier on the Aquaero. I can't speak to the stock heatsink -- my Aquaero is water-cooled -- but at minimum power my power amplifiers run at about 70C. Just something else to keep an eye on.
Hopefully that answered your question!