Originally Posted by morencyam
Remember to account for startup current as well. An AP-15 requires .360A at startup. So that's 4.32W at 12V. So you would need about 26W at startup per fan for 6 fans. Luckily the FC Touch is 30W per channel, so each set of 6 radiator fans shouldn't be a problem. Then put the case fans on a fourth channel, or spread them out over the last 3 channels
As for a splitter, you could probably get a MyModToys 4-pin board
and just use it as 3-pin instead
Actually, the Lamptron controllers don't care about starting current, only running current.
The logic is simple: the fans basically start and stop a hundred times or more per second. So that pretty much negates the starting current requirement.
Also OP, I had as many as 20 AP-45's running on a single channel with no problems at all.
And that would be 29 Watts rurring total. If starting current had been an issue, there was 127 Watts starting.
So no, starting current is not an issue at all with.the Lamptron line.
You can easily run two 480 rads in push/pull on one channel no problem with your AP-15's. You'll still be running about half the wattage I was running with my 20 AP-45's.
Now, for splitter, here is the one I used
. I like it because it's got 8 way split for my 480 p/p rads.
But you will have to mod it a bit to run as desired. Each Touch channel has one RPM display. You can only feed one rpm signal to each channel. That's the yellow wire on your fans. If you have more than one fan rpm signal connected to a single channel, it gets confused and tells you screwed up rpm readings.
That splitter I just linked sends 4 rpm signals on a single splitter. That's the 4 headers with the 3 pins.
So what I did is scratch the back of the splitter pcb to cut off 3 of the rpm signals. Now my channel only reads one fan's rpm.
An other thing too is those pcb's are not all that sturdy. If you plug and unplug your fans a lot, the headers get loose and loose current contact. So what I did is plaster the back of the pcb with 5 minute epoxy glue. Those headers ain't goin' no where now.Edited by PepeLapiu - 3/7/14 at 11:21pm