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evilc66
I thought you bought 12 of each color?

1.3A is a little on the high side and could have some long term damaging effects. Putting all 12 LEDs on one driver may solve some of the odd issues, which is why I asked you to put one more LED on the string. 7 LEDs would put you way over the minimum voltage of the driver and it may start acting properly.
artnsx
QUOTE (evilc66 @ Dec 17 2009, 09:02 AM) *
I thought you bought 12 of each color?

1.3A is a little on the high side and could have some long term damaging effects. Putting all 12 LEDs on one driver may solve some of the odd issues, which is why I asked you to put one more LED on the string. 7 LEDs would put you way over the minimum voltage of the driver and it may start acting properly.


Do you mean i should put all 12 in one string in series? I do have 24 total but they are all soldered/thermal-ed into place in 4 strings of 6 LEDs each.
artnsx
meanwhile here is where im what with this whole thing




evilc66
So you are running two strings of six in parallel on one driver? Why? The ELN-60-48D can take up to 13 LEDs in series. If you are running in parallel, each LED is getting half the current that the driver is putting out. Wire everything so you have 12 LEDs in series on each driver and see how things react then.
artnsx
QUOTE (evilc66 @ Dec 17 2009, 01:03 PM) *
So you are running two strings of six in parallel on one driver? Why? The ELN-60-48D can take up to 13 LEDs in series. If you are running in parallel, each LED is getting half the current that the driver is putting out. Wire everything so you have 12 LEDs in series on each driver and see how things react then.


Oh crap, i'll have to give that a shot. I just assumed this was how the driver was supposed to be wired up
artnsx
So i put 12 LEDs in series and the problem is solved. Also, I think i was testing the current wrong. Before I was hooking up the LEDs to the outputs of the driver, and then testing the current across the LEDs by putting the voltmeter terminals to the driver outputs. I think the right way is to add the voltmeter in series with the LEDs. I did that, and adjusted SVR2 to about 975mA when the dimming circuit is set to full power (10V). Is that right? Now I just need a second driver and i'll be done.

By the way evil, just wanted to say thanks. There is no way I would've even attempted this if I didn't know there would be a guy like you helping out on the forums. I'm sure alot of people appreciate your presence on the site. Thanks
evilc66
No problem bud. Glad you got it working. You were measuring current wrong by the way. You have it right now though.
artnsx
Since there aren't going to be any D models for a while, would it be ok to run all 24 LEDs from one driver (2 chains of 12) as a lead in period until i get the other driver? Would this damage the driver at all?
evilc66
It won't damage the driver, but it will halve the current going to the LEDs. You may want to adjust SVR2 up to compensate.
artnsx
So i've been running my whole array of 24 LEDs from the one meanwell-eln-60-48d driver. To measure the current, would I just put a meter in series with one of the chains and leave the other connected to the meanwell (i get a reading of about 600mA). Or would I put the meter in series with both the chains at the same time (+ meanwell to meter to + of both chains)? I get 975mA from this.

Which current do i go by?
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