Driver Question

[crn005]

So I had some LEDs burn out (on my royal blue string) due to them popping off of the heat sink and overheating a while ago. I finally got to taking them out when I was doing some work on them the other day and then my blue string started going in and out afterwards. I just put a meter to me, and come to find out, they're now running at 1.48A. I see now that that's probably the problem and will fix it. However, I am using a MeanWell ELN-60-48P, and it says it only goes up to 1.3A. Hw is that possible? I only removed two LEDs, reducing the total to 10 (they are CREE XT-E Royal Blues). Did that have an effect on the amperage? How did it get so high? Is it a malfunctioning meter?

Thanks in advance!

 

[mcgyvr]

Using the ammeter setting or voltage via a resistor inline?
did you measure the string voltage too?
got anything on the dimming input?

 

[Gorgok]

Strange. It almost sounded like you were under the minimum forward voltage the driver could handle, but its 24V and you should be over 30... The driver does have an over amp protection built in, so once it goes 110% it shuts down to recover. Your 1.48A reading exceeds the 110% value of 1.43A. Why its doing that i am not really sure, as far as i can tell you should be in the limits of the LEDs and the driver on everything except the over amped driver.

 

[crn005]

I dimmed that string with my controller and it helped. It's still cutting put every now and then, but that's just because I haven't tweaked the driver yet. Work got me busy. Maybe I'll do it today.