Driver Question, Did I Screw Up & Buy the Wrong One?

So I wanted to add a red bar to my COB light, I purchased 4 red tristars with 10 leds total. Run at 700ma the vf should be around 20-22, the driver is a Meanwell LPF-16-24 I am getting 24v out of the driver but nothing is lighting up. Did I buy the wrong driver? If so could someone recommend something that would work for this. First time soldering but the connections look fine. From the positive of the first led to the negative of the last led I am reading the same 24v. Not sure what is wrong, please help.

According to the Luxeon ES datasheet typical voltage is 2.9V at .7A.

How are you coming up with 20-22 for 10?

Steve's Led shows Forward Voltage is 2.00V @ 700ma

One way to check would be to take one of the stars out of the series and try and light them up.

I can't find any information on the Luxeon ES that indicates anything other than 2.9V at .7A, like here it's listed: http://shop.stevesleds.com/Philips-Luxeon-ES-ROYAL-BLUE-3-Watt-LEDs-8794102476.htm

I don't see where the 2V figure is listed.

Rahz said:

One way to check would be to take one of the stars out of the series and try and light them up.

I can't find any information on the Luxeon ES that indicates anything other than 2.9V at .7A, like here it's listed: http://shop.stevesleds.com/Philips-Luxeon-ES-ROYAL-BLUE-3-Watt-LEDs-8794102476.htm

I don't see where the 2V figure is listed.

Click to expand...

RED not blue
http://shop.stevesleds.com/Philips-Luxeon-ES-Standard-Red-3-Watt-LEDs-8794102485.htm

but i'd verify with the datasheet 2.0 v sounds low, prolly closer to 2.3v
http://www.lumileds.com/uploads/265/DS68-pdf

That is a good idea, I'll just take off one of the stars and see if it lights up. Am I reading the driver correctly that the LPF-16-24 will handle 13.2 to 24v? https://www.trcelectronics.com/ecomm/pdf/lpf16.pdf
These tristars are mixed red & deep red, based upon that data sheet they can run anywhere from 1.80v to 3.51v so perhaps the bin isn't what Steve's is claiming. None the less it looks like I need to drop a star or look for another driver.

Ahh thanks, good catch. I found the white datasheet then the blue refrence at Steves, figured red would be similar.

Red is listed as 2.1V. I would still try pulling one of the stars out of the series and see what happens.

Rahz said:

Ahh thanks, good catch. I found the white datasheet then the blue refrence at Steves, figured red would be similar.

Red is listed as 2.1V. I would still try pulling one of the stars out of the series and see what happens.

Click to expand...

note that is 2.1 at 350, not 700ma, scroll down for the current vs voltage chart.

Sounds like I need to put the keyboard down.