eln-6048d question

[h0ndap0w3r]

is it possible to run 16leds on a single driver?

rapid led says 8 -14... would 2 more break the bank?

I am looking at the phillips Luxon LEDS Blue/Royal Blue string.
would be running @ ~ 700-1000ma

 

[Six2seven]

It really depends on the LEDs you are running because of the forward voltage and the current you are driving them at

If your LEDs have a Vf = 3.6V you can only run 12 or so.
Example:

5 NW XP-G - (3.0v x 5) 15v
3-4 CW XR-E (2.75v x 3) 8.25v
5 RB XP-E (3.5v x 5) 17.5v
3-4 RB XR-E (2.75vx 3) 8.25v

That would be 16 LEDs at a Vf of 49 when the 60-48 driver can only handle 48. You have to also account for voltage loss in the wires.

 

[h0ndap0w3r]

It would be:

8 Phillips true Blues
Forward Voltage is 3.27V @ 700ma

8 Phillips Royal Blues:
Forward Voltage is 2.8V @ 700ma

8*3.27 = 26.16
8* 2.8 = 22.4
= 48.56

is this cutting it to close? i know theres manufacturing tolerances and all that, but still curious.

If i were to run each blue on its own channel 8 leds each, on a 60-48d, would i have to turn down the svr1 to 24v?

also i was planning on running a colored string and have a left over 60-24d lying around... would i be able to use that for a string of 8?

 

[Six2seven]

The mean well drivers are known to run higher but you won't know until you hook it all up. It's rare to have to adjust the svr1 but you will need to adjust the svr2 to not go over the max amperage.

 

[h0ndap0w3r]

The mean well drivers are known to run higher but you won't know until you hook it all up. It's rare to have to adjust the svr1 but you will need to adjust the svr2 to not go over the max amperage.

sounds good, thats pretty much what i had in mind, i just wasnt sure... ill just run 3 drivers and wire a few extra things... =T

 

[Mikey912]

you could also run them in parallel, i was running 24 leds on one meanwell driver ( 2 strings of 12 led's) and was able to dim them with my apex. Its a little more complex but was worth it for me personally.

 

[h0ndap0w3r]

you could also run them in parallel, i was running 24 leds on one meanwell driver ( 2 strings of 12 led's) and was able to dim them with my apex. Its a little more complex but was worth it for me personally.

Running in parallel seems dangerous to the leds... if one burns out the same amperage is going through as if it was still running the original amount of leds... snowballing to burn out more leds to to over driving

 

[Ddavies564]

Running in parallel seems dangerous to the leds... if one burns out the same amperage is going through as if it was still running the original amount of leds... snowballing to burn out more leds to to over driving

Definitely not dangerous if done right, with fuses and a 1 ohm resistor. I have never had an led burn up but it definitely could happen but everything would still be safe. Those drivers are whack anyways meanwell ldd are way easier and cheap.

 

[reefes pieces]

Good drivers will be conservatively rated. You should be fine since amperage is still rated under the driver's capacity. Also, don't worry about voltage loss on wires as its due to increased resistance (ohms) which might make the efficiency to the LED suffer but force less draw from the driver. Also, unless there's a decent amount of wire distance being used, the added resistance will be minimal. Voltage usually isn't the killer but amperage is the nail in the coffin. Hence its always better to go as high of a voltage as you can in order to keep amperage to a minimum.

 

[Six2seven]

you could also run them in parallel, i was running 24 leds on one meanwell driver ( 2 strings of 12 led's) and was able to dim them with my apex. Its a little more complex but was worth it for me personally.

running parallel gives you a bigger headache but most cost effective. you must match the current on both strings on the driver or Unequal current sharing/thermal runaway will cause degradation of that string which will lead to reduced lifespan.

Running in parallel seems dangerous to the leds... if one burns out the same amperage is going through as if it was still running the original amount of leds... snowballing to burn out more leds to to over driving

Running LED's in parallel with only a recommendation to use a fuse like some recommend on here is really NOT the best way to go. Its simply being cheap over doing it right. If you run 1.1 Amps through a 1A fast blow fuse it might NEVER actually "blow". you will kill your expensive LEDs and could probably start a fire. you MUST MATCH and BALANCE the strings equally and use fuses with resistors. if done right, parallel can easily be completed.

Definitely not dangerous if done right, with fuses and a 1 ohm resistor. I have never had an led burn up but it definitely could happen but everything would still be safe. Those drivers are whack anyways meanwell ldd are way easier and cheap.

the meanwell 60-48 drivers are very reliable. The problem using them is that when you run strings in parallel you cut the Vf in half which means you can only run each string no more than 600ma. it will be even less when you start mixing colors. higher capacity drivers like the are a better option when running in parallel

 

[reefes pieces]

Ok maybe he's not a cop. haha

running parallel gives you a bigger headache but most cost effective. you must match the current on both strings on the driver or Unequal current sharing/thermal runaway will cause degradation of that string which will lead to reduced lifespan.





Running LED's in parallel with only a recommendation to use a fuse like some recommend on here is really NOT the best way to go. Its simply being cheap over doing it right. If you run 1.1 Amps through a 1A fast blow fuse it might NEVER actually "blow". you will kill your expensive LEDs and could probably start a fire. you MUST MATCH and BALANCE the strings equally and use fuses with resistors. if done right, parallel can easily be completed.




the meanwell 60-48 drivers are very reliable. The problem using them is that when you run strings in parallel you cut the Vf in half which means you can only run each string no more than 600ma. it will be even less when you start mixing colors. higher capacity drivers like the are a better option when running in parallel

 

[Six2seven]

Ok maybe he's not a cop. haha

nope just a reef nerd. a cool one.

 

[h0ndap0w3r]

Hahaha... way to go guys