Diy led build

[110galreef]

Following along. Love to hear your opinions on the True Violets.

I am looking to do a custom MH/LED rig for my 250g tank.

2 -250w MH's for great color & PAR, plus i need some extra heat,
12 XP-G CW's for a "high noon" punch and extra PAR...1200-1300mA
XP-E RB & some of the TV's 20-RB & 10 TV's or 16-RB & 14TV's for actinic supplememtation opposed to VHO's or T-5's

what mA are you going to run these TV's at? 700mA?

I will be about 650w for my 250g Tank lghting. Realtively effecitent and I belive the best of both worlds!
250w MH in HQI- 292w
42 3w LEDS ~ 80w on avg given the ramping

 

[lighthouze08]

Following along. Love to hear your opinions on the True Violets.

I am looking to do a custom MH/LED rig for my 250g tank.

2 -250w MH's for great color & PAR, plus i need some extra heat,
12 XP-G CW's for a "high noon" punch and extra PAR...1200-1300mA
XP-E RB & some of the TV's 20-RB & 10 TV's or 16-RB & 14TV's for actinic supplememtation opposed to VHO's or T-5's

what mA are you going to run these TV's at? 700mA?

I will be about 650w for my 250g Tank lghting. Realtively effecitent and I belive the best of both worlds!
250w MH in HQI- 292w
42 3w LEDS ~ 80w on avg given the ramping

i believe the max rated current for the true violet is 700mA, just to be on the safe side i'll run them at 650 ish

 

[lighthouze08]

12 XP-G CW's for a "high noon" punch and extra PAR...1200-1300mA <== you can go even higher, Ecotech radion run these xp-g cool white at 5w each

 

[110galreef]

Woah! Spec sheet says 1500mA max and 1000mA suggested max for max life.

I planned to run them on the ELN-60-48D which is a 1.3A driver.

How do you run them at 5w anyway??

3.6fV x 1400mA = ~ 5w if i am thinking this right??
3.6fV x 1300mA = 4.68w

 

[lighthouze08]

Woah! Spec sheet says 1500mA max and 1000mA suggested max for max life.

I planned to run them on the ELN-60-48D which is a 1.3A driver.

How do you run them at 5w anyway??

3.6fV x 1400mA = ~ 5w if i am thinking this right??
3.6fV x 1300mA = 4.68w

yep i believe you are right, i guess to run at 5w you would need a driver with 3.6 forwarding voltage, or if it's higher than 3.6 you can run a resistor across to get it down to the desire voltage. I wonder how efficient are the cree cool white in the ecotech fixture if they're running them that high

 

[110galreef]

The Xp-G at 1400mA are rated at 3.5fv.
That nets about 4.9w. So my guess is they in essence are driving the XP-G CW's at about 1425mA which is in essence the 5w.

The relative luminous flux curve is very linear for this LED. so it appears it is just about as effecient at the 1425mA as say 1000mA I think my 1.3A will be a great comprimise of not overdriving it yet getting about the max out of the LED.

at 350mA relative flux is ~ 100%
at 750mA relative flux is ~ 200%
at 1100mA relative flux is about 260%
1300mA relative flux is abou 300%
1500mA realtive flux is 325%
seems to slightly flatten after 1000mA, but is VERY minimal. Very linear curve


The 1425mA may just shorten the LED's life if any....

 

[lighthouze08]

gutted the fixtures last night, new leds will go in these 2 fixtures

 

[lighthouze08]

led package arrived

all the drivers got here today

royal blue, blue, cool white, and red leds

heat sink arrived today also, i ordered 2 from heatsinkusa.com

I measured out the grids and arranged the leds on the heat sinks, still waiting for the 6 violet leds to come. This is after the leds have been mounted

there are 6 empty slots on the fixtures for the violet leds, i'll begin wiring the leds together this weekend and test each of them out to see if there's any short in the circuit

 

[lighthouze08]

led package arrived

all the drivers got here today

royal blue, blue, cool white, and red leds

heat sink arrived today also, i ordered 2 from heatsinkusa.com

I measured out the grids and arranged the leds on the heat sinks, still waiting for the 6 violet leds to come. This is after the leds have been mounted

there are 6 empty slots on the fixtures for the violet leds, i'll begin wiring the leds together this weekend and test each of them out to see if there's any short in the circuit

 

[lighthouze08]

just found out that i'm missing a royal blue, ordered 28 but only got 27....this is the 2nd time that it happened from rapidled so if you guys order there, make sure you double check your package

 

[lighthouze08]

got done wiring the first string of white leds

 

[lighthouze08]

double post

 

[dadyoj21]

wow I am still blown away, that is a lot of leds. I will definately want to check this out when its all done

 

[110galreef]

So your going to push 14 XP-G CW led's on each eln 60-48 driver? What mA do you plan to run? It will be interexting if you pass the 48v mark.

I was looking to run 12 maybe 13 wanted 14 XP-G CW's on an eln 60-48D, but fear that the fV will thus exceed 48v

They say at 1000mA 3.3fV avg..... so 14 would get you about 46.2v assuming no wide variance.

At 1300mA they appear to be about 3.45fV...so 14 would put me about 48.3v

Is there a way to verify the Voltage when up and running? Maybe I could just go 14 and dial the mA down to like 1100-1200mA opposed to the 1300mA planned. Like to get the most light and spread.....

12 will suffice, but 14 would be better. I am spreading these around my MH's so i want an even number. 12 or 14. 13 is pointless.

 

[110galreef]

Oh and have you seen the cree product tool.
http://pct.cree.com/

It will show any led they make, and pretty much any parameter you want charted and can compare up to 3 leds side by side.

lm, lm/w, A, fV, w,

back to our radion discussion, to drive a XP-G CW at 5w, you are in essence running it at 1.4A

Play with the chart....let me know if lost!

Just need to adjust drive current to a range of like .35A -2A realy never drive an LED lower or higher than this.....
Put in the LED you want to compare
Pick the flux and leave the rest as is...

Then play with different params and compare to other LED's, see the effeciencies, etc...

 

[lighthouze08]

thanks, I'll def play around with the tool, I'm planning to run the xp-g cw at 1000ma. I think that should be within the safe limit w/ 14 on a string

 

[lighthouze08]

one more thing, i just double check the driver, it'll automatically shut off if overvoltage occur, and the voltage range for that driver is 43.2 ~ 52.8V so 14 on a string should be fine

specs sheet for reference http://www.meanwell.com/search/eln-60/default.htm

 

[110galreef]

thanks, I'll def play around with the tool, I'm planning to run the xp-g cw at 1000ma. I think that should be within the safe limit w/ 14 on a string

at 1000mA the chart shows the vF to be 3.397

3.397 x 14 =47.558. Close, so I'll keep and eye out to see how it goes for ya!!

 

[lighthouze08]

at 1000mA the chart shows the vF to be 3.397

3.397 x 14 =47.558. Close, so I'll keep and eye out to see how it goes for ya!!

hahaha i'll let you know if the driver will hold up, the tolerance should be + or - 5% for the mean well driver (or so they said)

 

[lighthouze08]

wow I am still blown away, that is a lot of leds. I will definately want to check this out when its all done

with the flexibility of the dimmer, i don't see why not. I'm dimming it manually but there are options to dim it using the apex, reefkeeper ect...