Lighting Roleadro 400w conversion

[MateraGaia]

So I have 2 of these Roleadro 400w lights I'd like to upgrade.

So it looks like they are running each chip off 2 36v drivers so 72v total for each chip as is. Looks like the Citizen clu048 1212 would run pretty efficient off one driver or which 72 watt chip off both drivers?

So @BigSm0 @arty zan @pop22 what do you think guys? Am I missing something?

 

[pop22]

Interesting. Most driver manufacturers, don't recommend ganging drivers. They MAY be 50 volt chips, but with these chinese lights, who knows...I'd say you could run a citi 1212 off of one driver. If it doesn't have enough voltage, a pair could drive a citi: 1812, 1818, or 1825 to about 60 watts.

So I have 2 of these Roleadro 400w lights I'd like to upgrade.

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So it looks like they are running each chip off 2 36v drivers so 72v total for each chip as is. Looks like the Citizen clu048 1212 would run pretty efficient off one driver or which 72 watt chip off both drivers?

So @BigSm0 @arty zan @pop22 what do you think guys? Am I missing something?

 

[jamesd3]

I'm definitely pulling up a chair for this!

 

[MateraGaia]

Interesting. Most driver manufacturers, don't recommend ganging drivers. They MAY be 50 volt chips, but with these chinese lights, who knows...I'd say you could run a citi 1212 off of one driver. If it doesn't have enough voltage, a pair could drive a citi: 1812, 1818, or 1825 to about 60 watts.

Yes I was surprised when I opened the light to see the way they were driven. So you think it's a 50 watt chip? I have no way to tell. The chip says nothing on it. The manufacturer claims it pulls 172-200 watts at the wall. Wouldn't that indicate a 72 watt chip? Would running a 50v Citizen chip with 72v from both drivers damage the chip?

 

[jamesd3]

Citizen CLU048-1818 90CRI
These are the ones I was looking at they run at 50v check them out

 

[MateraGaia]

@pop22 I'm new to all this led diy stuff. No disrespect meant just honest questions. Give me a furnace or air conditioner to fix any day of the week!

 

[pop22]

depends if the drivers are constant voltage or not, or if the voltage is adjustable. The 1212 is a 36 volt chip so would likely work with one driver and I bet that 2 citi 1212 would stomp the original chips! The 1212 is very close the the Cree 3590 in performance! The 18 series chips are all 50 volt chips. Stick with 80cri chips, there's no detectable gain from using the 90 cri, and the 80 cri put out more photons, and thats what its about!

Yes I was surprised when I opened the light to see the way they were driven. So you think it's a 50 watt chip? I have no way to tell. The chip says nothing on it. The manufacturer claims it pulls 172-200 watts at the wall. Wouldn't that indicate a 72 watt chip? Would running a 50v Citizen chip with 72v from both drivers damage the chip?

 

[pop22]

And non detected so we're fine lol! Questions are good, we learn nothing if we don't ask! Myself, I'd dump the stock driver and get an HLG-120H-48A. Cobkits has them for $32. Citi 1212 are $13.25 each for the new gen6 chips. Pretty cheap upgrade right there! here's what you can run with this driver:

2 1212@ 54.5W each (109W max), 3@34.9W ea (105W max) , 4@ 25.6W ea (102W max), etc.
2 1818@ 78.5W each (157W max) or 3@ 50.7W ea (152W max), 4@ 37.4W ea (150W max), etc.
2 1825@ 76.4W each (153W max) or 3@ 49.7W ea (149W max), 4@ 36.8W ea (147W max)

@pop22 I'm new to all this led diy stuff. No disrespect meant just honest questions. Give me a furnace or air conditioner to fix any day of the week!

 

[pop22]

the heatsinks should be fine also as I'd bet the citi chip is twice as efficient.

 

[jamesd3]

depends if the drivers are constant voltage or not, or if the voltage is adjustable. The 1212 is a 36 volt chip so would likely work with one driver and I bet that 2 citi 1212 would stomp the original chips! The 1212 is very close the the Cree 3590 in performance! The 18 series chips are all 50 volt chips. Stick with 80cri chips, there's no detectable gain from using the 90 cri, and the 80 cri put out more photons, and thats what its about!

Thanks a lot for the clarification between the 90cri and 80cri I was trying to understand the difference. I'll go with the 80cri if when I decide to build something haha