Lighting Matching cobs to driver

[Urryup]

Hi,
Can I run two 36V cobs off a HLG185H C1400A meanwell driver. I know the maximum is four but I want to know if I can just run two.

Also would I be able to dim it via the driver?

thanks

 

[Death The Cultivator]

Hi,
Can I run two 36V cobs off a HLG185H C1400A meanwell driver. I know the maximum is four but I want to know if I can just run two.

Also would I be able to dim it via the driver?

thanks

What's the current? Do you have a data sheet?

 

[Urryup]

What's the current? Do you have a data sheet?

I’m pretty certain they are 50W

http://ce.citizen.co.jp/lighting_led/dl_data/datasheet/en/COB_5/CLU048-1212C4_P3708_0516.pdf

They are citizen CLU 1212 cobs with this driver

 

[sirsmokealot]

This is a constant current driver so the answer is yes. You will have to wire them in series and then use the pot on the driver for adjusting the current. Looking at this picture you posted it's on the top right corner, labeled Io. ADJ, remove the rubber cap and use a philips screwdriver to adjust.

I'd also be a little careful assuming you can run 4 COB's off this driver, the voltage range is up to 143V. 36V x4=144V. Also keep in mind this is an A series driver and these go well over the advertised 1.4A when you crank the pot up. Says 1.57A on test report and most likely goes a little higher. At that current those 1212's are just a little over 36V so that's something to keep in mind.

https://www.meanwell-web.com/content/files/pdfs/productPdfs/MW/HLG-185H-C/HLG-185H-C1400-rpt.pdf

https://ce.citizen.co.jp/lighting_led/dl_data/datasheet/en/COB_6/CLU048-1212C4_0068P_201710_180423.pdf

 

[The Iconoclast]

I'm only guessing here as I'm not familiar with the constant current drivers, but it appears to me that that driver will supply 1.4A to whatever is connected, whether one or four cobs. 1.4 x 36 = 50W each light would output 50W which is a bit over the driver rating. It also could be dimmed by using a screwdriver in the current hole Io adjust.

 

[Urryup]

This is a constant current driver so the answer is yes. You will have to wire them in series and then use the pot on the driver for adjusting the current. Looking at this picture you posted it's on the top right corner, labeled Io. ADJ, remove the rubber cap and use a philips screwdriver to adjust.

I'd also be a little careful assuming you can run 4 COB's off this driver, the voltage range is up to 143V. 36V x4=144V. Also keep in mind this is an A series driver and these go well over the advertised 1.4A when you crank the pot up. Says 1.57A on test report and most likely goes a little higher. At that current those 1212's are just a little over 36V so that's something to keep in mind.

https://www.meanwell-web.com/content/files/pdfs/productPdfs/MW/HLG-185H-C/HLG-185H-C1400-rpt.pdf

https://ce.citizen.co.jp/lighting_led/dl_data/datasheet/en/COB_6/CLU048-1212C4_0068P_201710_180423.pdf

You’re a star. thanks a lot. I’ll have a read of that tomorrow when I’ve got a straight head again!

 

[Urryup]

I'm only guessing here as I'm not familiar with the constant current drivers, but it appears to me that that driver will supply 1.4A to whatever is connected, whether one or four cobs. 1.4 x 36 = 50W each light would output 50W which is a bit over the driver rating. It also could be dimmed by using a screwdriver in the current hole Io adjust.

Thanks for the reply. Yes I Know I can dim then them via the black rubber bung.
I’m pretty certain I have read somewhere that the minimum is 71fv from the driver and as they are 36v cobs, two would make 72fv?

 

[sirsmokealot]

The constant current mode will only work in the 0-143V range, as long as you stay within that range you are good. 4 COB's will get you over that so 3 is max. i'd run.

This is from the Citizen datasheet...

 

[Urryup]

The constant current mode will only work in the 0-143V range, as long as you stay within that range you are good. 4 COB's will get you over that so 3 is max. i'd run.

View attachment 1298544

This is from the Citizen datasheet...

I have got 3cobs but only 2 heatsinks so 2 it will have to be!
thanks

 

[sirsmokealot]

You're welcome, you can always add that 3rd COB when/if you get another heatsink.