Need help, how to adjust the HLG-240H-48A with 4x CXM 22's to 35W each.

Salah82

Salah82

Active Member
Whats up my Led Brothers!!!

Finally i got my first light togheter.....Got the aluminum L brackets for the frame, 4 Heatsinks, 4 CXM22's 90 CRI 3500K and a HLG 240H-48A Driver.

I am completely new to the LED DIY lighting and need some help before i light this up!

Before anything.....how do i go about dimming the driver now to about 35Watts per Cob....total of 140watts?
I know there is the dimmer on the thing but .... again have no clue how to go about it yet!

thank you my brothers!
 
Airwalker16

Airwalker16

Well-Known Member
The potentiometer on the front that is for dimming, pull the rubber plug and turn it counter clockwise with a Phillips screw driver.
 
Salah82

Salah82

Active Member
Airwalker16 said:
The potentiometer on the front that is for dimming, pull the rubber plug and turn it counter clockwise with a Phillips screw driver.
Click to expand...
To what setting do i dimm to get the 140Watts?
Do i need any measuring tools to adjust correctly? Should i just go ahead and turn it all the way down before anything?
 
Airwalker16

Airwalker16

Well-Known Member
Salah82 said:
To what setting do i dimm to get the 140Watts?
Do i need any measuring tools to adjust correctly? Should i just go ahead and turn it all the way down before anything?
Click to expand...
Go buy a Kill A Watt at harbor freight. Plug it into your outlet and then the light into it and adjust until you see what you want.
 
Salah82

Salah82

Active Member
What about the two dimmers? Does it matter which one i use to dimm to achieve the wattage i want?
Or is there anything i need to pay attention to with those two?!
 
Airwalker16

Airwalker16

Well-Known Member
Salah82 said:
To what setting do i dimm to get the 140Watts?
Do i need any measuring tools to adjust correctly? Should i just go ahead and turn it all the way down before anything?
Click to expand...
If you're afraid of being over powered at start up, you certainly could turn it down some before turning it on.
 
Airwalker16

Airwalker16

Well-Known Member
Salah82 said:
What about the two dimmers? Does it matter which one i use to dimm to achieve the wattage i want?
Or is there anything i need to pay attention to with those two?!
Click to expand...
YES. The VDIm is to adjust the VOLTAGE of the driver. If you have a multimeter($7HarborFreight), you can use it to adjust to your LEDs exact voltage. Which you'll need to do if you're driver is a Model (the "-48" of the label) with higher voltage than your LEDs. So you'd use the other one for dimming the light.
 
Airwalker16

Airwalker16

Well-Known Member
The A version drivers like that of what you have, only can be dimmed to 50% also. On both Voltage and Dim. The B versions use an external Potentiometer that allows 100% dimming.
 
Airwalker16

Airwalker16

Well-Known Member
Oh boy... They're 51 volts... You really needed to get the Constant Current model driver instead of Constant Voltage and wire them in series rather than parallel. I'm not sure if that drive will be the best fit....

@CobKits @Humple
 
Airwalker16

Airwalker16

Well-Known Member
What size space is this for? Because a 240 driver can run those COBs at 60-65 wAtts each. The CoBs themselves can handle 200-250 watts each on their own.
 
Salah82

Salah82

Active Member
Airwalker16 said:
What size space is this for? Because a 240 driver can run those COBs at 60-65 wAtts each. The CoBs themselves can handle 200-250 watts each on their own.
Click to expand...
Like i said i was looking forward to run them @30 Watts each.....four of them at 140watts total and still have the option to run them @50watts each if needed.....more room to the top if i choose or need to do so, you know.
 
Salah82

Salah82

Active Member
Airwalker16 said:
What size space is this for? Because a 240 driver can run those COBs at 60-65 wAtts each. The CoBs themselves can handle 200-250 watts each on their own.
Click to expand...
Also brother Cobkits has this on his page on the 320-48A version driver:

Constant voltage/ constant current “A” version of 48V driver is voltage and current adjustable up to 53.4V for maximum utility with larger arrays of Luminus CXM22, CLU048-1818, CLU058-1825, and Vero29-B series.
 
Airwalker16

Airwalker16

Well-Known Member
Salah82 said:
Also brother Cobkits has this on his page on the 320-48A version driver:

Constant voltage/ constant current “A” version of 48V driver is voltage and current adjustable up to 53.4V for maximum utility with larger arrays of Luminus CXM22, CLU048-1818, CLU058-1825, and Vero29-B series.
Click to expand...
Hm. You'll have to run then in parallel for that driver.
 
Prawn Connery

Prawn Connery

Well-Known Member
I've got three HLG-240H-48A drivers and yes they will output up to almost 53V. You'll need to run the COBs in parallel, as @AirWalker stated.

With parallel circuits, I adjust the voltage and leave the current adjuster at max.

According to the Datasheet, at around 49.6V those COBs should each be drawing about 700ma for a total of 35W. So once you wire all four in parallel, check the voltage with an ammeter and adjust it down to just under 50V and then check the current. Total current should be in the 2.8a range. There will be a slight voltage drop from the wiring etc. Somewhere just under 50V should give you your desired 35W per COB.
 
Salah82

Salah82

Active Member
Prawn Connery said:
I've got three HLG-240H-48A drivers and yes they will output up to almost 53V. You'll need to run the COBs in parallel, as @AirWalker stated.

With parallel circuits, I adjust the voltage and leave the current adjuster at max.

According to the Datasheet, at around 49.6V those COBs should each be drawing about 700ma for a total of 35W. So once you wire all four in parallel, check the voltage with an ammeter and adjust it down to just under 50V and then check the current. Total current should be in the 2.8a range. There will be a slight voltage drop from the wiring etc. Somewhere just under 50V should give you your desired 35W per COB.
Click to expand...
Amazing my brother, will do! Thank you
 
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