LED lighting color percentage help..

[telegraham]

Do tell! My intention if I went with Quanta (or any bar, really) was to use them as my mains, so dimming and control would be huge.

You need to find a matching 0-10V driver. In my case, Luca's 24" bars ship with fixed amperage 550mA at 40-80VDC (44W) drivers. I have Inventronics drivers that are 700mA and 25-75VDC (52W...close enough). If you strike out on your own, hit up RapidLED. They can find what you need.

The BT device is from Kobi Electric.

 

[oreo54]

Do tell! My intention if I went with Quanta (or any bar, really) was to use them as my mains, so dimming and control would be huge.

Just need to match and replace the supplied driver to one that is dimmable.
Sounds easy BUT sometimes ( most of the time) there isn't an EXACT match.

As above Rapid or ledsupply has numerous drivers.

There are other companies and brands.
Like Inventronics but hard to find.
Sosen is a new " brand" for me.

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There is leeway on matching but you need to understand why one does what one did

The controller is another issue altogether. And honestly with 0(1)-10 volt dimming a costly one in general
There are conversion boards so one can use the cheaper 5v pwm controller.

It all sounds complicated but it really isn't too bad

Would be nice if bars kept their max voltage below 56v...

Commercial controllers include but not limited to Full Bluefish, Apex, and Profilux (only 4 channels out of the box afaict).

Hmmm..there are some inexpensive possibilities .

Smart 0-10V Dimmer Kit

Hmm it's a Kobi .

This MAY work for the 48" bars...
Admittedly a WILD guess but I need the orig driver specs.
This would run 2 parallel strings of 36 diodes each.
At 500mA each side.

 

[oreo54]

Ok found the ps for a 36" bar

40-65v 1150mA.

Now closest fitI found atm:
Phihong PDA080W-1A0G
50-76v and 1000mA.
Slight hit to output
High v range fine
Low v range needs to be determined but unlikely the light bars ACTUAL voltage at that current is under 50v BUT it is possible
0-10v dimming.

60 LEDs 57 watts for the 36" bar per chart

57 = 1.150 x V

Oops...49.56V calculated...

In order to see IF that driver is useable (looks short) you would need to measure the actual running voltage of the bar hoping it is above 50v.

Second the driver needs to be actually built to spec or can actually handle a slight under voltage.

Best to find one that isn't sooo close to being wrong. Well on paper it is " slightly" wrong.

But this is why some might not be dimmable, some can.

Orphek has the same issues if one wanted to dim the " old" bars.

 

[oreo54]

Sorry for going way off topic.
Especially for so much " stuff"
Anyways I wouldn't normally bother with even more BUT I ran across this driver
that is a much better fit than all the "junk"
I posted above
Meanwell elg75-C1050AB.
A is for current adjustment
B is for 3 way dimming.
You may not want A since the driver is only 1050mA and the original above is 1150mA.
You can only adjust down to 525mA.
Call it cheap dimming or life extension.
Besides sometimes finding the AB versions is a challenge.
Even the B only. Currently Mouser won't have any B versions till October for example.

Anyways voltage range is 35-71 volts.
Orig is 40-65V.
Perfect fit.

Estimated wattage loss:
57(stated) - 51.5(est) =5.5W
Voltage decreases with lower mA's. I guessed a bit.
Good thing is the lower the current the higher the diode efficiency ( more photons/watt) so you lose and you gain. Normally not a wash though.

If that is worth it to get it dimmable/controllable is a personal choice.

This only applies to the 36" pro bar btw.

Note in calculating the 4ft bar I mixed up watts for diode count. 80 not 72.
Ignore the calcs.