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sleeper · Mon Jul 09, 2018 9:03 am

hello led gardeners, can you please help me?
im trying to order pcb strips from alibaba to use with my hlg 185h c1400a driver.
each strip will be 48 lm561c, total 14 strips.
problem is i dont know what schematic circuit to request from the manufacturer, all 48 leds in parallel, or 8 in series 6 in parallel like the samsung H series? does the wiring effect how well the leds operate? sorry i am just totally lost
Any help would be appreciated.

sleeper · Mon Jul 09, 2018 10:18 pm

sorry but am i asking stupid questions? really quiet here.
okay so if i realize i cant use 185h-c1400a to power 14 strips if they are 24v, should i request 12v or change the driver?
my space is 35 inch width, 21 inch depth and 43 inch height, trying get around 45,000 lumens with minimal heat.

still completely lost on the schematic circuit, is 8 in series 6 parallel better than 24 series 2 parallel?

Tue Jul 10, 2018 1:25 am

That’s sort of a tough driver to work with. Ideally, you’d be hitting each diode with around 150mA at most. 6S8P would be the closest you’d get to this but you’d only be able to run 7, possibly 8 on that driver.

With that many strips, you may end up having to wire the strips in some sort of series/parallel or straight parallel config in order to keep the voltage reasonable. If you got them as 8S6P, 14 in series would be 300+ volts which is no good. 6S8P would be 252V which is better but still pretty high.

sleeper · Tue Jul 10, 2018 4:40 am

Thanks for taking the time to answer LEG!

I wish I knew about this forum before I ordered the driver, should i replace it ?
based on the parallel strip build calculator for the LT-H562D, 14 strips at 75% i should get HLG-240H-24.

I started this project inspired by a build on another forum.
but starting from scratch knowing nothing about leds or electricity is difficult.
attached is his wiring diagram, I think he is using 12v flexible CC strips with 49 leds on each strip.

will i be able to drive 14 strips of 24v in series if I used 320H-C1400A driver?

Also, does 12v or 24v matter if the driver is close distance to the fixture?

Futuregrow · Wed Jul 11, 2018 10:26 am

Here you go, I whipped up a spreadsheet to calculate every possible combination for you at 0.1 A. Hopefully this helps.

If you like I can e-mail you the spreadsheet so you can slap in whatever "per diode" forward voltage and current specs you desire, and it'll auto calculate and populate all the fields.

This should help you find a configuration with which to choose a driver

Futuregrow · Wed Jul 11, 2018 10:33 am

Here's another table at 320W to get it close to the driver configuration you wanted.

I got the voltage at that current off Samsung's calculator (pic attached). Let me know if I you agree or disagree with my method.

Cheers

Futuregrow · Wed Jul 11, 2018 11:50 am

Ok I whipped up a formula to calculate which driver to use out of the entire HLG-320H and HLG-240H range. It looks like this:

=IF((M4<=22)*AND(L4>6,L4<12)*AND(N4>315,N4<325),"HLG-320H-12",IF((M4<=19)*AND(L4>7.5,L4<15)*AND(N4>315,N4<325),"HLG-320H-15",IF((M4<=15)*AND(L4>10,L4<20)*AND(N4>315,N4<325),"HLG-320H-20",IF((M4<=13.34)*AND(L4>12,L4<24)*AND(N4>315,N4<325),"HLG-320H-24",IF((M4<=10.7)*AND(L4>15,L4<30)*AND(N4>315,N4<325),"HLG-320H-30",IF((M4<=8.9)*AND(L4>18,L4<36)*AND(N4>315,N4<325),"HLG-320H-36",IF((M4<=7.65)*AND(L4>21,L4<42)*AND(N4>315,N4<325),"HLG-320H-42",IF((M4<=6.7)*AND(L4>24,L4<48)*AND(N4>315,N4<325),"HLG-320H-48",IF((M4<=5.95)*AND(L4>27,L4<54)*AND(N4>315,N4<325),"HLG-320H-54",IF((M4<=16)*AND(L4>6,L4<12)*AND(N4>235,N4<245),"HLG-240H-12",IF((M4<=15)*AND(L4>7.5,L4<15)*AND(N4>235,N4<245),"HLG-240H-15",IF((M4<=12)*AND(L4>10,L4<20)*AND(N4>235,N4<245),"HLG-240H-20",IF((M4<=10)*AND(L4>12,L4<24)*AND(N4>235,N4<245),"HLG-240H-24",IF((M4<=8)*AND(L4>15,L4<30)*AND(N4>235,N4<245),"HLG-240H-30",IF((M4<=6.7)*AND(L4>18,L4<36)*AND(N4>235,N4<245),"HLG-240H-36",IF((M4<=5.72)*AND(L4>21,L4<42)*AND(N4>235,N4<245),"HLG-240H-42",IF((M4<=5)*AND(L4>24,L4<48)*AND(N4>235,N4<245),"HLG-240H-48",IF((M4<=4.45)*AND(L4>27,L4<54)*AND(N4>235,N4<245),"HLG-240H-54",""))))))))))))))))))

But now in the spreadsheet we can play with settings and it'll eliminate anything that won't work and will only display a result for a valid combination.

Futuregrow · Wed Jul 11, 2018 11:59 am

Sorry man but even with all this maths, I cannot find a combination of strings and parallels to suit a Mean Well driver.

My spreadsheet is right too, because if I manually enter permissible values based on the advertised driver specs in the datasheets, it returns a result. But none of the fields populate in the drivers column with any combination around 240W or 320W.

I'm still happy to send you the spreadsheet to play with, you may be able to find that one magic setting that works.

With that said, I've only used the min and max voltage values as per the advertised range for the drivers, and I haven't used the slightly larger maxes under the "voltage adjustment for A/C type drivers only" section. If those values were used, you may be able to squeeze a few extra volts out and achieve some combination that works.

sleeper · Wed Jul 11, 2018 12:10 pm

Hey Futuregrow
That is incredibly detailed reply thank you my friend!

about the first chart at 0.1A - if im reading it correctly, each strip inner circuit 8S 6P , all 14 strips wired 7S 2P it will work with the 185H-C1400A?
do you think i should change the driver to 320W for my space dimensions?

sleeper · Wed Jul 11, 2018 12:32 pm

so it will not be possible to run 14 strips on CC driver? i used ledgardener parallel strip build tool based on LT-h562D.
it is also 48 lm561c leds per strip.
should i just get the CV driver? problem is i dont know how to adjust voltage and dont want to burn the leds.
sorry my understanding is very basic.