LEDgardener

I'm new to the LT-FB24B strips and I'm having an issue with my build not lighting up. I'm running four 4' strips in parallel powered by an HLG-480H-48A. I used the two molex connectors at the one end of the strips when wiring. Only thing I can think of is that maybe with these having dual lengths of LED's I instead need to wire them with the positive at one end and the negative at the other.. Like this:

https://ledgardener.com/wp-content/uplo ... 4B-4X4.png

would recommend you post image of your wiring.
Cheers

Here are some images of what I've done (Sorry kind of sloppy after tearing apart for testing):
https://drive.google.com/file/d/106prfm ... sp=sharing
https://drive.google.com/file/d/1BqE9xs ... sp=sharing
https://drive.google.com/file/d/1IT4IHS ... sp=sharing

I tested the MeanWell and it's producing 50.84v and 10.32amps, so driver is working. Just think I don't have a closed circuit with the strips.

I connected a Meanwell 1400b to a single strip the same way I connected my buid and it powered right up. I'm very confused now... Any help would be much appreciated.

I would start from the beginning and hook up one strip at a time, make sure it fires. Then add another into parallel...then again, and again.

Hi .
simply connect plus and minus from driver to one side of strip when connecting parallel.

connect both positive and negative to one side.

it will work.

oldsoul7 wrote: ↑

Sun Oct 03, 2021 10:09 am

I'm new to the LT-FB24B strips and I'm having an issue with my build not lighting up. I'm running four 4' strips in parallel powered by an HLG-480H-48A. I used the two molex connectors at the one end of the strips when wiring. Only thing I can think of is that maybe with these having dual lengths of LED's I instead need to wire them with the positive at one end and the negative at the other.. Like this:
https://ledgardener.com/wp-content/uplo ... 4B-4X4.png

1. Re-Check the Wire Nut connections, it could be a bad connection and or inadequately stripped wire...

2.. Recheck the Driver connections and adjustments for -A suffix MeanWell LED Drivers;
a . "Vo" adjustment should be 'Factory Set' or adjusted up to or near max...
b. "Io" adjustment should be 'Factory Set' or adjusted down to min, 50% (just for safety purpose as not to overload the LED's)...

Good luck.


Typical LED Strip Parallel wiring diagram

greengenes wrote: ↑

Mon Oct 04, 2021 2:04 pm

I would start from the beginning and hook up one strip at a time, make sure it fires. Then add another into parallel...then again, and again.

Thanks for the response GreenGenes! I finally had time to get back to tinkering with the light. I dropped the drivers current to 3.5a and tested the leads of all strips, all fired right up. I guess it was a bad connection in the wagos I had originally installed, then eliminated those for wire nuts when troubleshooting. Both connections were bad I gather now. I was stumped when not a single strip would light up. Finishing the wiring off with a terminal block to eliminate the wagos. Love your content Green! I've been watching you for years, even before PLC.

Happy Growing, D

PeteR_1 wrote: ↑

Mon Oct 04, 2021 8:03 pm

oldsoul7 wrote: ↑

Sun Oct 03, 2021 10:09 am

I'm new to the LT-FB24B strips and I'm having an issue with my build not lighting up. I'm running four 4' strips in parallel powered by an HLG-480H-48A. I used the two molex connectors at the one end of the strips when wiring. Only thing I can think of is that maybe with these having dual lengths of LED's I instead need to wire them with the positive at one end and the negative at the other.. Like this:
https://ledgardener.com/wp-content/uplo ... 4B-4X4.png

1. Re-Check the Wire Nut connections, it could be a bad connection and or inadequately stripped wire...

2.. Recheck the Driver connections and adjustments for -A suffix MeanWell LED Drivers;
a . "Vo" adjustment should be 'Factory Set' or adjusted up to or near max...
b. "Io" adjustment should be 'Factory Set' or adjusted down to min, 50% (just for safety purpose as not to overload the LED's)...

Good luck.


Typical LED Strip Parallel wiring diagram

Thanks PeteR_1! I got the light up and running now. It was a bad connection after all. It all looked good on paper so I was at a loss. I've built lots of lights over the years without issues, just my first time using this kind of driver and new to the Samsung strips. I have six more of this style (parallel wired) fixtures to build now. Been killing it with Vero 29 COB's and EB gen2 strips, thought I'd try something different for the new builds. Funny how back in the day parallel wiring was a no no, what was it? Runaway current? Anyways the first LED's I built way back I ran in parallel off an old PSU with a buck converter. The hope was to eventually run them off solar with DC-DC drivers. Got the DC-DC drivers but still ran them off of the PSU. I appreciate the feedback, happy growing!