Can't get Vero29s working

cafepombo

New Member
Hi all, hopefully I haven't cooked anything. I'm running an HLG-240H-1750B (143 volts) driving 12 x Vero 29s (C version). This setup was supposed to be 6 in series x 2 parallel. Thought I'd give myself room to either get another driver and run 6 each driver and also test different heat sink / cooling options at different wattages (which I thought I'd share, as this forum has been awesome). Only issue is... I can't get them working. Any advice would be greatly appreciated.

The gaffer tape isn't a permanent solution btw...
 

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Nugachino

Well-Known Member
I ask because I have a 200w driver that also outputs 143v- but I'm only running two 69.4v, Vero29s @1400mA.
 

cafepombo

New Member
Yep they're the same 69v. I had thought I'd run mine a fair bit softer as my setup (kind of like a really big space bucket - I'll post photos when its done) can't handle any additional heat. I figured my next test would be to dim the driver and run two in parallel and see if I've some of these don't work or something?
 

Nugachino

Well-Known Member
What's the maximum and minimum voltages on that driver. And is the 1750 the drive current. I haven't tried meanwell drivers. So I don't know much about them.

But, I've got a feeling you may not be supplying enough voltage.

Edit- I looked up the driver. It supplies more wattage and amperage than mine. But has the same voltage.

I'm almost certain that driver can't run more than two of those Vero29 modules.

If I've taken in the information correctly. You've got to make sure your driver can also handle the total voltage of all your cobs. So if you've got 12x 69v, that's roughly 830v needed to fire all those up.

If you had some of the 36v Veros. You might have been able to run 4 of them off that driver. But I doubt you'd get more than two of the 69v chips going.

**Anyone with more experience- please correct me if I'm wrong in any way**
 
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GBAUTO

Well-Known Member
Hi all, hopefully I haven't cooked anything. I'm running an HLG-240H-1750B (143 volts) driving 12 x Vero 29s (C version). This setup was supposed to be 6 in series x 2 parallel. Thought I'd give myself room to either get another driver and run 6 each driver and also test different heat sink / cooling options at different wattages (which I thought I'd share, as this forum has been awesome). Only issue is... I can't get them working. Any advice would be greatly appreciated.

The gaffer tape isn't a permanent solution btw...
Try 2 in series and then 6 in parallel. That will allow each of the cobs to see 1/2 of the available voltage(143V) and then divides current output between the 6 parallel circuits. Don't know how well the Vero's will respond to running @ 300 mA.......
 

cafepombo

New Member
Ok well you learn something every day. Seems this driver will drive 4 Vero29 C COBs, but no more (presumably due to the voltage drop adding up to leave less than 69.4v they each need). I thought I could only run two parallel series (if that terminology is correct), and then only 2 in each series (3 doesn't work). If there were 6 parallel circuits, you'd be dividing the voltage by 6 and that wouldn't work (parallel divides the voltage and series divides the current). Anyway, seems this driver will drive these babies at 62.5w without dimming, which is higher power than I was hoping to run them at, but damn are they bright!
 
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