EB GEN2 1120 build. Putting theory into practice!

Hi all!

I’m finally going from theory to practice! Just wanted to get a “that’ll work” (hopefully!) and iron out a couple of things...

So the set up will be 6 EB Gen 2 1120 35K’s wired in parallel, powered by an ELG-200-42A (39-45V, 2.38-4.76A, 200W). At max driver current I think I’ll be able to run these at 57% although I’m hoping to run them at 50% (39V, 4.2A, 163.8W). Which for the fixture size of 1120mmx420mm (5sqft) should give me 32.7W/sqft and 5736lm/sqft. At 57% it’ll be around 37W/sqft and 6600lm/sqft.

Wiring?

I’ve followed LEDGs 4’ EB GEN 2 build diagrams on this. See terrible pic

Dimming? Have I got this right?

I start by turning both internal pots right down. Then I adjust the Vout across 1 (or all) of the strips and set it to 39V. Then I adjust Iout to 4.2A through all strips (or 0.7A through one). Maybe having to adjust a little when temp rises.

Thermal Runaway?

Any chance running this soft? Do I need to add a current limiting resistor or something?

Thoughts? Recommendations?

Cheers all!

Looks good. I would get the ELG-200-42AB, then you'll also have the remote 3-in-1 dimming option.

You don't need limiting resistors, just set Vout to 39v as you said. Those strips can run up to 1.0A naked, with no heat sink whatsoever.

Use 18 AWG solid wire to connect to the strips, look for doorbell or thermostat wire. Heavier wire is normally used from the driver and between connectors, but it's not really an issue with less the 5A from the driver.

ELG range will downrate output on 120V Ac, for 120v use the hlg range.

On voltage dimming (assuming youre doing this witth a multimeter): way i do/think about this is that the voltage ddimming sets an upper level of how much current each strip can draw. Setup max dim on both current and voltage. Then lower voltage slowly till you see current dropping/dimming of the light ((this should be around 39V but dont trust the datasheet blindly).
If you do this right (yoou might havee to play around with it a bit) then if you lose a connection or a couple of strips the remaining connected strips will continue drawing the same wattage as before instead of drawing extra current andd possibly get damaged.

Oh yeah sorry should have said I'm on 240v. Thanks for that. Excited!