...All Things Vero...

[Raging Stalk]

Dam I wish that it would become common practice to use isolated drivers since this would be much easier than having to look up each meanwell driver. Its a pita.

HLG-240H-C2100b I hope is the one you are talking about. 2100ma with 122v (59-119 actual) so to play with Cs, here are some options:

1 cob per driver - 148.4w (about nominal, will do it but not recommended for constant use)
2 cob per driver - 70.3w when run in parallel, 1050ma each
3 cob per driver - 45.9w when run in parallel, 700ma each (common around 50w choice for these chips)
4 cob per driver - 35w, parallel, 540ma (204lm/W, you in the butterzone)
5 cob per driver - 27w, parallel, 420ma (219lm/w)
6 cob per driver - 22.4w parallel, 350ma (231lm/w)
7 cob - 19.2w parallel, 300ma (242lm/W)

Don't be scared off by the stories of thermal runway when wiring in parallel. Since the cob can operate at the max current you could lose all of your cobs but 1 and that one would still work.

You do still have some voltage room if you wanted to add some other cobs or monos but that was outside of your question.

 

[linky]

Is there a driver that can run 3 off a single driver at ~70 watts? Would I be able to do that with an HLG-320H-C2100b? So as is I could only run 2 off a HLG-240H-C2100b at ~70 watts? The ~68volt version that is.

I currently have 6 HLG-240H-C2100b that just arrived today, will return them though if I can get a driver that will run 3 at ~70 watts each.

thanks again

 

[Raging Stalk]

HLG-320H-2100b will allow you to run 2 C in series so you could get parallel runs of 2 in series, so 4 cobs per drivers running at 1050ma.

That might be a better option for you because I think you said you wanted to run 12 cobs at around 70w each, this lets you do it with only 3 drivers.

 

[linky]

HLG-320H-2100b will allow you to run 2 D in series so you could get parallel runs of 2 in series, so 4 cobs per drivers running at 1050ma.

That might be a better option for you because I think you said you wanted to run 12 cobs at around 70w each, this lets you do it with only 3 drivers.

I actually was planning on 9 cobs over a 4 x 4 at ~75 watts each. That is why I ordered the 38v 80cri ones and 240 2100b driver so i could do 3 per driver. But I guess for some reason the 38 volt version is not as good at the 70 volt version.. so now not sure which driver I should/could use to drive 3 at ~75 watts (I currently have a veg light with 4 4000k vero 29 80cri gen 7;s, 48v version on a 320 2100b driver.. it is super bright so after seeing that I wanted to build a flower fixture using 9 of them over a 4 x 4.


What exactly is the different of a 38v and 70v 80 cri gen 7 versions? Why is the 70v that much better?

 

[Raging Stalk]

oops, I meant C version above, not D. Long day battling trolls in the Canadian Patients subsection. Will edit after I finish this post.

C, B, D is the order of performance. Go to Bridgelux's web site and get the performance calculator. That will help you lots.

The C will visibly be better than the B you currently have and the D would be visibly worse.

Start with your light source and then work back with the drivers. Don't let the drivers make the decisions for you, one reason I like isolated.

 

[klx]

Is there a driver that can run 3 off a single driver at ~70 watts? Would I be able to do that with an HLG-320H-C2100b? So as is I could only run 2 off a HLG-240H-C2100b at ~70 watts? The ~68volt version that is.

I currently have 6 HLG-240H-C2100b that just arrived today, will return them though if I can get a driver that will run 3 at ~70 watts each.

thanks again

You can run 5 Vero 29C on these drivers at 1050mA which is about 70 watts each cob.

http://www.cutter.com.au/proddetail.php?prod=cut2999

Edit> I have been using these drivers for a couple of months. So far so good.

 

[linky]

You can run 5 Vero 29C on these drivers at 1050mA which is about 70 watts each cob.

http://www.cutter.com.au/proddetail.php?prod=cut2999

Edit> I have been using these drivers for a couple of months. So far so good.

If I were to run 5 off one and 4 off the other would the one running 4 be driven harder than? Assuming it would need to be wired in parallel?

 

[klx]

If I were to run 5 off one and 4 off the other would the one running 4 be driven harder than? Assuming it would need to be wired in parallel?

No they are Constant current drivers, you wire them in series and they would be run at ~70 watts whether you have 4 or 5. You would just have some extra space spare on the driver with 4 but you are still within the 228 - 380 output voltage. Good to go.

 

[linky]

No they are Constant current drivers, you wire them in series and they would be run at ~70 watts whether you have 4 or 5. You would just have some extra space spare on the driver with 4 but you are still within the 228 - 380 output voltage. Good to go.

Ahh okay I see. Thank you!

oops, I meant C version above, not D. Long day battling trolls in the Canadian Patients subsection. Will edit after I finish this post.

C, B, D is the order of performance. Go to Bridgelux's web site and get the performance calculator. That will help you lots.

The C will visibly be better than the B you currently have and the D would be visibly worse.

Start with your light source and then work back with the drivers. Don't let the drivers make the decisions for you, one reason I like isolated.

What do you mean visibly better? The actual photon output between the 3 is different? Or the actual color spectrum is better with the C? If it is better with the C how different are they? I will get much better results with C or over Ds? ( I actually have 3500k's here, no 3000k's). I ordered based off my cree 3590 fixtures, I have 36v 3500k's on that fixture, did not think it was that much different with vero's lol.

I do not know that much about these and still learning but looking at this it seems the d is actually more efficient than the c, no?

 

[klx]

Ahh okay I see. Thank you!



What do you mean visibly better? The actual photon output between the 3 is different? Or the actual color spectrum is better with the C? If it is better with the C how different are they? I will get much better results with C or over Ds? ( I actually have 3500k's here, no 3000k's). I ordered based off my cree 3590 fixtures, I have 36v 3500k's on that fixture, did not think it was that much different with vero's lol.

I do not know that much about these and still learning but looking at this it seems the d is actually more efficient than the c, no?

View attachment 3906804

No, you are comparing C at 120 watts with D at 80 watts.

 

[linky]

No, you are comparing C at 120 watts with D at 80 watts.

missed that one.. so it looks like maybe ~8 percent difference in efficiency for the C over the D's then?

 

[Raging Stalk]

You are on the right track but now circle the values of efficiency for the same wattage used.

C at 76.7w is 172lm/w D at 79w is only 160lm/w

Bridgelux product calculator spreadsheet is what you need because then you can change the current values and everything is done for you.

For example, a 29c 3000k 80cri is 175lm/w at 70.3w when running it at 1050ma 66.9vf. A 29d 3000k 80cri is 154lm/w at 70.3w when running it at 1186ma 37.3vf. The difference is 21lm/w which is 147 lumens and is visibly different. So another way to put it is you get 150 more lumens from a C than a D when run at 70w.

 

[klx]

missed that one.. so it looks like maybe ~8 percent difference in efficiency for the C over the D's then?

Nah mate. The Cs crush the Ds by a lot more than 8%. Check the below comparison at 1050mA. No contest.

 

[linky]

Nah mate. The Cs crush the Ds by a lot more than 8%. Check the below comparison at 1050mA. No contest.

View attachment 3906822

I am sorry, I am not trying to be difficult but that is showing the D running at half the power of the C's right? So of course it will be approx half the output. My lack of knowledge could be getting in the way for me understanding it lol. Going be efficacy alone its about ~5 percent (of course that is worth the switch from D's to C's imo though).

 

[linky]

You are on the right track but now circle the values of efficiency for the same wattage used.

C at 76.7w is 172lm/w D at 79w is only 160lm/w

Bridgelux product calculator spreadsheet is what you need because then you can change the current values and everything is done for you.

For example, a 29c 3000k 80cri is 175lm/w at 70.3w when running it at 1050ma 66.9vf. A 29d 3000k 80cri is 154lm/w at 70.3w when running it at 1186ma 37.3vf. The difference is 21lm/w which is 147 lumens and is visibly different. So another way to put it is you get 150 more lumens from a C than a D when run at 70w.

Okay, I am understanding more now.. thanks So there is no meanwell driver will allow me to run 3 C's at ~70-90 watts each? If not is the ZPE driver from cutter the way to go, PF-P400CC-C105-S-DM?

 

[klx]

The point is that you need double the number of D cobs to achieve the same result with C cobs. If you have unlimited money then run the Cs really soft, or if you want to get your feet wet and save some powder for future upgrades you can run the C's a bit harder and still beat the Ds.

 

[linky]

The point is that you need double the number of D cobs to achieve the same result with C cobs. If you have unlimited money then run the Cs really soft, or if you want to get your feet wet and save some powder for future upgrades you can run the C's a bit harder and still beat the Ds.

I would like to run the 9 C's, would like to keep it around 700-800 watts range over a 4 x 4 for the 9 cobs, preferably 3 cobs per driver as I wanted to do 3 seperate bars of 3 each, which driver would you recommend to do this? thanks again for all the help and clarification.

 

[klx]

This driver will run 3 Vero 29 C @ ~70 watts so it wont quite get you to 700 watts but would still give you about 40w/sqf which would work killer with that spread.

http://www.cutter.com.au/proddetail.php?prod=cut3163

I am not sure about Meanwell drivers, there might be one that would suit.

 

[linky]

Okay, would this meanwell run 3 C's then at ~70 watts each? HLG240H-C1050B

Output Current-Channel 1: 1.05 A
Output Voltage-Channel 1: 238 V
Output Power: 249.9 W

 

[klx]

Yes. When it comes to how many cobs per driver you need to be within the range eg, output 119-238Vdc at 1.05A

Vero 29C @ 1050 = 66.1v

3 x 66.1 = 198.3.

All looks good.