CXM22s Won't Light

[HazednConfused]

I have (4) CXM22 3500k 90 cri wired in series with 18 gauge 600v rated wire. Nothing is loose, I've made sure that the 2 mains are connected to the corresponding terminals on the first and last cobs, and all wiring in between goes from negative to positive and so on. I'm using a meanwell hlg 240h 54b driver. Any common reasons why these things won't light? Thanks for any help.

 

[HazednConfused]

I can get one to light if I direct wire the two mains to it.

 

[nfhiggs]

I can get one to light if I direct wire the two mains to it.

The voltage range on that driver is 27-54v. In order to power your cobs with it you will have to wire them in parallel not series.

 

[HazednConfused]

The voltage range on that driver is 27-54v. In order to power your cobs with it you will have to wire them in parallel not series.

Damnit, What would the voltage range need to be to power them in series? Doesn't wiring them in parallel kill the cobs faster?

 

[mefunky]

A lot of folks here run parallel setups including me. No problems . Just don't mix chips of different brands . You can also limit Voltage to the chips by adjusting the voltage on the driver. Good luck

 

[HazednConfused]

A lot of folks here run parallel setups including me. No problems . Just don't mix chips of different brands . You can also limit Voltage to the chips by adjusting the voltage on the driver. Good luck

As long as I don't get this thermal runaway shit. My driver doesn't have any knobs, but will the 100k pot do the same thing? Thanks

 

[HazednConfused]

Can i utilize the double connectors on the ideal holders to make a parallel connection like this?

 

[mefunky]

Sorry it's early . I'm not sure about external dimming ,I have A drivers . With proper cooling I don't think you will have a problem with thermal run away unless something is wrong with the chip like bad strings of diodes , that would cause it to draw a different voltage. I'm sure someone will knowledge on B drivers will come through

 

[mefunky]

Can i utilize the double connectors on the ideal holders to make a parallel connection like this?

I'm on my mobile so I can't load pics. As long as they are all hooked up positive to positive and negative to negative. I've always run individual sets of wires

 

[HazednConfused]

Big thanks to you guys, I wired in parallel super fast by using the ideal holders. Worked like a charm! I was starting to get severely agitated with them not lighting. They may not be Cree, but these are by far the brightest lights I've ever seen in real life. Stoked about them. I appreciate the help guys.

 

[mefunky]

Not a thing wrong with those chips , I use them . Glad you got it worked out