meanwell driver question

[vbsaltydog]

I am thinking of running a 5 channel multi chip LED off of my existing drivers

multichip:
http://www.clay-boa.com/cree-lumia-5-2-70w-full-spectrum-5-channel-cree-led/

Drivers:
http://www.trcelectronics.com/View/Mean-Well/ELN-60-48D.shtml

I have two drivers per multi chip so I need to run
two "chip channels" on one driver
and
three "chip channels" on the other driver.

This gives me a white/uv channel and a blue channel.

The issue is that in order to do this, I need to run 700ma chips and 1500ma chips from the same driver. I know the eln 60-48d has a pot to turn the max current of 1.3ma down so I could run the 700ma chips safely but this would under drive the 1.5ma chips.

Alternatively, I should be able to put the driver in constant voltage mode and let the chips load the circuit's amperage as needed to get the constant voltage of 48v. Is this a feasible solution?

Lastly, the driver that runs the three "chip channels" will need 53v for the chips attached but the driver has a max forward voltage of 48v. Does this mean that the chips will simply be slightly under driven? and no harm will result? The driver does have overload protection for current as well as voltage.

Driver 1:

* 3 XT-E Netural White and 2 XT-E Warm White (base white color) (16.5V @ 1500mA)

* 3 Hyper Violet (430nm) and 2 True Violet (410nm) (Violet channel) (18v @ 700mA)

Driver in constant voltage mode with a max of ~35v

Driver 2:

* 3 Hyper Violet and 2 CREE XT-E Royal Blue (Actinic channel) (18v @ 700mA)
* Royal Blue (base blue spectrum) (16.5V @ 1500mA)
* Turquoise / CREE XPE2 Blue (enhanced color spectrum) (17.2V @ 700mA)

Driver in constant voltage mode with a max of ~48v

Thanks for any suggestions

 

[vbsaltydog]

Added tidbit

I run these drivers from a 0-10v dimmer and will likely not be running them over 50% but I dont want to restrict myself to a 50% max setting.

 

[mcgyvr]

You can't run LEDs with a constant voltage power supply..
LEDs require constant current ONLY..

If your combined Vf is above the output range of the driver then they simply won't light up at all as the voltage is not sufficient to overcome the Vf requirement.. or the leds will flash as the driver is "trying" to do its job but just can't

I'd recommend getting different drivers <---best solution
OR run both the 1500mA one one driver and then run something else for the 700ma chips..

Frankly those 5 channel chips should be driven with 5 channel LDD driver boards or similar

 

[perkint]

The ELNs can be used to drive the chips as it does constant current, but as above - three chips is too high a voltage. Cheapest, easiest good solution is meanwell LDDs.

Tim

 

[vbsaltydog]

Thanks to both of you. I was going to retrofit some existing fixtures by removing the LED arrays and putting the multichips on the heat sink and using the integrated drivers.

If I have to swap out the drivers then it negates the point of repurposing the existing drivers to simply go from an LED array to a multichip configuration.