Forum Members section LED light and others Multi chip 5 channel led

Multi chip 5 channel led  [SOLVED]


Post Number:#1 Post Thu Feb 19, 2015 7:20 am
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Hi Fernando I have my lights setup but I am having an issue, when 4 channels are on they will run at 100%, when I add the 5th channel the all go dim then offat 100%. Here are the specs.

SPECIFICATIONS: 

Channel 1: EPISTAR ES-CADBV45P 45*45mil 4500K x 10 chips  (32-34V @ 350mA-500mA)

Channel 2 : EPISTAR ES-CADBV45P 45*45mil 455nm Royal Blue x 10 chips (32-34V @ 350mA-500mA)

Channel 3 : EPILEDS EP-U4545K-A3 45*45mil  430nm Violet(UV) x 10 chips (32-34V @ 350mA-500mA)

Channel 4 : EPILEDS BH-R4242D-A1 42*42mil 660nm x 5 chips + Epistar ES--CADBV45P 490nm x 5 chips (27-29V @ 350mA-500mA)

Channel 5 : EPILEDS EP-U4545K-A3 45*45mil 410nm  (32-34V @ 350-500ma

48 Volt
7.3 Amp
350 Watt
87.5% Efficiency

Meanwell 5 up board with ldd500h drivers
Happy reefing to all.
Christopher Kindig

Post Number:#2 Post Thu Feb 19, 2015 8:13 am
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Hi!

This power supply is regulated to how many volts?

The GND from board is connected with GND (- 48V) from power supply?

Which menu you are using to test it?

Best regards.
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Post Number:#3 Post Thu Feb 19, 2015 8:23 am
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I am using the test leds in ferduino menus, yes ground is connected (-48), and if at max is running 49 volts.
Happy reefing to all.
Christopher Kindig

Post Number:#4 Post Thu Feb 19, 2015 8:38 am
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Why 49V?

The LEDs need of 29V or 34V the LDD need of 3V only.

Try adjust the voltage to 37V and add a resistor to channel 4.

R = (34 - 29) / 0.500

R = 10 Ohms

P = 0.500 * (34 - 29)

P = 2.5 Watt.
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Post Number:#5 Post Thu Feb 19, 2015 8:42 am
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What size resistor? It would go in between the 500ldd and the LED correct.
Happy reefing to all.
Christopher Kindig

Post Number:#6 Post Thu Feb 19, 2015 10:14 am
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Put between LED and LDD and check if you can control the power of 0 - 100 % otherwise put between power supply and LDD.
Maybe is needed change the value of resistor. I'm not sure about how many mA is needed to LDD.
Post your doubts on forum because it can help another user too. Just PM me for support if it's absolutely necessary.

Post Number:#7 Post Thu Feb 19, 2015 11:29 am
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Ok Fernando thank you for the reply, I will check it out when I get home this afternoon.
Happy reefing to all.
Christopher Kindig

Post Number:#8 Post Sun Feb 22, 2015 12:31 pm
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must have ground from 5up back to ferduino, when there is a supply there must be a return. oops.
Happy reefing to all.
Christopher Kindig




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