LEDControl4 Passive and Meanwell LDD drivers

**chema61** · 12.11.2012, 18:28

Hi all: I'm trying to figure out how to connect and wire, if possible, the LEDControl4 Passive and these Meanwell LDD drivers

http://www.meanwell.com/search/LDD-H/LDD-H-spec.pdf

which work with a PWM signal between 2,5 and 6 V.

I think the main problem is to know what is the signal used by LEDcontrol4, ¿5 V? ¿10 V?

These drivers have several advantages over the traditional ELN or HLG D or P drivers. One: very small size; second: they are offered in several models each regulated at a certain current (300 mA, 700 mA and 1 A), third, they have PWM dimming from 0 to 100, instead of having a step between 0 and 15-20% like the HLG series, making dimming very smooth. Taking everything into account they are a very interesting alternative to dim several channels avoiding the use of several bulky ELNs drivers (a single power supply would be enough for all LDD drivers used).

Thank you

***GHL Support*** · 13.11.2012, 07:46

The LEDControl4 passive do not produce - lets say - a "voltage level" signal.
The outputs are "switched" to ground potential (the driver - pin).

If you need a signal with an defined voltage, you need to add the voltage signal via a so called pullup resistor to each driver pin.
see: http://support.aquariumcomputer.com/...2011-02-11.pdf

**chema61** · 13.11.2012, 13:57

Frank, thank you for your response. If I understood it well, and sorry for my ignorance, that means that I have to connect a low voltage power supply (let's say 10 V) and lower it with a resistor so as to achieve the voltage required by the driver.

***GHL Support*** · 14.11.2012, 07:51

If you need a 5V Signal, it would be better to add a power supply with 5V to the Pullup resistors.
If I look to the datasheet, it's not clear if you really need the additional power supply and the resistors.
Maybe the manufacturer of the module could answer this...

**chema61** · 14.11.2012, 08:48

Thank you Frank. I'l try to check that out with the manufacturer of the LEDs. Also I'll look for pull-up resistors diagrams and learn how they work.

**Gris** · 08.01.2013, 21:21

Hi,

Meanwell didn't put any information about addittional power on the pwm, but like the meanwell ELN-60-48P (on the forum and the datasheet didnt mention it... -> datasheet ELN-60-48P

I have the same problem, and work on the pullout resistor for 3days now :/
I put a power DC12V 300mA on the pullup and 2kohm I get 9.7V and still no control light via profilux (light on but no effect via profilux)... anyway I try to 500ohm to 4.7Kohm still no effect and tension still around 10V :/

I finally try a 47kohm resistor and yes Light on and control via profilux.... any way with the ELN-60-48P in this case I figure out that he need 1.23V to start light...

I go back to my tank room and will give more info when all test and install finish.

**Gris** · 16.01.2013, 01:13

Finally I get it to work I was not on the right way whan I post but get a very powerfull electronic regulator for very sensitive setting on the volt and resistances..

I need to sleep and post here very soon my almost perfect solution about communication over PWM

**Velaskes** · 18.01.2013, 14:55

Originally Posted by Gris

Finally I get it to work I was not on the right way whan I post but get a very powerfull electronic regulator for very sensitive setting on the volt and resistances..

I need to sleep and post here very soon my almost perfect solution about communication over PWM

Could you share more info please. What drivers do you use - Meanwell LDDs? Also what type of voltage regulator, diming line power source etc etc. Will appreciate it!