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Mean Well LED Driver ELN-60 Series 45W - 60W 9V – 48V in Main Website Optional dimming function: PVM (P type) Controlled Fully isolated plastic case with IP64 level Protections: Short circuit/ Over current/ Over voltage Other features: Universal AC input/ Full range Built-in constant current limiting circuit with adjustable OCP level Isolation class II, no F.G. Class 2 power unit/ Pass LPS.
• Class 2 LED power supply • AC input: 90~264vac • Operates in constant voltage or constant current mode • UL1310 Class 2, Class II, pass LPS • Operating temperature: -20~+60°C • Constant current limiting level is adjustable via potentiometer • Protections: short circuit / over current / over voltage • Available with optional dimming function: 1.1~10vdc dimmer (D type) or PWM dimmer (P type) • IP64, fully isolated plastic case • The ELN series has a range of power offerings: • (30W) ELN-30 • (60W) ELN-60D (Dimmable) • 2 year warranty.
Know this has been covered in the past and after reading a million threads I just wanted to check i'm on the right track before I start ordering bits. I'm looking to control it with an Arduino board. Parts I have coming: 24 Cool White Cree XP-G R5 LEDs 24 Royal Blue Cree XP-E LEDs 48 Cree XP- Lenses (40 degree lenses) 4 Mean Well ELN-60-48P dimmable drivers 2 tubes of Thermal Grease Parts Required: £16.90 Arduino Duemilanove 2009 () £9.99 LCD Shield () £5.21 Protoshield Board () £2.62 Real Time Chip () £0.30 Watch crystal - 32.768kHz () £1.31 Battery Holder () £3.38 Temp Sensor () Resistors 1x4k7 2x10k 1x220R Build it up as detailed here from Krusduino's manual: Once that's built up and connected load up software to it and program as required. As I am using Meanwells and the output from the Arduino is only 5v it needs to be boosted to 10v, think i'm right in thinking I can use the following circuit (7 input is from arduino, Vin is 10v, Rf and R1 are both 10k resistors.). Am I along the right lines here?
Thanks in advance. Hey, I can chip in what i did: I used a 9V regulated PS in to the Arduino then from i used this as the rail voltage for the Op-Amp (as suggsy suggests). This gives me a 0-9V output for the meanwells, it does mean im missing out on a little bit of high end power output BUT to be honest its still beaches sps's from MH tanks unless there below 10' from the surface. So im not tooo disappointed. I did look at using a 12v input to the arduino and a 10v low drop voltage regulator but a. It was a pain finding a low drop which operated at only ~2v and b. I was advised that the arduino ran hot on its regulator when few 12v which is something i DID notice when i was powering it with 12v.
So i erred on the side of not cooking the regulator (mine did not have a heat sink on it, if your arduinos reg does you should be ok) If anyone finds a reliable 10v regulated supply please let me know Cheers AJ. Chris, If I may make a small observation on your proposed circuit, as AJ touches on, you may have a problem with regulation as the difference between the input and output voltage on your 317 regulator is only 2 volts. This is a bit close to the limit.
You may find one device works, and another one doesn't. If you could get your 12 volt regulated supply upto at least 13 volts you would be better off. However, that said, there is a small error which may work in your favour. Using the resistor values you have stated, you will only get about 9.6 volts, this could be just enough to overcome the problem, but you won't be able to reach the full 10 volts into your Meanwells. However, as AJ has again commented on, that may also not be a problem.
The summation of this is, your working a bit on the limit, and it is really within component tolerances whether it will work.