Wiring up 2 Meanwell drivers & dimmer to a Meijiu MAJO-V1.2-1000H-9- I'm lost!

tommyinajar

tommyinajar

Well-Known Member
Hiya- I got a
MAJO-V1.2-1000H-9

for Alibaba and it came with 1 useless schematic, no other instruction- Anyone has a clue how this assembles?
3 short wires, 3 outlet plugs, the dimmer is in pieces even. Everything I googled doest match-someone? ANYONE???

The last pic is the help I got from alibaba...
 
bk78

bk78

Well-Known Member
That dimmer is garbage. They very rarely work for longer than a week or 2, I’ve thrown 6 in the trash.
 
1

1212ham

Well-Known Member
I wonder why they need a bunch of electronics on that dimmer?

FWIW, I like the Rapid LED 0-10V dimmer, it holds a more steady power setting than the cheap pots I've used. It's more than just a pot, it is 0-10V.

rapidled.com

Cased Potentiometer with Knob

.
rapidled.com rapidled.com
 
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grotbags

grotbags

Well-Known Member
bk78 said:
This ^^^^ is all the dimmers I replaced the garbage ones you have with.
Click to expand...
everyone always recomends the rapid led digi dimmers but i dont rate them, i bought a load a few years back and every single one has failed.
after about a year in use i noticed random pulses of light, like the light would go full power for a split second then back to where you had it set. after a couple of more weeks use they would pulse more often and then wouldnt give full power when turned fully open.
maybe i got a dodgy batch or something but i have since went back to standard pots.
 
Star Dog

Star Dog

Well-Known Member
1212ham said:
I wonder why they need a bunch of electronics on that dimmer?

FWIW, I like the Rapid LED 0-10V dimmer, it holds a more steady power setting than the cheap pots I've used. It's more than just a pot, it is 0-10V.

rapidled.com

Cased Potentiometer with Knob

.
rapidled.com rapidled.com
Click to expand...
I wondered the same thing, the dimmer I have is only a pot with plug to connect it there's no electronic components to it.
 
S

Sinfor

Well-Known Member
1212ham said:
I wonder why they need a bunch of electronics on that dimmer?

FWIW, I like the Rapid LED 0-10V dimmer, it holds a more steady power setting than the cheap pots I've used. It's more than just a pot, it is 0-10V.

rapidled.com

Cased Potentiometer with Knob

.
rapidled.com rapidled.com
Click to expand...
A dimmer(0-10v or 10v pwm) is actually a power supply, that is why you see all those components, the one from Rapid is not a 0-10V dimmer, it is just a 100k potentiometer.
 
Rocket Soul

Rocket Soul

Well-Known Member
tommyinajar said:
Hiya- I got a
MAJO-V1.2-1000H-9

for Alibaba and it came with 1 useless schematic, no other instruction- Anyone has a clue how this assembles?
3 short wires, 3 outlet plugs, the dimmer is in pieces even. Everything I googled doest match-someone? ANYONE???

The last pic is the help I got from alibaba...
Click to expand...
I think I saw your post on GC about this. If you wanna stick with the dimmer you got I'd suggest this: stick both dim + wires from the driver in one of the terminal blocks in the second photo and group the dim - in the other block. Use the wires from the blocks and try them in the left sockets of the dimmer, the ones marked 0v and 10v and we'll just try it out, different combos.

If you want a different dimmer (and want it to dim both drivers at the same time): make sure you get the 50k ohm, not the standard 100k ohm as it will only work correctly with one driver. As the dealer if unsure.
 
grotbags

grotbags

Well-Known Member
Sinfor said:
A dimmer(0-10v or 10v pwm) is actually a power supply, that is why you see all those components, the one from Rapid is not a 0-10V dimmer, it is just a 100k potentiometer.
Click to expand...
WTF!!! they are actually 500k???, you will defo get full power out of a meanwell at 479.7k lol...and it will only dim to 50%... they are fuckin rubbish...
 

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tommyinajar

tommyinajar

Well-Known Member
I took 1 look at the dimmer in a pile of parts and almost tossed it before hand.

The best I can figure is the blue and brown pair of wires coming off each driver are supposed to be joined by the red n blue connector (TOTAL JUNK, $800 light, & .02 wires:( )

So it's Brown+Brown to red and blu+blu into blue. Then the red goes in the +10v on left side blue into 0V

then the power cord goes into brown to N and blue into L in...I think LOL I'm going to have a $900 paperweight.

The extra cord, wire brown yellow and black wire bundle wasn't totally exposed, and 1 wire was shorter that's left unattached?




I did post on a couple of sites. I posted a shorter one last week and got 0 responses so I expanded.

I bought this because of Meijiu'sgood reputation. No instruction, cheap wire harness, and dimmer....I'm starting to regret it, it better blow me away LED style.
 
S

Sinfor

Well-Known Member
grotbags said:
WTF!!! they are actually 500k???, you will defo get full power out of a meanwell at 479.7k lol...and it will only dim to 50%... they are fuckin rubbish...
Click to expand...
Could you take a better pic to see the circuitry?
I see that the potentiometer is connected as a voltage divider(using the 3 pins) so once connected to the driver it will behave like a 100k pot. Full turn and you will measure around 10v across the dim leads, half turn and you will measure around 5v and so on.
 
S

Sinfor

Well-Known Member
tommyinajar said:
then the power cord goes into brown to N and blue into L in...I think LOL I'm going to have a $900 paperweight.

The extra cord, wire brown yellow and black wire bundle wasn't totally exposed, and 1 wire was shorter that's left unattached?
Click to expand...
Brown to L, blue to N.
The extra cord is for remote control, you can turn on and off the output of driver with that and also have a 5V line.
 
1

1212ham

Well-Known Member
tommyinajar said:
Will that dimmer work ok with a 1000w or might I need this- https://rapidled.com/products/coralux-storm-led-controller-with-10v-analog-converter
Click to expand...
It will work with your drivers.
It IS a 0-10V dimmer and Meanwell's B type dimming can be controlled with a 100K potentiometer, 0-10V or PMW (Pulse Width Modulation).

As @Rocket Soul said, you can also use one or two pots.
"If you want a different dimmer (and want it to dim both drivers at the same time): make sure you get the 50k ohm, not the standard 100k ohm as it will only work correctly with one driver. a 50k pot can dim both drivers."
 
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