How to control LED RGB light through PLC?

Serhioromano · Apr 26, 2016

For example I have PLC that works with Codesys. Sorry my questions are going to be complete dumb.

How do i wire such a lamp to PLC? Directly or through RGB controller or may be repeater?

Do I use analog or digital outputs with PWM?

The task is this. There is fountain with LED lights 3 different circuits. I need to allow user:

- Manual set of brightness and color for every circuit.
- Change colors with preprogrammed algorithms
- Change colors based on music

tragically1969 · Apr 26, 2016

Serhioromano said:
For example I have PLC that works with Codesys. Sorry my questions are going to be complete dumb.

How do i wire such a lamp to PLC? Directly or through RGB controller or may be repeater?

Do I use analog or digital outputs with PWM?

The task is this. There is fountain with LED lights 3 different circuits. I need to allow user:

- Manual set of brightness and color for every circuit.
- Change colors with preprogrammed algorithms
- Change colors based on music

Which RGB lamps are you using ?

The music part will be the hard bit, personally i would look for something that provides this sort of functionality off the shelf:

https://www.amazon.co.uk/ACTIVATED-CONTROLLER-CHANGING-CHANGES-NIGHTCLUBS/dp/B0053YAXMI

http://www.ebay.co.uk/itm/5-Channel...DC-/251958450341?_trksid=p2141725.m3641.l6368

Serhioromano · Apr 26, 2016

tragically1969 said:
Which RGB lamps are you using ?

It does not matter. COnsider it just a 3 color LED. It might be 600W spot light or 6W LED strip.

tragically1969 said:
The music part will be the hard bit, personally i would look for something that provides this sort of functionality off the shelf:

https://www.amazon.co.uk/ACTIVATED-CONTROLLER-CHANGING-CHANGES-NIGHTCLUBS/dp/B0053YAXMI

http://www.ebay.co.uk/itm/5-Channel...DC-/251958450341?_trksid=p2141725.m3641.l6368

I get this. What do you think if i take something like your last link, and connect its channels outputs to PLC inputs and connect PLC to LED RGB lamps, will that work?

tragically1969 · Apr 26, 2016

Serhioromano said:
It does not matter. COnsider it just a 3 color LED. It might be 600W spot light or 6W LED strip.

I get this. What do you think if i take something like your last link, and connect its channels outputs to PLC inputs and connect PLC to LED RGB lamps, will that work?

Why do you need the PLC at all ? You will be able to buy a programmable controller that will do all you want if you look around.

Serhioromano · Apr 26, 2016

tragically1969 said:
Why do you need the PLC at all ? You will be able to buy a programmable controller that will do all you want if you look around.

I need control through HMI, web server, smart phone. I think PLC is the best solution here.

Archie · Apr 26, 2016

is DMX an option with something like this:

http://www.beckhoff.com/english/ethercat/el6851.htm?id=199232119557

Firejo · Apr 26, 2016

DMX controllers use a standard communications protocol and are designed for exactly what you are looking to do. There are apps out there for PC, smart phones and tablets as well as a huge supply of MIDI files for just about every piece of music published (the MIDI file is used to control the lights to music). Using a PLC you’re going to have to figure out how to synchronize the music and create a lot of ladder logic that emulates something that already exists (without having to write code) and you’re going to spend a lot more money.

shooter · Apr 27, 2016

as you know codesys a look at raspberry Pi is a good option, cheap, and capable of PWM (via I2C)
a PLC will be very expensive as you need PWM, Music, DMX etc.

Serhioromano · Apr 28, 2016

thank you everyone. You've been of a great help! Now it looks like I understand where to move.

How to control LED RGB light through PLC?

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