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Dimming outside LED floodlight with DALI?

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onesixright:
Hi All!

I'm looking at outside floodlight. What requirements a the LED 's and driver should meet, to be able to make them dimmable via DALI?

Aynone did this? Your thoughts or recommendations are greatly appreciated.

I get this faint idea you cant just use a TRIAC on a LED driver.  ;D and with the sheer amount of LED types on the market: Can't see the forest for its trees...

Thanks!

H.O:
Buy the light fixture you want to use.
If the fixture is intended to be connected to 230V then make sure it's dimmable and use a DALI phase dimmer (usually trailing edge).
If the fixture is delivered without any driver you have more options.
* You can buy a standard dimmable driver and hook that to a DALI phase angle dimmer.
* You can buy a driver with analog dimmer control and use a DALI to analog converter.
* You can buy a DALI dimmable constant current driver to drive the fixture.

Personally I'd try the last option - DALI dimmable constant current driver.

 

Doctorandus_P:
The link below has a nice overview of what DALI is / does:
https://en.wikipedia.org/wiki/Digital_Addressable_Lighting_Interface

If you see this as a hobby, you can get some microcontroller and solder an interface together between DALI and some LED's, but then again, if this was your goal, you probably would have known this already.

If you want something that "just works" without too much fiddling then you'd probably be better of with a black box to interface between DALI and the LED's, or a LED fixture that directly speaks DALI.

onesixright:

--- Quote from: H.O on August 28, 2020, 04:10:36 pm ---Buy the light fixture you want to use.
If the fixture is intended to be connected to 230V then make sure it's dimmable and use a DALI phase dimmer (usually trailing edge).
If the fixture is delivered without any driver you have more options.
* You can buy a standard dimmable driver and hook that to a DALI phase angle dimmer.
* You can buy a driver with analog dimmer control and use a DALI to analog converter.
* You can buy a DALI dimmable constant current driver to drive the fixture.

Personally I'd try the last option - DALI dimmable constant current driver.

--- End quote ---

Thanks!

Few more questions:

1. How I can determine if a LED is suitable to be dimmed (apparently not every LED is)? 
2. Do you have any idea if the last option (DALI CC driver) is also the most Energy efficient?

Much obliged.

NiHaoMike:
Nowadays, I would suggest Wifi or Bluetooth since it's a lot cheaper than installing control wiring. You can have it work locally with no outside dependencies so don't be against it just because you don't like IoT - make it a LAN of Things.

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