MDT LED PWM dimmer. A KNX alternative to DMX.

[smartbusinesstools.be]

Today, I tested this MDT PWM dimmer with Loxone

It's an RGBW dimmer controlled via KNX which could be an alternative if you do not want to invest in a DMX extension or install DMX cabling, or if you're already using other KNX devices.

You can use it for either 12V or 24V DC Constant Voltage LED luminaires or strips. The appropriate driver (power supply) needs to connected to the +24V and GND terminals. 

MDT does not have a Constant Current version. Zennio does have one.

The device can be set to different modes:

1. RGBW
2. RGB + 1 independent channel
3. 4 independent channels

It also features a 16A relays which can be controlled automatically or manually (by Loxone): the intended use is to switch of the power supply completely when no power is needed, to save you the cost of the power loss at 0% dimmed.

You can control this relays independently via Loxone and use it for something else e.g. switch an additional light.

In Loxone Config, you have to multiply the outputs of the RGB lighting controller building block by 10 first because the KNX value goes from 0(%) to 100(%) rather than from 0(V) to 10(V).

Tested with an RGB LED strip and it did work as expected. The PWM is 600Hz and this can also be changed to 1KHz.

Now looking to buy some 24V Constant Voltage downlights to test it. My plan is to dim 4 circuits in 1 room with this 1 device.

[Michael]

It's always nice with more options :)

Can you link to the specific product at the manufacturer website or similar, just so I aren't looking at something wrong?

[Duncan]

http://www.mdt.de/EN_LED_Controller.html
http://www.mdt.de/download/MDT_TM_LED_Controller.pdf

they seem to be about 165 euros each