Since 3 months i have my velbus installation up and running however i keep having issues with my LED lights on my VMBDMI-R.
I have 6 LED GUI10 - 220v LED spots.
When i dim to 0 they all go off, and after like 4 seconds 1 or 2 will turn back on and stay on forever.
How can i solve this ? The LED’s used are dimable.
CorePro LED spot
5w 365 Lumen
What can i do to solve this ?
Like at night they can fully light up my desk, feels like 5 - 8% dim value.
Really annoying, got 50 of those bulbs so replacing them is no option
Put decoupling relays between the VMBDMI-R and the load. (Not before each VMBDMI-R)
You can use batches of VMB4RYNO / VMB1RYNO or there is a solution that uses VMB6PBN and Arduino relays.
You just need to add a 0104 Momentary / Follow
action with the VMBDMI-R as the initiators and the relay channels as the subjects.
The reason being that there is a tiny forward voltage from the Triacs in the VMBDMI-R that is enough to energise your mains replacement LEDs. (But not all, it’s an annoying effect of the electronics inside the GU10s. Because the LED only requires about 1.3v to operate)
An old option is to sink the forward voltage across a filament lamp.
So an ‘old Skool’ solution would be to replace one of the LEDs on each circuit with a 20w (or greater) halogen lamp.
I know it’s a bit too late for you know, but we do specify a minimum load of 40W… If I understand correctly you’re at 30W (6 X 5W)? Triac dimmers do have their limitations. See specs here: https://www.velbus.eu/products/view/?id=429644
The good news is that the electronic preload has a good chance of helping in that case. No guarantees however…