Qubino flush dimmer 1-10 V

We bought a nice LED lamp, Nemo Ellisse Pendant Double, which was said to be dimmable, but when receiving it there was a big IF  !!! 

The lamp was not "standard" dimmable, instead it was dimmable with 1-10 VDC or 100 Kohm potentiometer.

The 1-10 VDC control is common in big installations, in public environment, since it can control a lot of lamps with one dimmer.

Checking the lamp I found that the AC/DC LED driver was a Mean Well LPF-90D and in the drivers specification the second IF was found !!

The lowest control level didn't switch of the lamp

So after some Googling/thinking the solution was keeping the 2 standard lamp switches, 3 way, and installing a Qubino flush dimmer 1-10 V which also could be incorporated in my HomeKit/Z-wave project. 

And then the third IF was to be handled

The Qubino dimmer was operating on 12- 24 VDC

Since the LPF-90 is a constant current device the output voltage varies, so connecting the Qubino dimmers supply on it's output couldn't work. 

So there are 2 solutions

• A separate 12-24 DC supply
• A DC/DC konverter with fix output, independent of the input, connected to the LPF-90 output and then supplying the Qubino dimmer

It ended up with the second solution because I found a mini DC/DC converter which did the job.
So dimming is done with my iPhone, via HomeKit, but switching the lamp ON/OFF is done with the ordinary wall switches. Adding another Z-Way/HomeKit switch on incoming 230 VAC would solve the problem if You like to remote control the LED lamp ON/OFF.