I am developing a DALI Control Device using STM32 board. I have already programmed the board and got some basic results, now I want to test my device with industry standard DALI Control Gear. For that, I need to connect my board to DALI Bus Power Supply as shown in the below figure.
I have bought a couple of DALI Click boards long back for my prototype design purposes. DALI Click board has Opto-coupler TPL181, which has the operating range of (5-48)V Supply voltage, 16mA Forward Current, 1mA Collector current and 3.75kV isolation voltage.
Now, I am confused whether I can use this DALI Click board as DALI PHY Board? Initially, I will be testing and re-programming my device for very few DALI Slaves (maybe up to 10) and according to standard, each DALI Slave can draw just 2mA. So, I am guessing that even if I use 10 DALI Devices I will be drawing 20mA from DALI Bus Power Supply which is maximum Forward current of TPL181 and my STM32 board or DALI Click board will be in no danger.
My questions are can I use this DALI Click Board as DALI PHY without causing any damage? and Will the each DALI Control Gear (LED Drivers, Lights etc.) draw just 2mA from DALI Power Supply, Is my guess above correct?
EDIT: The figure shows that DALI Power Supply is 18VDC, 200mA but it is actually 18V DC, 250mA! It was a mistake!