How to locate and repair a DALI Bus Fault
When you enter scan for devices - if you get a DALI Bus Fault - then you have either:
a) a short on the DALI bus in one of the devices
b) a failed DALI power supply
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The DALI bus is powered by the Hub. There are two power levels, 80 mA and 240 mA
80 mA is fine for most projects - if there are more than 40 DALI devices, then 240 mA is needed
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Visit Advanced
Click on DALI Bus Power status
the voltage should be over 14 volts, with the current less than 260 mA
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Visit Logs
The DALI bus status is reported in real time as follows ( x can be 1 to 4 )
D0x no power or short
D1x bus shorted to 12v or similar
D2x bus OK
D3x bus not tested yet
D4x bus shorted to 24 volts or higher
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Locatiing:
Unplug all PSE devices except one
Activate one PSE at a time to see if the bus returns to D2x status
unplug all loads, insert until one load causes the problem.
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