DALI BUS POWER

The DALI bus is a shared Power and DALI bus. A minimum of 14 volts is recommended for operation, with up to 260 mA allowed. Operation at lower currents is acceptable as long as the voltage does not fall below 14 volts.

DALI devices can be powered by the bus (up to 4 mA each; most devices require less than 2 mA). This allows shared power and data on two wires. Some DALI masters provide power; others do not. Below is a list of power supply options we have tested:

Device Supplying Power Current Supplied Disable Power Max Count of DALI Devices Max Distance (22 AWG) Max Distance (18 AWG)
AL-PWS-8D65 mAJumper32350 ft1200
AL-DALI-HAT v165 mAJumper32350 ft1200
ATX LED Hub / AL-DALI-HAT v2
3 modes / Auto detect
Off / 80 mA / 220 mASoftware40 / 64300 ft / 80 ft1000 / 330
AL-Struct-1265 mAJumper32350 ft1200
RELIV4-16260 mANo6480 ft330

* Multiple DALI power supplies can be wired in parallel up to 260 mA total. If the RELIV4-16 is used, disable power in the ATX LED product.

Hardware Version Notes:

  • AL-WS-DR2 V1 and V2 can only drive 140 mA
  • AL-WS-010V needs 6 mA to operate
  • AL-DALI-8B multiswitch needs 3 mA + 1 mA per LED active
  • AL-DALI-HAT-2I has no power supply built in
DALI Bus Power Topology Diagram