DALI Installation Requirements

System requirements for DALI are few and are classified as follows:

DALI BUS POWER SUPPLY

The first mandatory system requirement is the DALI bus power supply. This device is current limited and enables DALI devices to communicate on the bus without having to use their own power.

One of the early prerequisites of DALI was that the bus could be wired alongside the mains supply without any need for special segregation. The simplest way to achieve this was ensuring that the DALI wires were optically isolated away from the internal circuitry of a DALI device or controller.

The process of optically isolating the DALI control signal in essence created a problem of supplying power to the bus. This problem was solved with the introduction of a DALI bus power supply, this allows for DALI devices to utilize the bus power to communicate on the bus.

DALI DEVICES

The next requirement for a DALI system is to install a DALI device to be controlled. DALI devices are available to control almost every light source or even blind controllers or relays. An installer or designer can choose to have as many as 64 DALI devices connected to a single DALI bus.

DALI CONTROLER

The final component required to get a DALI system working is a DALI controller. A controller can be as simple as a DALI group controller, DALI scene controller, DALI sensor or even a lighting control system that can communicate to the DALI device