The DALI Standard
DALI’s ‘open protocol’ means, in principle, a DALI lighting system can be composed of components from multiple manufacturers, all working from the same standard. As with all products however, individual DALI components can still vary considerably in quality and longevity according to supplier.
It is important to ensure that DALI products are not just DALI “compatible” but are “DALI compliant”. Electrical manufacturers supplying DALI compliant products must be DALI members and their products must bear the DALI trademark.
The DALI standard covers not just ballasts but control gear including LED drivers, switching devices, emergency inverters, colour controllers, and the control devices such as presence detectors, lux level sensors, switches, etc, as well as bus power supply requirements.
To be confident that your DALI system will work to its optimum, ensure that the supposed DALI complaint products have been properly certified. This is easily checked via the website of the Digital Illumination Interface Alliance. Using only DALI certified products ensures genuine inter-operability and seamless integration.