Tunable white light is a luminaire which can provide different colour temperatures, from cool white light to warm white light. This can be used together with a Scene Controller for aesthetic effect, or it can be used with a time-based controller to gradually change the colour temperature throughout the day for physiological benefits i.e. Circadian Rhythms.

Firmware

Most All Wireless Radio Devices can send DT8 Messages. Some need special firmware:

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230v G2 Node (with Special Software – v3.177 at time of writing)

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All D4i Nodes (standard software)

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All Batten Mounts (standard software)

They may need a software update depending on their manufacturing date. This can be updated during luminaire testing in the factory or on site using the commissioning software.

Note - E3M (Emergency Monitor) does not have a DALI output and

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cannot control DT8.

Means of Control

Having created tunable white devices with DT8 drivers as above, a means of controlling the colour is required. Two methods are currently offered.

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