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DALI Alliance publishes Part 254 specification for extended emergency data

June 28, 2023

The DALI Alliance (also known as DiiA) has published a new DiiA Specification entitled “Part 254 – Particular requirements for control gear – Extended emergency data (device type 53)”.

This standard specifies memory banks containing information related to self-contained emergency control gear (device type 1 or DT1), including battery and luminaire data.

This standard builds on the Digital Addressable Lighting Interface as specified in the IEC62386 series of standards, by adding specific requirements to address data exchange.

Part 254 is available to DALI Alliance members only.

>> Download Part 254 (requires member login)

Part 254 is intended for control gear that support DT1 – i.e. control gear for self-contained emergency lighting, as specified in Part 202. However, Part 254 does not support DT19 (control gear for centrally supplied emergency operation, Part 220).

As specified in Part 254, memory bank 209 provides measurement and counts related to the battery of the emergency control gear.

Memory bank 210 is reserved for use by an OEM (original equipment manufacturer, e.g. a luminaire manufacturer) to store additional information related to emergency lighting.

Transfer to IEC

The DALI Alliance (DiiA) writes and maintains new specifications that define additional DALI features and functions, building on the international standard IEC 62386. 

DiiA Specifications are transferred to IEC, for publication as new Parts of IEC 62386. Several DiiA Specifications (Part 150, and Parts 250-253 inclusive) have been adopted and published by IEC – see News

The DALI Alliance intends to withdraw the corresponding DiiA Specifications – Parts 150, 250, 251, 252 and 253 – on October 31, 2023.


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