IEC 62386-102:2022

Overview

IEC 62386-102:2022 is Part 102 of the IEC 62386 series for the Digital Addressable Lighting Interface (DALI). This third edition defines the general requirements for control gear that are controlled by digital signals in electronic lighting equipment. It updates the previous edition (2014 + Amendment 2018) and introduces technical revisions such as updated scope and references, added memory bank reading of multi-byte values, revised memory bank rules, non‑volatile memory (NVM) save time, and added bus unit configuration. This standard underpins reliable, interoperable DALI control gear design and operation.

Key Topics and Technical Requirements

• Scope and general requirements for DALI control gear (electronic drivers and modules).
• Electrical specification and interface bus power supply requirements to ensure safe, stable operation.
• Transmission protocol structure and timing (including 16‑bit frame encoding, address and opcode definitions).
• Method of operation: control gear phases, dimming curves, calculating target levels, fading, fade rate and extended fade time behavior.
• Memory banks: memory map, selecting, reading/writing, memory bank 0, protectable locations, optional and manufacturer-specific banks, and reserved memory banks.
• Non-volatile memory (NVM) behavior including NVM save time and persistence of variables. Note: the SAVE PERSISTENT VARIABLES instruction has been removed in this edition.
• Commands and queries: level instructions (ON/OFF/UP/DOWN/STEP), configuration instructions (reset, set levels, scenes), and status queries.
• Assigning short addresses, scene management and current bus unit configuration for commissioning and runtime control.
• Failure modes, reset behavior, power-on levels, and status reporting for robust system diagnostics.

Practical Applications

IEC 62386-102:2022 is essential for:

• Lighting control gear manufacturers designing DALI-compliant drivers, LED modules, and control interfaces.
• Firmware and hardware engineers implementing protocol stacks, memory management and fade/dimming algorithms.
• System integrators and lighting designers who need predictable device behavior for commissioning scenes and groups.
• Test labs and compliance bodies validating interoperability, electrical safety and protocol conformance.
• Specifiers and project managers writing procurement and installation specifications for smart lighting systems.

Related Standards

• Other parts of the IEC 62386 (DALI) series cover device types, physical layers and application controllers.
• DALI/IEC ecosystem documents (e.g., DALI-2 profiles) provide complementary device and system-level interoperability guidance.

Keywords: IEC 62386-102:2022, DALI, digital addressable lighting interface, control gear, memory banks, NVM save time, fade time, transmission protocol, bus unit configuration.