IEC 62386-252-2023 PDF

Full title and description

Digital addressable lighting interface - Part 252: Particular requirements - Energy reporting (device type 51). This part of IEC 62386 defines the data structures, memory-bank layout and device-level rules for reporting energy and power information from DALI control gear (device type 51), building on the general DALI system requirements in the IEC 62386 series.

Abstract

IEC 62386-252:2023 specifies how control gear compliant with IEC 62386-102 must expose energy-related information (active energy/power, optional apparent and load‑side values) via defined memory banks and variables, including accuracy, rounding and counter‑overflow handling. The part is intended for use together with IEC 62386-101 and IEC 62386-102 to enable standardized energy reporting across DALI devices.

General information

• Status: Published international standard (IEC publication).
• Publication date: 12 April 2023.
• Publisher: International Electrotechnical Commission (IEC), TC 34 Lighting.
• ICS / categories: 29.140.50, 29.140.99.
• Edition / version: Edition 1.0 (2023).
• Number of pages: 41 pages.

(Information above derived from the IEC publication data and official metadata for IEC 62386-252:2023.)

Scope

Specifies the information related to energy reporting accessible through memory banks in control gear and the device‑level requirements for data exchange necessary to report energy and power values in a DALI system. It applies only to control gear that complies with IEC 62386-102 and is to be used together with the general system and control‑gear requirements in IEC 62386-101 and IEC 62386-102.

Key topics and requirements

• Definition of memory-bank structures (notably Memory Banks 202, 203 and 204) and declaration of variables used for energy reporting.
• Mandatory reporting of active energy and active power; optional reporting semantics for apparent energy/power and load‑side energy/power.
• Required accuracy classes, rounding rules and representation formats for stored and reported values.
• Rules to handle counters and limits to avoid overflow, including expected behavior when counters roll over.
• Device‑level data exchange constraints and compatibility requirements with IEC 62386 system addressing and communication models.
• Normative references and conformity requirements tying this part to other IEC 62386 parts and to test/measurement practices for energy values.

Typical use and users

Used by manufacturers of DALI control gear (drivers and ballasts) that implement device type 51 energy reporting, test laboratories and certification bodies validating DALI energy features, lighting system designers and integrators who require standardized energy telemetry, and building energy management and IoT system vendors integrating DALI energy data into higher‑level analytics and metering systems.

Related standards

Directly related to other parts of the IEC 62386 series, especially IEC 62386-101 (General requirements - system components) and IEC 62386-102 (General requirements - control gear), which set the system and control‑gear context for this part. This part has been adopted as EN IEC 62386-252:2023 in the European system.

Keywords

DALI, IEC 62386, energy reporting, device type 51, memory bank, control gear, energy metering, active energy, apparent power, rounding, overflow handling.

FAQ

Q: What is this standard?

A: IEC 62386-252:2023 is the part of the IEC 62386 DALI series that specifies particular requirements for energy reporting from control gear classified as device type 51.

Q: What does it cover?

A: It covers the memory‑bank layout, variable definitions, data formats, accuracy/rounding rules, and device‑level data exchange requirements needed for standardized reporting of energy and power values (active mandatory; apparent and load‑side optional). It is intended to be used with IEC 62386-101 and IEC 62386-102.

Q: Who typically uses it?

A: Manufacturers of DALI control gear, test and certification bodies, lighting system designers and integrators, building energy management and IoT vendors that consume DALI energy telemetry.

Q: Is it current or superseded?

A: It is a current, published International Standard (edition 1.0) released in April 2023; the IEC metadata lists a stability date indicating expected stability through 2029.

Q: Is it part of a series?

A: Yes — it is one part of the IEC 62386 series (Digital Addressable Lighting Interface) and is meant to be used alongside other parts such as IEC 62386-101 and IEC 62386-102.

Q: What are the key keywords?

A: DALI, energy reporting, device type 51, memory bank, control gear, active energy, apparent power, IEC 62386.