IEC 62386-150:2023

IEC 62386-150
®

Edition 1.0 2023-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Digital addressable lighting interface –
Part 150: Particular requirements – Auxiliary power supply

Interface d'éclairage adressable numérique –
Partie 150: Exigences particulières – Alimentation électrique auxiliaire

IEC 62386-150:2023-03(en-fr)

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IEC 62386-150

®


Edition 1.0 2023-03




INTERNATIONAL



STANDARD




NORME


INTERNATIONALE
colour

inside










Digital addressable lighting interface –

Part 150: Particular requirements – Auxiliary power supply



Interface d'éclairage adressable numérique –

Partie 150: Exigences particulières – Alimentation électrique auxiliaire
















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 29.140.50; 29.140.99 ISBN 978-2-8322-6627-4




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® Registered trademark of the International Electrotechnical Commission
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– 2 – IEC 62386-150:2023 © IEC 2023
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 AUX power supply . 7
4.1 General . 7
4.2 Marking of the interface . 8
4.3 Electrical specification of AUX power supply . 8
4.4 Safety rating . 9
4.5 Output overload and short circuit protection . 10
Bibliography . 11

Figure 1 – IEC 62386 graphical overview . 5
Figure 2 – AUX power supply combined with a bus unit and a bus power supply . 8

Table 1 – Electrical characteristics of an AUX power supply . 9

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IEC 62386-150:2023 © IEC 2023 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

DIGITAL ADDRESSABLE LIGHTING INTERFACE –

Part 150: Particular requirements – Auxiliary power supply

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 62386-150 has been prepared by IEC technical committee 34: Lighting. It is an International
Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
34/1009/FDIS 34/1027/RVD

Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This Part 150 of IEC 62386 is intended to be used in conjunction with:
• Part 101, which contains general requirements for system components;
• Part 102, which contains general requirements for control gear.

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– 4 – IEC 62386-150:2023 © IEC 2023
A list of all parts in the IEC 62386 series, published under the general title Digital addressable
lighting interface, can be found on the IEC website.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The "colour inside" logo on the cover page of this document indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.

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IEC 62386-150:2023 © IEC 2023 – 5 –
INTRODUCTION
IEC 62386 contains several parts, referred to as series. The IEC 62386 series specifies a bus
system for control by digital signals of electronic lighting equipment. The IEC 62386-1xx series
includes the basic specifications. Part 101 contains general requirements for system
components, Part 102 extends this information with general requirements for control gear and
Part 103 extends it further with general requirements for control devices. Part 104 and Part 105
can be applied to control gear or control devices. Part 104 gives requirements for wireless and
alternative wired system components. Part 105 describes firmware transfer. Part 150 gives
requirements for an auxiliary power supply which can be stand-alone, or built into control gear
or control devices.
The IEC 62386-2xx series extends the general requirements for control gear with lamp specific
extensions (mainly for backward compatibility with Edition 1 of IEC 62386) and with control gear
specific features.
The IEC 62386-3xx series extends the general requirements for control devices with input
device specific extensions describing the instance types as well as some common features that
can be combined with multiple instance types.
This first edition of IEC 62386-150 is intended to be used in conjunction with IEC 62386-101
and IEC 62386-102. The division of IEC 62386 into separately published parts provides for ease
of future amendments and revisions. Additional requirements will be added as and when a need
for them is recognized.
The setup of the standards is graphically represented in Figure 1 below.

Figure 1 – IEC 62386 graphical overview
When this part of IEC 62386 refers to any of the clauses of the other parts of the IEC 62386-1xx
series, the extent to which such a clause is applicable is specified. The other parts also include
additional requirements, as necessary.
All numbers used in this document are decimal numbers unless otherwise noted. Hexadecimal
numbers are given in the format 0xVV, where VV is the value. Binary numbers are given in the
format XXXXXXXXb or in the format XXXX XXXX, where X is 0 or 1; "x" in binary numbers
means "don't care".

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– 6 – IEC 62386-150:2023 © IEC 2023
The following typographic expressions are used:
Variables: variableName or variableName[3:0], giving only bits 3 to 0 of variableName;
Range of values: [lowest, highest];
Command: "COMMAND NAME".

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IEC 62386-150:2023 © IEC 2023 – 7 –
DIGITAL ADDRESSABLE LIGHTING INTERFACE –

Part 150: Particular requirements – Auxiliary power supply



1 Scope
This part of IEC 62386 specifies the minimum requirements for an auxiliary (AUX) power supply
that can be used to power a load, such as a sensor or communication device.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 62386-101:2022, Digital addressable lighting interface – Part 101: General requirements –
System components
IEC 62386-102, Digital addressable lighting interface – Part 102: General requirements –
Control gear
1
IEC 62386-250 , Digital addressable lighting interface – Part 250: Particular requirements –
Integrated power supply (device type 49)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62386-101 and
IEC 62386-102 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
AUX power supply
auxiliary power supply
unit providing a power supply for bus units
4 AUX power supply
4.1 General
An AUX power supply as specified in this document provides 24 V direct current to power a
controller, an occupancy sensor, a photo sensor or other device. It can eliminate the need for
an AC/DC supply and the associated need for surge suppression and an electro-magnetic
interference (EMI) filter in such devices.
___________
1
Under preparation. Stage at the time of publication IEC FDIS 62386-250:2023.

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– 8 – IEC 62386-150:2023 © IEC 2023
Overview of the features of an AUX power supply (informative):
• The AUX power supply can provide an average power of 3 W and a pulse power of 6 W.
• Average output voltage: the level of 24 V ±10 % will be held for loads between 0,1 W and
6 W peak.
• Maximum output voltage does not exceed 30 V under permitted load conditions including
open circuit.
• Start-up time: the AUX power supply will reach 90 % of the nominal specified voltage level
within 600 ms after applying mains power.
The AUX power supply may be a standalone unit or may be integrated with any combination of
control gear, control device or bus power supply. Figure 2 shows an AUX power supply
combined with a bus unit and a bus power supply.

Figure 2 – AUX power supply combined with a bus unit and a bus power supply
4.2 Marking of the interface
The interface shall be marked with "+24 V" and "GND". In case the AUX power supply is
integrated with a bus power supply, then the DA− common node shall be shared with GND
(ground).
4.3 Electrical specification of AUX power supply
Table 1 specifies the relevant characteristics for the AUX power supply.

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IEC 62386-150:2023 © IEC 2023 – 9 –
Table 1 – Electrical characteristics of an AUX power supply
Rated Min. Max.
Description Conditions
value value value
0,1 W ≤ P ≤ 6,0 W;
Load
Operating voltage, U
24,0 V 21,6 V 26,4 V
Aux_nom
Including load steps
21,6 V ≤ U ≤ 26,4 V;
High frequency ripple of operating
Aux
1,0 V

pp
voltage, U
f > 10 kHz
Aux_pk-pk
ripple
Voltage in no-load condition, U P < 0,1 W
 30,0 V
Aux_max Load
Average output power capability of the power 21,6 V ≤ U ≤ 26,4 V;
Aux
3,0 W
source, P
Supply_avg averaging period 6 ms
21,6 V ≤ U ≤ 26,4 V;
Aux
Pulsed output power capability of the power
6,0 W
t ≤ 2,2 ms; repetitive,
source, P
pulse
Supply_pk
a
see footnote
U to reach 21,6 V;
Aux
I ≤ 0,16 A;
Load
Start-up time, t
 0,6 s
s
Mains applied at any phase
angle
21,6 V ≤ U ≤ 26,4 V
Aux
Average output power ≤
Supply interruption time with output P
Load_avg
10 ms
maintained, t
Pulsed output power ≤
interrupt
P ;
Load_pk
b
See footnote
Key
U output voltage
Aux
I output current
Load
P output power
Load
P average output power
Load_avg
P peak output power
Load_pk
f ripple frequency
ripple
t pulse time
pulse
a
Possible duty-cycle and peak value for such pulsed power supply are limited by the specified average power
P .
Supply_avg
b
U shall not fall below 21,6 V or exceed 26,4 V during or aft
...