IEC 62386-101:2022
(Main)Digital addressable lighting interface - Part 101: General requirements - System components
Digital addressable lighting interface - Part 101: General requirements - System components
IEC 62386-101:2022 is applicable to system components in a bus system for control by digital signals of electronic lighting equipment. The control methods, algorithms and data exchange methods of application controllers used for lighting control are not within the scope of the IEC 62386 series. EMC requirements are not within the scope of the IEC 62386 series. This third edition cancels and replaces the second edition published in 2014 and Amendment 1:2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
the scope has been updated;
safety and earthing have been updated and extended;
references have been updated;
the use of bus-power and external-power has been clarified;
polarity sensitivity for bus units including a bus power supply has been updated;
frame sizes of 32 bits are no longer reserved.
Interface d'éclairage adressable numérique - Partie 101: Exigences générales - Composants de système
L'IEC 62386-101:2022 s'applique aux composants de système dans un système à bus pour la commande par des signaux numériques des appareils d'éclairage électroniques. Les méthodes et algorithmes de commande et les méthodes d'échange de données des contrôleurs d'application utilisés pour la commande d'éclairage ne relèvent pas du domaine d'application de la série IEC 62386. Les exigences relatives à la compatibilité électromagnétique (CEM) ne relèvent pas du domaine d'application de la série IEC 62386. Cette troisième édition annule et remplace la seconde édition parue en 2014 et l'Amendement 1:2018. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
le domaine d'application a été mis à jour;
les paragraphes relatifs à la sécurité et à la mise à la terre ont été mis à jour et élargis;
les références ont été mises à jour;
l'utilisation de l'alimentation du bus et de l'alimentation externe a été clarifiée;
la sensibilité à la polarité des bus, y compris l'alimentation électrique du bus, a été mise à jour;
les tailles de trames de 32 bits ne sont plus réservées.
General Information
Relations
Overview
IEC 62386-101:2022 - part of the IEC 62386 series for the Digital Addressable Lighting Interface (DALI) - specifies general requirements for system components in a bus system used to control electronic lighting equipment by digital signals. This third edition (2022) updates scope, safety and earthing, bus-power vs external-power rules, polarity sensitivity for bus units that include bus power supplies, and frame size reservations (32-bit frames are no longer reserved). The standard does NOT cover application controller control algorithms or EMC requirements.
Key topics and technical requirements
- Scope and system architecture: Defines bus units, single-master and multi‑master controllers, input devices, and sharing of interfaces.
- Electrical safety and earthing: Updated requirements for insulation, electric strength and touch current limitations, and guidance on earthing the bus.
- Bus power supply: Requirements for marking, voltage and current ratings, dynamic behavior, timing, short‑circuit behavior and how multiple or integrated bus power supplies interact.
- Signal and interface specifications: Marking, capacitors between interface and earth, signal voltage/current ratings, and polarity sensitivity for bus-powered units.
- Transmission protocol and frame structure: Frame types, bit encoding, start/stop encoding and the removal of reserved 32‑bit frame sizes.
- Timing and collision handling: Detailed timing for transmitters and receivers (single- and multi‑master), collision avoidance/detection/recovery, receiver timing violations and sequence timing.
- Operational rules: How frames and commands are processed, transactions, send‑twice frames, command iteration and shared-interface usage.
- Testing & annexes: Test procedures plus informative annexes on wiring, system architectures, collision detection, current calculations, communication layers and touch current.
Applications and who uses it
IEC 62386-101 is essential for:
- Lighting control manufacturers (DALI bus units, power supplies, control gear) designing compliant devices.
- System integrators and lighting designers specifying reliable, interoperable DALI installations.
- Test laboratories and certification bodies validating electrical safety, bus power behavior and protocol conformity.
- Installers and facility managers needing guidance on wiring, earthing and bus power planning.
This standard ensures interoperability and safe operation of digital lighting bus systems, enabling predictable behavior across multi‑vendor DALI installations.
Related standards
- Other parts of the IEC 62386 series (device type parts and application-level specifications) complement Part 101. Note: EMC and application-controller algorithms are intentionally outside the scope of this part.
Keywords: IEC 62386-101, DALI, digital addressable lighting interface, bus power supply, lighting control, bus units, transmission protocol, timing, safety, earthing.
Standards Content (Sample)
IEC 62386-101 ®
Edition 3.0 2022-11
COMMENTED VERSION
INTERNATIONAL
STANDARD
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Digital addressable lighting interface –
Part 101: General requirements – System components
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IEC 62386-101 ®
Edition 3.0 2022-11
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
Digital addressable lighting interface –
Part 101: General requirements – System components
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.140.50; 29.140.99 ISBN 978-2-8322-6101-9
– 2 – IEC 62386-101:2022 CMV © IEC 2022
CONTENTS
FOREWORD .7
INTRODUCTION . 10
1 Scope . 12
2 Normative references . 12
3 Terms and definitions . 13
4 General . 18
4.1 Purpose . 18
4.2 Version number . 18
4.3 System structure and architecture . 18
4.4 System information flow . 19
4.5 Command types. 19
4.6 Bus units . 20
4.6.1 Transmitters and receivers in bus units . 20
4.6.2 Control gear . 20
4.6.3 Input device . 20
4.6.4 Single-master application controller . 21
4.6.5 Multi-master application controller . 21
4.6.6 Sharing an interface . 21
4.6.7 Power for operation . 22
4.7 Bus power supply and load calculations . 23
4.7.1 Current demand coverage . 23
4.7.2 Maximum signal current compliance . 23
4.7.3 Simplified system calculation . 23
4.8 Wiring . 23
4.8.1 Wiring structure . 23
4.8.2 Wiring specification . 23
4.9 Electrical safety requirements . 24
4.9.1 General . 24
4.9.2 Insulation . 24
4.9.3 Electric strength . 24
4.9.4 Limitation of the touch current from the device to the bus . 24
4.10 Earthing of the bus . 25
4.11 Power interruptions at bus units . 25
4.11.1 Different levels of power interruptions . 25
4.11.2 Short power interruptions of external power supply . 25
4.11.3 External power cycle . 26
4.11.4 Short interruptions of bus power supply . 26
4.11.5 Bus power down . 26
4.11.6 System start-up timing . 26
5 Electrical specification . 28
5.1 General . 28
5.2 Marking of the interface . 28
5.3 Capacitors between the interface and earth . 28
5.4 Signal voltage rating . 28
5.5 Signal current rating . 29
5.6 Marking of bus powered bus unit . 29
5.7 Signal rise time and fall time . 30
6 Bus power supply . 31
6.1 General . 31
6.2 Marking of the bus power supply terminals . 31
6.3 Capacitors between the interface and earth . 31
6.4 Voltage rating . 31
6.5 Current rating . 32
6.5.1 General current rating . 32
6.5.2 Single bus power supply current rating . 32
6.5.3 Integrated bus power supply current rating . 32
6.5.4 Dynamic behaviour of the bus power supply . 32
6.6 Bus power supply timing requirements . 34
6.6.1 Short power supply interruptions . 34
6.6.2 Short circuit behaviour . 34
7 Transmission protocol structure . 35
7.1 General . 35
7.2 Bit encoding . 35
7.2.1 Start bit and data bit encoding . 35
7.2.2 Stop condition encoding. 35
7.3 Frame description . 35
7.4 Frame types . 36
7.4.1 16-bit forward frame . 36
7.4.2 24-bit forward frame . 36
7.4.3 32-bit forward frame . 36
7.4.4 Reserved forward frame. 36
7.4.5 Backward frame . 36
7.4.6 Proprietary forward frames. 36
8 Timing . 37
8.1 Single-master transmitter timing . 37
8.1.1 Single-master transmitter bit timing . 37
8.1.2 Single-master transmitter frame sequence timing. 37
8.2 Receiver timing . 38
8.2.1 Receiver bit timing . 38
8.2.2 Receiver bit timing violation . 39
8.2.3 Receiver frame size violation . 40
8.2.4 Receiver frame sequence timing . 40
8.2.5 Reception of backward frames . 40
8.3 Multi-master transmitter timing . 41
8.3.1 Multi-master transmitter bit timing . 41
8.3.2 Multi-master transmitter frame sequence timing . 41
9 Method of operation . 42
9.1 Dealing with frames and commands . 42
9.1.1 General . 42
9.1.2 Frame received or rejected . 43
9.1.3 Frame accepted or ignored . 43
9.1.4 Command accepted or ignored. 43
9.1.5 Command executed or discarded . 43
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9.2 Collision avoidance, collision detection and collision recovery . 44
9.2.1 General . 44
9.2.2 Collision avoidance . 44
9.2.3 Collision detection . 44
9.2.4 Collision recovery . 46
9.3 Transactions. 47
9.4 Send-twice forward frames and send-twice commands . 47
9.5 Command iteration . 48
9.6 Usage of a shared interface . 48
9.6.1 General . 48
9.6.2 Backward frames . 49
9.6.3 Forward frames . 49
9.7 Use of multiple bus power supplies . 49
9.7 Command execution .
10 Declaration of variables . 49
11 Definition of commands . 49
12 Test procedures .
Annex A (informative) Background information for systems . 50
A.1 Wiring information . 50
A.2 System architectures . 51
A.2.1 General . 51
A.2.2 Single-master architecture . 51
A.2.3 Multi-master architecture with one application controller . 52
A.2.4 Multi-master architecture with more than one application controller . 53
A.2.5 Multi-master architecture with integrated input device . 54
A.2.6 Multi-master architecture with integrated input device and power supply . 55
A.3 Collision detection . 56
A.4 Timing definition explanations . 57
A.4.1 General . 57
A.4.2 Receiver timing . 57
A.4.3 Transmitter timing. 57
A.4.4 Grey areas . 58
A.5 Maximum current consumption calculation explanation . 58
A.5.1 Single bus power supply . 58
A.5.2 Multiple bus power supplies . 59
A.5.3 Redundant bus power supplies . 60
A.6 Communication layer overview . 61
A.6.1 General . 61
A.6.2 Physical layer . 62
A.6.3 Data link layer . 62
A.6.4 Network layer . 62
A.6.5 Transport layer . 62
A.6.6 Session layer . 62
A.6.7 Presentation layer . 62
A.6.8 Application layer . 62
A.7 Effects on of combining version number 1 and version number 2.y devices. 62
Annex B (informative) Touch current . 64
Bibliography . 65
List of comments . 66
Figure 1 – IEC 62386 graphical overview . 11
Figure 2 – System structure example . 19
Figure 3 – Communication between bus units (example) . 19
Figure 4 – Example of a shared interface . 22
Figure 5 – Start-up timing example . 27
Figure 6 – Maximum signal rise and fall time measurements . 30
Figure 7 – Minimum signal rise and fall time measurements. 31
Figure 8 – Bus power supply current behaviour . 33
Figure 9 – Bus power supply voltage behaviour . 34
Figure 10 – Frame example . 35
Figure 11 – Bi-phase encoded bits . 35
Figure 12 – Bit timing example . 37
Figure 13 – Settling time illustration . 38
Figure 14 – Receiver timing decision example . 39
Figure 15 – Dealing with frames and commands. 43
Figure 16 – Collision detection timing decision example . 46
Figure 17 – Collision recovery example . 47
Figure A.1 – Single-master architecture example . 52
Figure A.2 – Multi-master architecture example with one application controller . 53
Figure A.3 – Multi-master architecture example with two application controllers . 54
Figure A.4 – Multi-master architecture example with integrated input device . 55
Figure A.5 – Multi-master architecture example with integrated input device and bus
power supply . 56
Figure A.6 – Collision detection timing diagram . 57
Figure A.7 – Transmitter and receiver timing illustration . 58
Figure A.8 – Bus power supply current values . 59
Figure A.9 – Current demand coverage . 59
Figure A.10 – Combination of four bus power supplies . 60
Figure A.11 – Redundant bus power supplies . 60
Figure B.1 – Touch current from a bus unit . 64
Figure B.2 – Summation of touch currents from several bus units . 64
Table 1 – System components . 18
Table 2 – Transmitters and receivers in bus units . 20
Table 3 – Power-interruption timing of external power . 25
Table 4 – Power-interruption timing of bus power . 25
Table 5 – Short power interruptions . 26
Table 6 – Start-up timing . 27
Table 7 – System voltage levels . 28
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Table 8 – Receiver voltage levels . 29
Table 9 – Transmitter voltage levels . 29
Table 10 – Current rating. 29
Table 11 – Signal rise and fall times . 30
Table 12 – Bus power supply output voltage . 32
Table 13 – Bus power supply current rating . 32
Table 14 – Bus power supply dynamic behaviour . 33
Table 15 – Short circuit timing behaviour . 34
Table 16 – Transmitter bit timing . 37
Table 17 – Transmitter settling time values . 38
Table 18 – Receiver timing starting at the beginning of a logical bit . 39
Table 19 – Receiver timing starting at an edge inside of a logical bit . 39
Table 20 – Receiver settling time values . 40
Table 21 – Multi-master transmitter bit timing . 41
Table 22 – Multi-master transmitter settling time values . 42
Table 23 – Checking a logical bit, starting at an edge at the beginning of the bit . 45
Table 24 – Checking a logical bit, starting at an edge inside the bit . 45
Table 25 – Collision recovery timing . 46
Table 26 – Transmitter command iteration timing . 48
Table 27 – Receiver command iteration timing . 48
Table A.1 – Maximum cable length . 51
Table A.2 – OSI layer model of the IEC 62386 series . 61
Table A.3 – Effects on of combining version number 1 and version number 2.y devices . 63
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL ADDRESSABLE LIGHTING INTERFACE –
Part 101: General requirements –
System components
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
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This commented version (CMV) of the official standard IEC 62386-101:2022 edition 3.0
allows the user to identify the changes made to the previous IEC 62386-101:2014+
AMD1:2018 CSV edition 2.1. Furthermore, comments from IEC TC 34 experts are
provided to explain the reasons of the most relevant changes, or to clarify any part of
the content.
A vertical bar appears in the margin wherever a change has been made. Additions are in
green text, deletions are in strikethrough red text. Experts' comments are identified by
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This publication contains the CMV and the official standard. The full list of comments is
available at the end of the CMV.
– 8 – IEC 62386-101:2022 CMV © IEC 2022
IEC 62386-101 has been prepared by IEC technical committee 34: Lighting. It is an
International Standard.
This third edition cancels and replaces the second edition published in 2014 and
Amendment 1:2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the scope has been updated;
b) safety and earthing have been updated and extended;
c) references have been updated;
d) the use of bus-power and external-power has been clarified;
e) polarity sensitivity for bus units including a bus power supply has been updated;
f) frame sizes of 32 bits are no longer reserved.
The text of this International Standard is based on the following documents:
Draft Report on voting
34/947/FDIS 34/988/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 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/standardsdev/publications.
This Part 101 of IEC 62386 is intended to be used in conjunction with:
• Part 102, which contains general requirements for the relevant product type (control gear),
and with the appropriate Part 2xx (particular requirements for control gear);
• Part 103, which contains general requirements for the relevant product type (control
devices), and the appropriate Part 3xx (particular requirements for control devices);
• Part 104, which contains general requirements for wireless and alternative wired system
components;
• Part 105, which contains particular requirements for firmware transfer for control gear and
control devices.
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.
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.
– 10 – IEC 62386-101:2022 CMV © IEC 2022
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. Parts 104 and 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 second third edition of IEC 62386-101 is intended to be used in conjunction with
IEC 62386-102:2014 and IEC 62386-102:2014/AMD1:— and with the various parts that make
up the IEC 62386-2xx series for control gear, together with IEC 62386-103:2014 and
IEC 62386-103:2014/AMD1— and the various parts that make up the IEC 62386-3xx series
of particular requirements for control devices. The division 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.
2xx 2xx 2xx 2xx 2xx 3xx 3xx 3xx 3xx 3xx
102 General requirements - 103 General requirements -
Control gear Control devices
101 General requirements -
System components
IEC
Figure 1 – IEC 62386 graphical overview 1
When this part of IEC 62386 refers to any of the clauses of the other two parts of the
IEC 62386-1xx series, the extent to which such a clause is applicable and the order in which
the tests are to be performed are 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".
– 12 – IEC 62386-101:2022 CMV © IEC 2022
DIGITAL ADDRESSABLE LIGHTING INTERFACE –
Part 101: General requirements –
System components
1 Scope
This part of IEC 62386 is applicable to system components in a bus system for control by
digital signals of electronic lighting equipment which is in line with the requirements of
IEC 61347 (all parts), with the addition of DC supplies.
NOTE Tests in this standard are type tests. Requirements for testing individual bus units during production are
not included.
The control methods, algorithms and data exchange methods of application controllers used
for lighting control are not within the scope of the IEC 62386 series. EMC requirements are
not within the scope of the IEC 62386 series. 2
2 Normative references 3
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 61347-1:2015, Lamp controlgear – Part 1: General and safety requirements
IEC 61347-1:2015/AMD1:2017
IEC 62386-102:20142022, Digital addressable lighting interface – Part 102: General
requirements – Control gear
IEC 62386-102:2014/AMD1:—
IEC 62386-103:20142022, Digital addressable lighting interface – Part 103: General
requirements – Control devices
IEC 62386-103:2014/AMD1:—
IEC 62386-104, Digital addressable lighting interface – Part 104: General requirements –
Wireless and alternative wired system components
IEC 62386-105, Digital addressable lighting interface – Part 105: Particular requirements for
control gear and control devices – Firmware Transfer
IEC 62386-2xx (all parts), Digital addressable lighting interface – Part 2xx: Particular
requirements for control gear
IEC 62386-3xx (all parts), Digital addressable lighting interface – Part 3xx: Particular
requirements for control devices
___________
Under preparation. Stage at the time of publication: IEC DECFDIS 62386-102/AMD1:2018.
Under preparation. Stage at the time of publication: IEC RFDIS 62386-103/AMD1:2018.
IEC 61000-4-11, Electromagnetic compatibility (EMC) – Part 4-11:Testing and measurement
techniques – Voltage dips, short interruptions and voltage variations immunity tests for
equipment with input current up to 16 A per phase
IEC 60664-1, Insulation coordination for equipment within low-voltage supply systems –
Part 1: Principles, requirements and tests
IEC 60990:2016, Methods of measurement of touch current and protective conductor current
IEC 61643-11, Low-voltage surge protective devices – Part 11: Surge protective devices
connected to low-voltage power systems – Requirements and test methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
active state
phase of low level voltage during a transmission
Note 1 to entry: Noise and short pulses may be ignored and therefore do not change the state.
3.2
advanced bus power supply
bus power supply capable of checking the bus for fault conditions before switching on its
output continuously
Note 1 to entry: Examples of fault conditions are mains voltage connected to the bus or short circuit of the bus.
3.3
application controller
control device that is connected to the bus and sends commands in order to control input
devices and/or control gear connected to the same bus
3.4
backward frame
frame used for backward transmission
3.5
backward transmission
transmission of data as a reply to and triggered by a forward transmission
3.6
bus
two-wire connection line carrying power and frames
3.7
bus powered
drawing the power for operation from the bus
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3.8
bus power down
bus power interruption longer than 45 ms
3.9
bus power interruption
abnormal condition where the bus voltage is in the receiver low level voltage range, but not
because of a transmitter being active
3.10
bus power supply
unit feeding defined energy to the bus
3.11
bus unit
logical unit or combination of logical units, containing one transmitter and optionally one
receiver
Note 1 to entry: See 4.6.6.
3.12
charge overshoot
product of current overshoot time and current overshoot amplitude
Note 1 to entry: Within this standard the charge overshoot is a simple multiplication of the current overshoot time
and the current overshoot amplitude.
3.13
collision
situation in which two or more transmitters are transmitting simultaneously
Note 1 to entry: Collisions can go unnoticed if the transmission timing is sufficiently similar and the transmitted
frame content is identical.
3.14
command
forward transmission with appropriate information content, intended to cause a reaction in the
receiver
Note 1 to entry: A receiver, having decoded a command can, when appropriate, decide to ignore the command.
Note 2 to entry: Refer to IEC 62386-102, IEC 62386-103, IEC 62386-104, IEC 62386-105, the IEC 62386-2xx
series and IEC 62386-3xx series for command definitions.
3.15
control device
device that is connected to the bus and sends commands to other devices (for example
control gear) connected to the same bus
Note 1 to entry: Control devices can also receive commands and backward transmissions. Control devices can
contain application controllers and/or input devices.
3.16
control gear
device that is connected to the bus and receives commands in order to control at least one
output in a direct or indirect way
Note 1 to entry: The lamp controlgear described in IEC 61347-1 can cover control gear.
3.17
current overshoot time
time per bit during which the current supplied by the bus power supply is above the allowed
maximum of 250 mA after a transition from idle state to active state
Note 1 to entry: See 6.5.4.
3.18
destroy area
time slot where a valid frame cannot be guaranteed and therefore the frame has to be
invalidated ensured
3.19
edge
change from active state to idle state or vice versa
3.20
event message
command sent by a control device in order to distribute information on the bus
3.21
externally powered
drawing the power for operation from a separate power supply
Note 1 to entry: The separate power supply can be mains power, DC power, etc.
3.22
forward frame
frame used for forward transmission
3.23
forward frame priority
property of a forward frame used to prioritize access to the bus
3.24
forward transmission
transmission of data initiated by a control device
Note 1 to entry: See also 3.5.
3.25
frame
set of consecutive bits followed by a stop condition
Note 1 to entry: See Clause 8 for the timing definition of a stop condition.
3.26
grey area
time slot containing the decision point separating adjacent time slots
Note 1 to entry: A grey area indi
...
IEC 62386-101 ®
Edition 3.0 2022-11
INTERNATIONAL
STANDARD
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Digital addressable lighting interface –
Part 101: General requirements – System components
Interface d'éclairage adressable numérique –
Partie 101: Exigences générales – Composants de système
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IEC 62386-101 ®
Edition 3.0 2022-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Digital addressable lighting interface –
Part 101: General requirements – System components
Interface d'éclairage adressable numérique –
Partie 101: Exigences générales – Composants de système
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.50; 29.140.99 ISBN 978-2-8322-5964-1
– 2 – IEC 62386-101:2022 © IEC 2022
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 11
4 General . 16
4.1 Purpose . 16
4.2 Version number . 16
4.3 System structure and architecture . 16
4.4 System information flow . 17
4.5 Command types . 17
4.6 Bus units . 18
4.6.1 Transmitters and receivers in bus units . 18
4.6.2 Control gear . 18
4.6.3 Input device . 18
4.6.4 Single-master application controller . 19
4.6.5 Multi-master application controller . 19
4.6.6 Sharing an interface . 19
4.6.7 Power for operation . 20
4.7 Bus power supply and load calculations . 21
4.7.1 Current demand coverage . 21
4.7.2 Maximum signal current compliance . 21
4.7.3 Simplified system calculation . 21
4.8 Wiring . 21
4.8.1 Wiring structure . 21
4.8.2 Wiring specification . 21
4.9 Electrical safety requirements . 22
4.9.1 General . 22
4.9.2 Insulation . 22
4.9.3 Electric strength . 22
4.9.4 Limitation of the touch current from the device to the bus . 22
4.10 Earthing of the bus . 23
4.11 Power interruptions at bus units . 23
4.11.1 Different levels of power interruptions . 23
4.11.2 Short power interruptions of external power supply . 23
4.11.3 External power cycle . 24
4.11.4 Short interruptions of bus power supply . 24
4.11.5 Bus power down . 24
4.11.6 System start-up timing . 24
5 Electrical specification . 26
5.1 General . 26
5.2 Marking of the interface . 26
5.3 Capacitors between the interface and earth . 26
5.4 Signal voltage rating . 26
5.5 Signal current rating. 27
5.6 Marking of bus powered bus unit . 27
5.7 Signal rise time and fall time . 28
6 Bus power supply . 29
6.1 General . 29
6.2 Marking of the bus power supply terminals . 29
6.3 Capacitors between the interface and earth . 29
6.4 Voltage rating . 29
6.5 Current rating. 30
6.5.1 General current rating . 30
6.5.2 Single bus power supply current rating . 30
6.5.3 Integrated bus power supply current rating . 30
6.5.4 Dynamic behaviour of the bus power supply . 30
6.6 Bus power supply timing requirements . 32
6.6.1 Short power supply interruptions . 32
6.6.2 Short circuit behaviour . 32
7 Transmission protocol structure . 33
7.1 General . 33
7.2 Bit encoding . 33
7.2.1 Start bit and data bit encoding . 33
7.2.2 Stop condition encoding . 33
7.3 Frame description . 33
7.4 Frame types . 34
7.4.1 16-bit forward frame . 34
7.4.2 24-bit forward frame . 34
7.4.3 32-bit forward frame . 34
7.4.4 Reserved forward frame . 34
7.4.5 Backward frame . 34
7.4.6 Proprietary forward frames . 34
8 Timing . 35
8.1 Single-master transmitter timing . 35
8.1.1 Single-master transmitter bit timing. 35
8.1.2 Single-master transmitter frame sequence timing . 35
8.2 Receiver timing . 36
8.2.1 Receiver bit timing . 36
8.2.2 Receiver bit timing violation . 37
8.2.3 Receiver frame size violation . 38
8.2.4 Receiver frame sequence timing . 38
8.2.5 Reception of backward frames . 38
8.3 Multi-master transmitter timing . 39
8.3.1 Multi-master transmitter bit timing . 39
8.3.2 Multi-master transmitter frame sequence timing . 39
9 Method of operation . 40
9.1 Dealing with frames and commands . 40
9.1.1 General . 40
9.1.2 Frame received or rejected . 41
9.1.3 Frame accepted or ignored . 41
9.1.4 Command accepted or ignored . 41
9.1.5 Command executed or discarded . 41
9.2 Collision avoidance, collision detection and collision recovery . 42
– 4 – IEC 62386-101:2022 © IEC 2022
9.2.1 General . 42
9.2.2 Collision avoidance . 42
9.2.3 Collision detection . 42
9.2.4 Collision recovery . 44
9.3 Transactions . 45
9.4 Send-twice forward frames and send-twice commands . 45
9.5 Command iteration . 46
9.6 Usage of a shared interface . 46
9.6.1 General . 46
9.6.2 Backward frames . 47
9.6.3 Forward frames . 47
9.7 Use of multiple bus power supplies . 47
10 Declaration of variables . 47
11 Definition of commands . 47
Annex A (informative) Background information for systems . 48
A.1 Wiring information . 48
A.2 System architectures . 49
A.2.1 General . 49
A.2.2 Single-master architecture . 49
A.2.3 Multi-master architecture with one application controller . 50
A.2.4 Multi-master architecture with more than one application controller . 51
A.2.5 Multi-master architecture with integrated input device . 52
A.2.6 Multi-master architecture with integrated input device and power supply. 53
A.3 Collision detection . 54
A.4 Timing definition explanations . 55
A.4.1 General . 55
A.4.2 Receiver timing . 55
A.4.3 Transmitter timing . 55
A.4.4 Grey areas . 56
A.5 Maximum current consumption calculation explanation . 56
A.5.1 Single bus power supply . 56
A.5.2 Multiple bus power supplies . 57
A.5.3 Redundant bus power supplies . 58
A.6 Communication layer overview . 59
A.6.1 General . 59
A.6.2 Physical layer . 60
A.6.3 Data link layer . 60
A.6.4 Network layer . 60
A.6.5 Transport layer . 60
A.6.6 Session layer . 60
A.6.7 Presentation layer . 60
A.6.8 Application layer . 60
A.7 Effects of combining version number 1 and version number 2.y devices . 60
Annex B (informative) Touch current . 62
Bibliography . 63
Figure 1 – IEC 62386 graphical overview . 9
Figure 2 – System structure example . 17
Figure 3 – Communication between bus units (example) . 17
Figure 4 – Example of a shared interface . 20
Figure 5 – Start-up timing example . 25
Figure 6 – Maximum signal rise and fall time measurements . 28
Figure 7 – Minimum signal rise and fall time measurements . 29
Figure 8 – Bus power supply current behaviour . 31
Figure 9 – Bus power supply voltage behaviour . 32
Figure 10 – Frame example . 33
Figure 11 – Bi-phase encoded bits . 33
Figure 12 – Bit timing example . 35
Figure 13 – Settling time illustration . 35
Figure 14 – Receiver timing decision example . 37
Figure 15 – Dealing with frames and commands . 41
Figure 16 – Collision detection timing decision example . 44
Figure 17 – Collision recovery example . 45
Figure A.1 – Single-master architecture example . 50
Figure A.2 – Multi-master architecture example with one application controller . 51
Figure A.3 – Multi-master architecture example with two application controllers . 52
Figure A.4 – Multi-master architecture example with integrated input device . 53
Figure A.5 – Multi-master architecture example with integrated input device and bus
power supply . 54
Figure A.6 – Collision detection timing diagram. 55
Figure A.7 – Transmitter and receiver timing illustration . 56
Figure A.8 – Bus power supply current values. 57
Figure A.9 – Current demand coverage . 57
Figure A.10 – Combination of four bus power supplies . 58
Figure A.11 – Redundant bus power supplies . 58
Figure B.1 – Touch current from a bus unit . 62
Figure B.2 – Summation of touch currents from several bus units . 62
Table 1 – System components . 16
Table 2 – Transmitters and receivers in bus units . 18
Table 3 – Power-interruption timing of external power . 23
Table 4 – Power-interruption timing of bus power . 23
Table 5 – Short power interruptions . 24
Table 6 – Start-up timing. 25
Table 7 – System voltage levels . 26
Table 8 – Receiver voltage levels . 27
Table 9 – Transmitter voltage levels . 27
Table 10 – Current rating . 27
Table 11 – Signal rise and fall times . 28
Table 12 – Bus power supply output voltage . 30
Table 13 – Bus power supply current rating . 30
– 6 – IEC 62386-101:2022 © IEC 2022
Table 14 – Bus power supply dynamic behaviour . 31
Table 15 – Short circuit timing behaviour . 32
Table 16 – Transmitter bit timing . 35
Table 17 – Transmitter settling time values . 36
Table 18 – Receiver timing starting at the beginning of a logical bit . 37
Table 19 – Receiver timing starting at an edge inside of a logical bit . 37
Table 20 – Receiver settling time values . 38
Table 21 – Multi-master transmitter bit timing. 39
Table 22 – Multi-master transmitter settling time values . 40
Table 23 – Checking a logical bit, starting at an edge at the beginning of the bit . 43
Table 24 – Checking a logical bit, starting at an edge inside the bit . 43
Table 25 – Collision recovery timing . 44
Table 26 – Transmitter command iteration timing . 46
Table 27 – Receiver command iteration timing . 46
Table A.1 – Maximum cable length . 49
Table A.2 – OSI layer model of the IEC 62386 series . 59
Table A.3 – Effects of combining version number 1 and version number 2.y devices . 61
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL ADDRESSABLE LIGHTING INTERFACE –
Part 101: General requirements –
System components
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
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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 62386-101 has been prepared by IEC technical committee 34: Lighting. It is an
International Standard.
This third edition cancels and replaces the second edition published in 2014 and
Amendment 1:2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the scope has been updated;
b) safety and earthing have been updated and extended;
c) references have been updated;
d) the use of bus-power and external-power has been clarified;
e) polarity sensitivity for bus units including a bus power supply has been updated;
– 8 – IEC 62386-101:2022 © IEC 2022
f) frame sizes of 32 bits are no longer reserved.
The text of this International Standard is based on the following documents:
Draft Report on voting
34/947/FDIS 34/988/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 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/standardsdev/publications.
This Part 101 of IEC 62386 is intended to be used in conjunction with:
• Part 102, which contains general requirements for the relevant product type (control gear),
and with the appropriate Part 2xx (particular requirements for control gear);
• Part 103, which contains general requirements for the relevant product type (control
devices), and the appropriate Part 3xx (particular requirements for control devices);
• Part 104, which contains general requirements for wireless and alternative wired system
components;
• Part 105, which contains particular requirements for firmware transfer for control gear and
control devices.
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
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.
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. Parts 104 and 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 third edition of IEC 62386-101 is intended to be used in conjunction with IEC 62386-102
and with the various parts that make up the IEC 62386-2xx series for control gear, together
with IEC 62386-103 and the various parts that make up the IEC 62386-3xx series of particular
requirements for control devices. The division 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".
– 10 – IEC 62386-101:2022 © IEC 2022
DIGITAL ADDRESSABLE LIGHTING INTERFACE –
Part 101: General requirements –
System components
1 Scope
This part of IEC 62386 is applicable to system components in a bus system for control by
digital signals of electronic lighting equipment.
The control methods, algorithms and data exchange methods of application controllers used
for lighting control are not within the scope of the IEC 62386 series. EMC requirements are
not within the scope of the IEC 62386 series.
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 61347-1:2015, Lamp controlgear – Part 1: General and safety requirements
IEC 61347-1:2015/AMD1:2017
IEC 62386-102:2022, Digital addressable lighting interface – Part 102: General requirements
– Control gear
IEC 62386-103:2022, Digital addressable lighting interface – Part 103: General requirements
– Control devices
IEC 62386-104, Digital addressable lighting interface – Part 104: General requirements –
Wireless and alternative wired system components
IEC 62386-105, Digital addressable lighting interface – Part 105: Particular requirements for
control gear and control devices – Firmware Transfer
IEC 62386-2xx (all parts), Digital addressable lighting interface – Part 2xx: Particular
requirements for control gear
IEC 62386-3xx (all parts), Digital addressable lighting interface – Part 3xx: Particular
requirements for control devices
IEC 61000-4-11, Electromagnetic compatibility (EMC) – Part 4-11:Testing and measurement
techniques – Voltage dips, short interruptions and voltage variations immunity tests for
equipment with input current up to 16 A per phase
IEC 60664-1, Insulation coordination for equipment within low-voltage supply systems –
Part 1: Principles, requirements and tests
IEC 60990:2016, Methods of measurement of touch current and protective conductor current
IEC 61643-11, Low-voltage surge protective devices – Part 11: Surge protective devices
connected to low-voltage power systems – Requirements and test methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
active state
phase of low level voltage during a transmission
Note 1 to entry: Noise and short pulses may be ignored and therefore do not change the state.
3.2
advanced bus power supply
bus power supply capable of checking the bus for fault conditions before switching on its
output continuously
Note 1 to entry: Examples of fault conditions are mains voltage connected to the bus or short circuit of the bus.
3.3
application controller
control device that is connected to the bus and sends commands in order to control input
devices and/or control gear connected to the same bus
3.4
backward frame
frame used for backward transmission
3.5
backward transmission
transmission of data as a reply to and triggered by a forward transmission
3.6
bus
two-wire connection line carrying power and frames
3.7
bus powered
drawing the power for operation from the bus
3.8
bus power down
bus power interruption longer than 45 ms
3.9
bus power interruption
abnormal condition where the bus voltage is in the receiver low level voltage range, but not
because of a transmitter being active
– 12 – IEC 62386-101:2022 © IEC 2022
3.10
bus power supply
unit feeding defined energy to the bus
3.11
bus unit
logical unit or combination of logical units, containing one transmitter and optionally one
receiver
Note 1 to entry: See 4.6.6.
3.12
charge overshoot
product of current overshoot time and current overshoot amplitude
3.13
collision
situation in which two or more transmitters are transmitting simultaneously
Note 1 to entry: Collisions can go unnoticed if the transmission timing is sufficiently similar and the transmitted
frame content is identical.
3.14
command
forward transmission with appropriate information content, intended to cause a reaction in the
receiver
Note 1 to entry: A receiver, having decoded a command can, when appropriate, decide to ignore the command.
Note 2 to entry: Refer to IEC 62386-102, IEC 62386-103, IEC 62386-104, IEC 62386-105, the IEC 62386-2xx
series and IEC 62386-3xx series for command definitions.
3.15
control device
device that is connected to the bus and sends commands to other devices connected to the
same bus
Note 1 to entry: Control devices can also receive commands and backward transmissions. Control devices can
contain application controllers and/or input devices.
3.16
control gear
device that is connected to the bus and receives commands in order to control at least one
output in a direct or indirect way
Note 1 to entry: The lamp controlgear described in IEC 61347-1 can cover control gear.
3.17
current overshoot time
time per bit during which the current supplied by the bus power supply is above the allowed
maximum of 250 mA after a transition from idle state to active state
Note 1 to entry: See 6.5.4.
3.18
destroy area
time slot where a valid frame cannot be ensured
3.19
edge
change from active state to idle state or vice versa
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Frequently Asked Questions
IEC 62386-101:2022 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Digital addressable lighting interface - Part 101: General requirements - System components". This standard covers: IEC 62386-101:2022 is applicable to system components in a bus system for control by digital signals of electronic lighting equipment. The control methods, algorithms and data exchange methods of application controllers used for lighting control are not within the scope of the IEC 62386 series. EMC requirements are not within the scope of the IEC 62386 series. This third edition cancels and replaces the second edition published in 2014 and Amendment 1:2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: the scope has been updated; safety and earthing have been updated and extended; references have been updated; the use of bus-power and external-power has been clarified; polarity sensitivity for bus units including a bus power supply has been updated; frame sizes of 32 bits are no longer reserved.
IEC 62386-101:2022 is applicable to system components in a bus system for control by digital signals of electronic lighting equipment. The control methods, algorithms and data exchange methods of application controllers used for lighting control are not within the scope of the IEC 62386 series. EMC requirements are not within the scope of the IEC 62386 series. This third edition cancels and replaces the second edition published in 2014 and Amendment 1:2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: the scope has been updated; safety and earthing have been updated and extended; references have been updated; the use of bus-power and external-power has been clarified; polarity sensitivity for bus units including a bus power supply has been updated; frame sizes of 32 bits are no longer reserved.
IEC 62386-101:2022 is classified under the following ICS (International Classification for Standards) categories: 29.140.50 - Lighting installation systems; 29.140.99 - Other standards related to lamps. The ICS classification helps identify the subject area and facilitates finding related standards.
IEC 62386-101:2022 has the following relationships with other standards: It is inter standard links to IEC 62386-101:2014, IEC 62386-101:2014/AMD1:2018. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
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