Digital addressable lighting interface - Part 221: Particular requirements for control gear - Demand response (device type 20)

IEC 62386-221:2018 specifies the methodology of demand response which focuses on the curtailment of electric loads during peak demand times thus avoiding the requirement to find new sources of generation capacity. By using load shedding, the lighting system responds to the demands of the energy supply.
This document is applicable to control gear supporting the demand response functionality.

Interface d’éclairage adressable numérique - Partie 221: Exigences particulières pour les appareillages de commande - Réaction à la demande (dispositifs de type 20)

L’IEC 62386-221:2018 spécifie la méthodologie de la réaction à la demande qui cible la réduction de la consommation des charges électriques au cours des périodes de pointe de la demande, ce qui évite l’exigence de nouvelles sources de capacité de production. À l’aide du délestage, le système d’éclairage répond aux demandes de l’alimentation en énergie.
Le présent document s’applique aux appareillages de commande prenant en charge la fonctionnalité de réaction à la demande.

General Information

Status
Published
Publication Date
17-Jun-2018
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
18-Jun-2018
Ref Project

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IEC 62386-221
Edition 1.0 2018-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Digital addressable lighting interface –
Part 221: Particular requirements for control gear – Demand response
(device type 20)
Interface d’éclairage adressable numérique –
Partie 221: Exigences particulières pour les appareillages de commande –
Réaction à la demande (dispositifs de type 20)
IEC 62386-221:2018-06(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62386-221
Edition 1.0 2018-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Digital addressable lighting interface –
Part 221: Particular requirements for control gear – Demand response
(device type 20)
Interface d’éclairage adressable numérique –
Partie 221: Exigences particulières pour les appareillages de commande –
Réaction à la demande (dispositifs de type 20)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.50; 29.140.99 ISBN 978-2-8322-5792-0

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62386-221:2018 © IEC 2018
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 6

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms and definitions ...................................................................................................... 8

4 General ........................................................................................................................... 9

4.1 General ................................................................................................................... 9

4.2 Version number ...................................................................................................... 9

5 Electrical specification ..................................................................................................... 9

6 Interface power supply .................................................................................................... 9

7 Transmission protocol structure ....................................................................................... 9

8 Timing ............................................................................................................................. 9

9 Method of operation ......................................................................................................... 9

9.1 General ................................................................................................................... 9

9.2 Load shedding ........................................................................................................ 9

9.3 Load shedding conditions ..................................................................................... 10

9.4 Reduction factors .................................................................................................. 10

9.4.1 General ......................................................................................................... 10

9.4.2 Use of reduction factors ................................................................................. 10

9.5 Load shedding and fading ..................................................................................... 11

9.5.1 Fading on load shedding activation ................................................................ 11

9.5.2 Fade according to IEC 62386-102 during load shedding operation ................. 11

9.5.3 Load shedding fade and fade according to IEC 62386-102 in parallel ............ 11

9.6 Load shedding and emergency operation .............................................................. 12

10 Declaration of variables ................................................................................................. 12

11 Definition of commands ................................................................................................. 12

11.1 General ................................................................................................................. 12

11.2 Overview sheets ................................................................................................... 12

11.3 Application extended commands ........................................................................... 13

11.3.1 General ......................................................................................................... 13

11.3.2 QUERY EXTENDED VERSION NUMBER ...................................................... 13

11.3.3 SET LOAD SHEDDING CONDITION (DTR0) ................................................. 13

11.3.4 SET REDUCTION FACTOR 1 (DTR0) ............................................................ 13

11.3.5 SET REDUCTION FACTOR 2 (DTR0) ............................................................ 14

11.3.6 SET REDUCTION FACTOR 3 (DTR0) ............................................................ 14

11.3.7 QUERY LOAD SHEDDING CONDITION ........................................................ 14

11.3.8 QUERY REDUCTION FACTOR 1 .................................................................. 14

11.3.9 QUERY REDUCTION FACTOR 2 .................................................................. 14

11.3.10 QUERY REDUCTION FACTOR 3 .................................................................. 14

11.3.11 QUERY ACTUAL FACTOR ............................................................................ 14

11.3.12 QUERY LOAD SHEDDING FADE RUNNING ................................................. 15

11.3.13 ENABLE DEVICE TYPE (data) ....................................................................... 15

Figure 1 – IEC 62386 graphical overview ................................................................................ 6

---------------------- Page: 4 ----------------------
IEC 62386-221:2018 © IEC 2018 – 3 –

Table 1 – Load shedding conditions and reduction factors .................................................... 10

Table 2 – Declaration of additional variables ......................................................................... 12

Table 3 – Application extended commands for this device type (20) ...................................... 13

---------------------- Page: 5 ----------------------
– 4 – IEC 62386-221:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL ADDRESSABLE LIGHTING INTERFACE –
Part 221: Particular requirements for control gear –
Demand response (device type 20)
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, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC

Publication(s)”). Their 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

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

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6) All users should ensure that they have the latest edition of this publication.

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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.

International Standard IEC 62386-221 has been prepared by IEC technical committee 34:

Lamps and related equipment.
The text of this International Standard is based on the following documents:
CDV Report on voting
34/409/CDV 34/488A/RVC

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

This Part 221 of IEC 62386 is intended to be used in conjunction with:
---------------------- Page: 6 ----------------------
IEC 62386-221:2018 © IEC 2018 – 5 –
• Part 101, which contains general requirements for system components;
• Part 102, which contains general requirements for control gear.

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 "http://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 publication 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.
---------------------- Page: 7 ----------------------
– 6 – IEC 62386-221:2018 © IEC 2018
INTRODUCTION

IEC 62386 contains several parts, referred to as series. The 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.

The 2xx parts extend 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 3xx parts extend 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 62386-221 is intended to be used in conjunction with
IEC 62386-101:2014, IEC 62386-101:2014/AMD1:2018, IEC 62386-102:2014 and

IEC 62386-102:2014/AMD1:—. 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.
2xx 2xx 2xx 2xx 2xx 3xx 3xx 3xx 3xx 3xx
102 General requirements - 103 General requirements -
Control gear Control devices
104 General requirements -
Wireless system components
101 General requirements -
System components
IEC
Figure 1 – IEC 62386 graphical overview

This document, and the other parts that make up the IEC 62386-2xx series, in referring to any

of the clauses of IEC 62386-1XX or IEC 62386-2XX, specifies the extent to which such a

clause is applicable and the order in which the tests are to be performed. The parts also

include additional requirements, as necessary.

Where the requirements of any of the clauses of IEC 62386-101 or IEC 62386-102 are

referred to in this document by the sentence "The requirements of IEC 62386-1XX, Clause “n”

apply”, this sentence is to be interpreted as meaning that all requirements of the clause in

question of Part 101 or Part 102 apply, except any which are inapplicable to the specific type

of lamp control gear covered by Part 221.
---------------------- Page: 8 ----------------------
IEC 62386-221:2018 © IEC 2018 – 7 –

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".
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”
---------------------- Page: 9 ----------------------
– 8 – IEC 62386-221:2018 © IEC 2018
DIGITAL ADDRESSABLE LIGHTING INTERFACE –
Part 221: Particular requirements for control gear –
Demand response (device type 20)
1 Scope

This part of IEC 62386 specifies the methodology of demand response which focuses on the

curtailment of electric loads during peak demand times thus avoiding the requirement to find

new sources of generation capacity. By using load shedding, the lighting system responds to

the demands of the energy supply.

This document is applicable to control gear supporting the demand response functionality.

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 62386-101:2014, Digital addressable lighting interface – Part 101: General requirements

– System components
IEC 62386-101:2014/AMD1:2018

IEC 62386-102:2014, Digital addressable lighting interface – Part 102: General requirements

– Control gear
IEC 62386-102:2014/AMD1:—
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 terminological 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
load shedding

temporary reduction of light output with the intention of reducing mains power consumption

3.2
normal light output

expected light output representing the variable “actualLevel” as determined by the currently

selected dimming curve
___________

Under preparation. Stage at the time of publication: IEC CFDIS 62386-102/AMD1:2018.

---------------------- Page: 10 ----------------------
IEC 62386-221:2018 © IEC 2018 – 9 –
3.3
load shedding light output

resultant light output determined by the normal light output after the application of the load

shedding reduction factor
4 General
4.1 General

The requirements of IEC 62386-102:2014 and IEC 62386-102:2014/AMD1:—, Clause 4 apply,

with the restrictions, changes and additions identified below.
4.2 Version number

In 4.2 of IEC 62386-102:2014 and IEC 62386-102:2014/AMD1:—, “102” shall be replaced by

“221”, “version number” shall be replaced by “extended version number” and the current

version number shall be replaced by "2.0".
5 Electrical specification

The requirements of IEC 62386-102:2014 and IEC 62386-102:2014/AMD1:—, Clause 5 apply.

6 Interface power supply

The requirements of IEC 62386-102:2014 and IEC 62386-102:2014/AMD1:—, Clause 6 apply.

7 Transmission protocol structure

The requirements of IEC 62386-102:2014 and IEC 62386-102:2014/AMD1:—, Clause 7 apply.

8 Timing

The requirements of IEC 62386-102:2014 and IEC 62386-102:2014/AMD1:—, Clause 8 apply.

9 Method of operation
9.1 General

The requirements of IEC 62386-102:2014 and IEC 62386-102:2014/AMD1:—, Clause 9 apply

with the following restrictions, changes and additions.
9.2 Load shedding

The application of the load shedding functionality is intended to achieve a rapid reduction in

the current lighting system electrical power load of a building, in response to an abnormal

condition in the mains electrical generation and distribution system.

As load shedding functionality is only a temporary state of the lighting system, its application

shall be without any impact on IEC 62386-102 control gear variables and functionalities,

unless explicitly stated otherwise. Enabling load shedding shall only affect the generated light

output of the control gear, whereas other photometric properties shall remain unchanged.

---------------------- Page: 11 ----------------------
– 10 – IEC 62386-221:2018 © IEC 2018

The application controller might separately need to adjust the daylight set point during

daylight harvesting operations to prevent an inadvertent increase in light level and energy

consumed when a change to a load shedding condition has occurred.

NOTE 1 Examples of IEC 62386-102 control gear variables are “actualLevel”, and “targetLevel”.

NOTE 2 Examples of photometric properties are luminous colour, colour rendering index Ra.

9.3 Load shedding conditions

A control gear which conforms to this document shall support four load shedding conditions

with associated reduction factors as shown in Table 1.
Table 1 – Load shedding conditions and reduction factors
“loadSheddingCondition” Load shedding reduction factors
0 “actualFactor” = 0 (no reduction)
1 “actualFactor” = “reductionFactor1”
2 “actualFactor” = “reductionFactor2”
3 “actualFactor” = “reductionFactor3”

An application controller may select the load shedding condition by means of the instruction

“SET LOAD SHEDDING CONDITION (DTR0)”. The current load shedding condition can be
queried by means of the query “QUERY LOAD SHEDDING CONDITION”.
9.4 Reduction factors
9.4.1 General

The reduction factors can be set by means of instructions “SET REDUCTION FACTOR 1

(DTR0)”, “SET REDUCTION FACTOR 2 (DTR0)”, and “SET REDUCTION FACTOR 3 (DTR0)”.

The reduction factor of “loadSheddingCondtion”: 0 is fixed to zero and cannot be changed.

The reduction factors can be queried by means of queries QUERY REDUCTION FACTOR 1,

QUERY REDUCTION FACTOR 2 and QUERY REDUCTION FACTOR 3.
“SET LOAD SHEDDING CONDITION (DTR0)” shall cause “actualFactor” to be set to the
corresponding load shedding reduction factor from Table 1.

To determine either the currently set reduction factor of a single gear or if there is currently

any load shedding functionality enabled, QUERY ACTUAL FACTOR can be used.
9.4.2 Use of reduction factors

The control gear shall operate the lamp(s) with a reduced arc power calculated according to

the following formula:
""actualFactor
load shedding light output=1−× normal light output
100

If the “actualFactor” is less than 100 and will result in a reduction of the arc power below the

“minLevel”, the control gear shall operate the lamp at a reduced arc power that corresponds

to the “PHM” of the control gear.
---------------------- Page: 12 ----------------------
IEC 62386-221:2018 © IEC 2018 – 11 –

An “actualFactor” of 100 shall cause the control gear to turn the lamp(s) off after fading to the

light output that corresponds to the ”PHM”.
9.5 Load shedding and fading
9.5.1 Fading on load shedding activation

If the control gear is not capable of fading (i.e. non-dimmable control gear), then the control

gear will turn off the lamps immediately after “actualFactor” is set to 100 % and will set the

load shedding light output to match the normal light output immediately if “actualFactor” is set

to less than 100 %.

If the control gear is capable of fading then whenever “actualFactor” is set to a new value, the

transition from normal light output to load shedding light output shall be made using a linear

fade with a nominal duration of eight seconds with a tolerance of ±10 %. During the transition

“loadSheddingFadeRunning” shall be set to TRUE. “loadSheddingFadeRunning” can be queried by

means of the query “QUERY LOAD SHEDDING FADE RUNNING.

During a load shedding fade, the step from light output equalling "PHM" to lamp off, shall not

contribute to the load shedding fade time. The step from light output equalling “PHM” to lamp

off, shall be taken immediately after the load shedding fade time has elapsed. If a lamp is off

at the beginning of the load shedding fade and dimmed to a certain load shedding light output,

the step from lamp off to light output equalling “PHM” shall not contribute to the load

shedding fade time. This means that the load shedding fade time starts when the lamp is on.

In the case where the normal light output equals zero when “actualFactor” is changed, no

load shedding fade time shall be applied and the new “actualFactor” shall be applied

immediately.
9.5.2 Fade according to IEC 62386-102 during load shedding operation

As long as a load shedding condition with “actualFactor” > 0 is active, fading shall be carried

out as described in IEC 62386-102:2014 and IEC 62386-102:2014/AMD1:—, 9.5 with the

exception that normal light output shall be replaced by the nearest possible load shedding

light output throughout the whole fade.
9.5.3 Load shedding fade and fade according to IEC 62386-102 in parallel
In the case where

• a load shedding condition is set during a running fade indicated by the “fadeRunning”

variable being TRUE, or

• a fade according to IEC 62386-102:2014 and IEC 62386-102:2014/AMD1:—, 9.5 is initiated

during a running load shedding fade indicated by “loadSheddingFadeRunning” being TRUE,

the following behaviour applies.

The two fades shall be processed in parallel, resulting in a linear transition at the end of which

“targetLevel” is reached and the load shedding light output according to the applied

“actualFactor” is emitted. The corresponding individual light outputs at specific points in time

during those two running fades shall be determined in the following way.

The normal light output at the examined point in time shall be calculated according to the fade

time calculation described in IEC 6
...

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