Digital addressable lighting interface - Part 205: Supply voltage controller for incandescent lamps (device type 4) (IEC 62386-205:2009)

This International Standard specifies a protocol and test procedures for the control by digital signals of electronic control gear associated with incandescent lamps.

Digital adressierbare Schnittstelle für die Beleuchtung - Teil 205: Besondere Anforderungen an Betriebsgeräte - Versorgungsspannungsregler für Glühlampen (Gerätetyp 4) (IEC 62386-205:2009)

Interface d'éclairage adressable numérique - Partie 205: Exigences particulières pour les appareillages de commande - Variateur de tension d'alimentation pour les lampes à incandescence (dispositifs de type 4) (CEI 62386-205:2009)

La CEI 62386-205:2009 spécifie un protocole et des procédures d'essai applicables aux appareillages électroniques commandés par des signaux numériques associés à des lampes à incandescence. Cette partie 205 est destinée à être utilisée conjointement avec la CEI 62386-101 et la CEI 62386-102, qui contiennent les exigences générales relatives au type de produit concerné (appareillage ou dispositifs de commande).

Digitalni naslovljivi vmesnik za razsvetljavo - 205. del: Krmilnik napajalne napetosti za žarnice (naprava tipa 4) (IEC 62386-205:2009)

Ta mednarodni standard opredeljuje protokol in preskusne postopke za krmiljenje s pomočjo digitalnih signalov elektronskega krmilja, povezanega z žarnicami.

General Information

Status
Published
Publication Date
14-Dec-2009
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
12-Nov-2009
Due Date
17-Jan-2010
Completion Date
15-Dec-2009

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SLOVENSKI STANDARD
SIST EN 62386-205:2010
01-januar-2010
Digitalni naslovljivi vmesnik za razsvetljavo - 205. del: Krmilnik napajalne
napetosti za žarnice (naprava tipa 4) (IEC 62386-205:2009)
Digital addressable lighting interface - Part 205: Supply voltage controller for
incandescent lamps (device type 4) (IEC 62386-205:2009)
Digital adressierbare Schnittstelle für die Beleuchtung - Teil 205: Besondere
Anforderungen an Betriebsgeräte - Versorgungsspannungsregler für Glühlampen
(Gerätetyp 4) (IEC 62386-205:2009)
Interface d'éclairage adressable numérique - Partie 205: Exigences particulières pour les
appareillages de commande - Variateur de tension d'alimentation pour les lampes à
incandescence (dispositifs de type 4) (CEI 62386-205:2009)
Ta slovenski standard je istoveten z: EN 62386-205:2009
ICS:
29.140.20 Žarnice z žarilno nitko Incandescent lamps
29.140.50 Instalacijski sistemi za Lighting installation systems
razsvetljavo
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
SIST EN 62386-205:2010 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62386-205:2010

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SIST EN 62386-205:2010

EUROPEAN STANDARD
EN 62386-205

NORME EUROPÉENNE
November 2009
EUROPÄISCHE NORM

ICS 29.140.50; 29.140.99


English version


Digital addressable lighting interface -
Part 205: Particular requirements for control gear -
Supply voltage controller for incandescent lamps (device type 4)
(IEC 62386-205:2009)


Interface d'éclairage  Digital adressierbare Schnittstelle
adressable numérique - für die Beleuchtung -
Partie 205: Exigences particulières Teil 205: Besondere Anforderungen
pour les appareillages de commande - an Betriebsgeräte -
Variateur de tension d'alimentation Versorgungsspannungsregler
pour les lampes à incandescence für Glühlampen (Gerätetyp 4)
(dispositifs de type 4) (IEC 62386-205:2009)
(CEI 62386-205:2009)




This European Standard was approved by CENELEC on 2009-09-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: Avenue Marnix 17, B - 1000 Brussels


© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62386-205:2009 E

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SIST EN 62386-205:2010
EN 62386-205:2009 - 2 -
Foreword
The text of document 34C/819/CDV, future edition 1 of IEC 62386-205, prepared by SC 34C, Auxiliaries
for lamps, of IEC TC 34, Lamps and related equipment, was submitted to the IEC-CENELEC parallel vote
and was approved by CENELEC as EN 62386-205 on 2009-09-01.
This standard is to be used in conjunction with EN 62386-101 and EN 62386-102, which contain general
requirements for the relevant product type (control gear or control devices).
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2010-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2012-09-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62386-205:2009 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60598-1 NOTE  Harmonized as EN 60598-1:2008 (modified).
IEC 60669-2-1 NOTE  Harmonized as EN 60669-2-1:2004 (modified).
IEC 60921 NOTE  Harmonized as EN 60921:2004 (not modified).
IEC 60923 NOTE  Harmonized as EN 60923:2005 (not modified).
IEC 60925 NOTE  Harmonized as EN 60925:1991 (not modified).
IEC 60929 NOTE  Harmonized as EN 60929:2006 (not modified).
IEC 61347-1 NOTE  Harmonized as EN 61347-1:2008 (modified).
IEC 61347-2-3 NOTE  Harmonized as EN 61347-2-3:2001 (not modified).
IEC 61547 NOTE  Harmonized as EN 61547:1995 (not modified).
CISPR 15 NOTE  Harmonized as EN 55015:2006 (not modified).
__________

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SIST EN 62386-205:2010
- 3 - EN 62386-205:2009
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

Publication Year Title EN/HD Year

IEC 62386-101 2009 Digital addressable lighting interface - EN 62386-101 2009
Part 101: General requirements - System


IEC 62386-102 2009 Digital addressable lighting interface - EN 62386-102 2009
Part 102: General requirements - Control gear

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SIST EN 62386-205:2010

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SIST EN 62386-205:2010
IEC 62386-205
®
Edition 1.0 2009-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Digital addressable lighting interface –
Part 205: Particular requirements for control gear – Supply voltage controller for
incandescent lamps (device type 4)

Interface d’éclairage adressable numérique –
Partie 205: Exigences particulières pour les appareillages de commande –
Variateur de tension d’alimentation pour les lampes à incandescence (dispositifs
de type 4)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
U
CODE PRIX
ICS 29.140.50; 29.140.99 ISBN 2-8318-1005-9
® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale

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SIST EN 62386-205:2010
– 2 – 62386-205 © IEC:2009
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references .6
3 Terms and definitions .6
4 General description .7
5 Electrical specifications .7
6 Interface power supply .7
7 Transmission protocol structure.7
8 Timing .7
9 Method of operation .7
10 Declaration of variables .8
11 Definition of commands .9
12 Test procedures .16
Bibliography.27

Figure 1 – Application extended configuration command sequence example.10
Figure 2 – Test sequence ‘QUERY DIMMER STATUS’ and 'QUERY FEATURES' .17
Figure 3 – Test sequence ‘QUERY FAILURE STATUS’.18
Figure 4 – Test sequence ‘COMMANDS 242 to 248’ .20
Figure 5 – Test sequence ‘SELECT DIMMING CURVE’, ‘QUERY DIMMING CURVE’
and ‘QUERY DIMMER STATUS’ .21
Figure 6 – Test sequence ‘REFERENCE SYSTEM POWER’ .22
Figure 7 – Test sequence ‘REFERENCE SYSTEM POWER’ .23
Figure 8 – Test sequence ‘QUERY REFERENCE MEASUREMENT FAILED’ .24
Figure 9 – Test sequence ‘QUERY EXTENDED VERSION NUMBER’ .25
Figure 10 – Test sequence ‘RESERVED APPLICATION EXTENDED COMMANDS’ .26

Table 1 – Declaration of variables.8
Table 2 – Dimming method bits.12
Table 3 – Summary of the application extended command set .15
Table 4 – Command 241 ‘QUERY FAILURE STATUS’ test conditions.19
Table 5 – Query commands 242 to 248 test table .20

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SIST EN 62386-205:2010
62386-205 © IEC:2009 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

DIGITAL ADDRESSABLE LIGHTING INTERFACE –

Part 205: Particular requirements for control gear –
Supply voltage controller for incandescent lamps
(device type 4)


FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
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
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
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 62386-205 has been prepared by subcommittee 34C: Auxiliaries
for lamps, of IEC technical committee 34: Lamps and related equipment.
The text of this standard is based on the following documents:
CDV Report on voting
34C/819/CDV 34C/840/RVC

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

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SIST EN 62386-205:2010
– 4 – 62386-205 © IEC:2009
This Part 205 is intended to be used in conjunction with IEC 62386-101 and IEC 62386-102,
which contain general requirements for the relevant product type (control gear or control
devices).
A list of all parts of the IEC 62386 series, under the general title: Digital addressable lighting
interface, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC website under http://webstore.iec.ch in the
data related to the specific publication. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.

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SIST EN 62386-205:2010
62386-205 © IEC:2009 – 5 –
INTRODUCTION
This first edition of IEC 62386-205 is published 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.
This International Standard, and the other parts that make up the IEC 62386-200 series, in
referring to any of the clauses of IEC 62386-101 or IEC 62386-102, specify 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. All parts that make up the
IEC 62386-200 series are self-contained and therefore do not include references to each
other.
Where the requirements of any of the clauses of IEC 62386-101 or IEC 62386-102 are
referred to in this International Standard 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 205.
All numbers used in this International Standard 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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DIGITAL ADDRESSABLE LIGHTING INTERFACE –

Part 205: Particular requirements for control gear –
Supply voltage controller for incandescent lamps
(device type 4)



1 Scope
This International Standard specifies a protocol and test procedures for the control by digital
signals of electronic control gear associated with incandescent lamps.
2 Normative references
The following referenced documents are indispensable for the application 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 62386-101:2009, Digital addressable lighting interface – Part 101: General requirements
– System
IEC 62386-102:2009, Digital addressable lighting interface – Part 102: General requirements –
Control gear
3 Terms and definitions
For the purposes of this document, the terms and definitions given in Clause 3 of
IEC 62386-101:2009 and Clause 3 of IEC 62386-102:2009 apply, together with the following.
3.1
reference measurement
measurement of the actual lamp load
NOTE Control gear determines the actual lamp load with internal procedures and measurements, not specified by
this standard.
3.2
detection of load decrease
recognition that the actual lamp load is significantly below the load measured during a
successful ‘reference measurement’
NOTE The criteria for regarding a load increase or decrease as significant can only be defined by the
manufacturer, and these criteria should be described in the manual.
3.3
detection of load increase
recognition that the actual lamp load is significantly above the load measured during a
successful ‘reference measurement’
NOTE The criteria for regarding a load increase or decrease as significant can only be defined by the
manufacturer, and these criteria should be described in the manual.
3.4
thermal overload
the maximum permissible gear temperature is exceeded

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SIST EN 62386-205:2010
62386-205 © IEC:2009 – 7 –
3.5
thermal shut down
gear switches off the lamp because automatic reduction of output level failed to prevent a
persistent thermal overload
3.6
light level reduction due to thermal overload
light level reduction with the objective of decreasing gear temperature.
3.7
load over-current shutdown
gear switches off the lamp because automatic reduction of output level failed to prevent a
persistent over-current condition.
4 General description
The requirements of Clause 4 of IEC 62386-101:2009 and Clause 4 of IEC 62386-102:2009
shall apply.
5 Electrical specifications
The requirements of Clause 5 of IEC 62386-101:2009 and Clause 5 of IEC 62386-102:2009
shall apply.
6 Interface power supply
The requirements of Clause 6 of IEC 62386-101:2009 and Clause 6 of IEC 62386-102:2009
shall apply if a power supply is integrated with the control gear.
7 Transmission protocol structure
The requirements of Clause 7 of IEC 62386-101:2009 and Clause 7 of IEC 62386-102:2009
shall apply.
8 Timing
The requirements of Clause 8 of IEC 62386-101:2009 and Clause 8 of IEC 62386-102:2009
shall apply.
9 Method of operation
9.1 General
The requirements of Clause 9 of IEC 62386-101:2009 and Clause 9 of IEC 62386-102:2009
shall apply with the following additions and adaptations:
The dimming curve, whether logarithmic or linear, shall apply for a lamp type and rating
suitable for the use by the control gear.
The dimming mode in the case of a fixed-mode universal dimmer shall only be changeable by
the means of a switch or other physical controls on the dimmer, and not from the interface.
NOTE This eliminates the danger of unintentional changes during system programming.

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SIST EN 62386-205:2010
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9.2 Detection of load decrease
If the actual lamp load is significantly below the load measured during a successful ‘reference
measurement’, the control gear might switch off the lamp if this is necessary for its safe
operation and the flag bit ‘load decrease’ shall be set.
9.3 Detection of load increase
If the actual lamp load is significantly above the load measured during a successful ‘reference
measurement’, the control gear might switch off if this is necessary for its safe operation and
the flag bit ‘load increase’ shall be set.
9.4 Lamp replacement on control gear with load increase/decrease feature
If a lamp is replaced with one of a different power, the control gear may falsely detect load
decrease or load increase. In this case, correct detection of load decrease or load increase
shall require a successful ‘REFERENCE SYSTEM POWER’ measurement.
NOTE In some cases, replacement of a lamp with one of the same power may require a new ‘REFERENCE
SYSTEM MEASUREMENT’ for correct detection of load decrease or load increase.
10 Declaration of variables
The requirements of Clause 10 of IEC 62386-101:2009 and Clause 10 of IEC 62386-102:2009
shall apply, with the following additional variables for this device type, indicated in Table 1.
Table 1 – Declaration of variables
a
Variable Default value Reset value Range of validity Memory
“DIMMING CURVE” 0 No change 0 – 1;
1 byte
(2 – 255 reserved)
b
“DIMMER STATUS” 0000 00UU No change except 0 - 255
c
1 byte RAM
bit 4 is reset to 0
“DIMMER FEATURES” Factory burn-in No change 0 - 255 each byte 3 bytes ROM
b
c
“FAILURE STATUS BYTE 1” UUU0 UUUU No change 0 - 255
1 byte RAM
b
“FAILURE STATUS BYTE 2” 000U UUUU No change 0 - 255 1 byte RAM
b
“DIMMER TEMPERATURE” UUUU UUUU No change 0 – 254, 255 ('Mask') 1 byte RAM
b
“RMS SUPPLY VOLTAGE” UUUU UUUU No change 0 – 254, 255 ('Mask') 1 byte RAM
b
“SUPPLY FREQUENCY” UUUU UUUU No change 0 – 254, 255 ('Mask') 1 byte RAM
b
“RMS LOAD VOLTAGE” UUUU UUUU No change 0 – 254, 255 ('Mask') 1 byte RAM
b
“RMS LOAD CURRENT” UUUU UUUU No change 0 – 254, 255 ('Mask') 1 byte RAM
b
“REAL LOAD POWER” UUUU UUUU No change 0 – 65534, 65535
2 bytes RAM
('Mask')
“LOAD RATING” Factory burn-in No change 0 – 254, 255 ('Mask') 1 byte ROM
“DEVICE TYPE” 4 No change 0 - 254 1 byte ROM
“EXTENDED VERSION 1 No change 0 - 255
1 byte ROM
NUMBER”
U = undefined
a
 Persistent memory (storage time indefinite) if not stated otherwise
b
 Power up value, except bit 7 of “FAILURE STATUS BYTE 1” and bit 4 of “DIMMER STATUS”
c
Bit 7 of “FAILURE STATUS BYTE 1” and Bit 4 of “DIMMER STATUS” shall be stored in persistent memory.

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SIST EN 62386-205:2010
62386-205 © IEC:2009 – 9 –
11 Definition of commands
The requirements of Clause 11 of IEC 62386-101:2009 and Clause 11 of IEC 62386-102:2009
shall apply, with the following exceptions:
Amendment of Clause 11 of IEC 62386-102:2009:
11.3.1 Queries related to status information
Amendment:
Command 144: YAAA AAA1 1001 0000 "QUERY STATUS"
The definition shall be as given in IEC 62386-102:2009, with the exception of the following
optional extra meaning to bit 0:
bit 0 Status of control gear; "0" = OK
“1” means thermal problem, supply problem or control gear not OK. “0” does not necessarily
imply that there is no thermal problem or supply problem.
Command 146: YAAA AAA1 1001 0010 "QUERY LAMP FAILURE"
The answer shall be as described in IEC 62386-102:2009, with the following meaning:
“Yes” = one of the following:
− open circuit;
− load increase;
− load decrease;
− load over-current shut down;
− load current overload with light level reduction;
− load voltage out of limits;
− load not suitable for selected dimming method.
“No” does not necessarily imply that no lamps have failed.
Command 153: YAAA AAA1 1001 1001 "QUERY DEVICE TYPE"
The answer shall be 4.
11.3.4 Application extended commands
Replacement:
Application extended commands shall be preceded by command 272 ‘ENABLE DEVICE TYPE
4’. Dimmer types of control gear shall not react to application extended commands preceded
by command 272 ‘ENABLE DEVICE TYPE X’ with X ≠ 4.
NOTE For other device types, these commands may be used in a different way.
11.3.4.1 Application extended configuration commands
Every configuration command (224 – 225) shall be received a second time within 100 ms
(nominal) before it is executed in order to reduce the probability of incorrect reception. No
other commands addressing the same control gear shall be sent between these two

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commands, otherwise the first such command shall be ignored and the respective
configuration sequence aborted.
Command 272 should be sent before the two instances of the respective control command,
but not repeated between them (see Figure 1).
Application extended Application extended
Command 272 configuration configuration
command command
Max. 100 ms
IEC  1797/08

Figure 1 – Application extended configuration command sequence example
Command 224: YAAA AAA1 1110 0000 "REFERENCE SYSTEM POWER"
The control gear shall measure and store system power levels in order to detect load increase
or load decrease.
NOTE The number of system power levels is optional; it is up to the manufacturer to decide upon the number each
type of control gear should measure.
The measured power levels shall be stored in the persistent memory. Commands received
during the measuring period shall be ignored except query commands and command 256.
After 15 min at most, the control gear shall finish the measurement process and shall go back
to normal operation. The measurement process shall be aborted if command 256
‘TERMINATE’ is received.
Command 225: YAAA AAA1 1110 0001 "SELECT DIMMING CURVE"
The dimming curve of the control gear shall be set according to the value of DTR.
DTR = 0 sets the dimming curve to the standard logarithmic output characteristic.
DTR = 1 sets the dimming curve to linear. In this case the light output shall be a linear
function of the light level given by any of the arc power control commands according to the
formula
n
X(n) = ⋅100 [%]
254
where
X = light output, expressed in %;
n = light level given by any of the arc power control commands.
All other values of the DTR are reserved for future needs and shall be not change the
dimming curve.
This setting shall be retained in non-volatile memory, and not cleared by a RESET command.
Commands 226-227: YAAA AAA1 1110 001X
Reserved for future needs. The control gear must not react in any way.
Commands 228-231: YAAA AAA1 1110 01XX
Reserved for future needs. The control gear must not react in any way.

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SIST EN 62386-205:2010
62386-205 © IEC:2009 – 11 –
Commands 232-235: YAAA AAA1 1110 10XX
Reserved for future needs. The control gear must not react in any way.
Commands 236-237: YAAA AAA1 1110 110X
Reserved for future needs. The control gear must not react in any way.
11.3.4.2 Application extended query commands
Command 238: YAAA AAA1 1110 1110 "QUERY DIMMING CURVE"
The answer shall be the dimming curve currently in use:
0 = standard logarithmic
1 = linear
NOTE 1 2-255 are reserved for future use, as specified in Table 1.
Command 239: YAAA AAA1 1110 1111 "QUERY DIMMER STATUS"
The answer shall be the following information:
bit 0 leading edge mode running
Dimming method bits, see command 240
}
bit 1 trailing edge mode running
bit 2 reference measurement running ‘0’ = No
bit 3 reserved for future use ‘0’ = default value
bit 4 non-logarithmic dimming curve active '0' = No
bit 5 reserved for future use ‘0’ = default value
bit 6 reserved for future use ‘0’ = default value
bit 7 reserved for future use ‘0’ = default value
The ‘QUERY DIMMER STATUS’ byte shall be updated regularly by the control gear according
to the actual situation.
Command 240: YAAA AAA1 1111 0000 "QUERY FEATURES"
Answer shall be byte 1 of the feature information. Byte 2 of the feature information shall be
automatically transferred to DTR and byte 3 of the feature information shall be automatically
transferred into DTR1 after reception of this command.
Feature byte 1 (back-channel):
bit 0 ‘1’ = load over-current shutdown can be queried ‘0’ = No
bit 1 ‘1’ = open circuit (no load) detection can be queried ‘0’ = No
bit 2 ‘1’ = detection of load decrease ca
...

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