ISO 7240-2:2017

INTERNATIONAL ISO
STANDARD 7240-2
Second edition
2017-11
Fire detection and alarm systems —
Part 2:
Fire detection control and indicating
equipment
Systèmes de détection et d'alarme d'incendie —
Partie 2: Équipement de contrôle et de signalisation
Reference number
©
ISO 2017
© ISO 2017, Published in Switzerland
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ii © ISO 2017 – All rights reserved

Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
4 Requirements . 2
4.1 General . 2
4.2 Compliance . 3
4.3 Quiescent condition . 3
4.4 Fire alarm condition . 3
4.4.1 Reception and processing of fire signals . 3
4.4.2 Indication of fire alarm condition . 4
4.4.3 Indication of fire detection zones in alarm . 4
4.4.4 Audible indication . . 4
4.4.5 Other indications during the fire alarm condition . 5
4.4.6 Reset from fire alarm condition . 5
4.4.7 Output of fire alarm condition . 5
4.4.8 Output to fire alarm signalling function — Optional function . 5
4.4.9 Control of fire alarm routing function — Optional function . 6
4.4.10 Output to fire protection control function — Optional function . 6
4.4.11 Delays to outputs — Optional function . 7
4.4.12 Dependency on more than one alarm signal — Optional function . 8
4.4.13 Alarm counter — Optional function . 9
4.4.14 Output of standard emergency evacuation signal — Optional function . 9
4.5 Fault warning condition . 9
4.5.1 Reception and processing of fault signals . 9
4.5.2 Indication of faults. 9
4.5.3 Fault monitoring of fire protection control function — Optional function .11
4.5.4 Fault signals from points — Optional function.11
4.5.5 Total loss of the power supply — Optional function .11
4.5.6 System fault .11
4.5.7 Audible indication . .11
4.5.8 Reset of fault indications.12
4.5.9 Fault output .12
4.5.10 Output to fault warning routing function — Optional function .12
4.6 Disabled condition — Optional function .12
4.6.1 General.12
4.6.2 Disablements . . .13
4.6.3 Disablement and enablement of addressable points — Optional function .13
4.6.4 Indication of the disabled condition .13
4.7 Test condition — Optional function .14
4.7.1 General requirements .14
4.7.2 Indication of test condition .14
4.7.3 Indication of fire detection zones in test state .14
4.8 Supervisory signal condition — Optional function .14
4.8.1 Reception and processing of supervisory signals .14
4.8.2 Indication of the supervisory signal condition .15
4.8.3 Indication of the supervisory signals from fire detection zones .15
4.8.4 Audible indication . .15
4.8.5 Reset of supervisory signal .16
4.8.6 Supervisory signal condition output .16
4.9 Standardized input/output interface — Optional function .16
4.10 Accessibility of indications and controls .17
4.11 Visual indications.17
4.11.1 General.17
4.11.2 Indications by means of light-emitting indicators .17
4.11.3 Indications on alphanumeric displays .18
4.12 Audible indications.19
4.13 Additional indications.19
4.14 Testing of indicators .19
4.15 Power supply .19
4.16 Mechanical .19
4.17 Integrity of transmission paths .20
4.18 Software .20
4.18.1 General.20
4.18.2 Program monitoring .20
4.18.3 Storage of programs and data .21
4.18.4 Monitoring of memory contents .21
5 Tests .21
5.1 General .21
5.1.1 Standard atmospheric conditions for testing .21
5.1.2 Specimen configuration .22
5.1.3 Mounting and orientation .22
5.1.4 Electrical connection .22
5.1.5 Provision for tests .22
5.2 Functional test .22
5.2.1 Object of test .22
5.2.2 Test schedule .22
5.2.3 Fire alarm condition .23
5.2.4 Fault warning condition .23
5.2.5 Disabled condition .23
5.2.6 Requirements .23
5.3 Environmental tests .23
5.3.1 General.23
5.3.2 Tests for one specimen .24
5.3.3 Tests for two specimens .24
5.3.4 Tests for three specimens .24
5.3.5 Requirements .24
5.4 Cold (operational) .24
5.4.1 Object of test .24
5.4.2 Test procedure .25
5.4.3 Requirements .25
5.5 Damp heat, steady-state (operational).25
5.5.1 Object of test .25
5.5.2 Test procedure .26
5.5.3 Requirements .26
5.6 Impact (operational) — Optional test .26
5.6.1 Object of test .26
5.6.2 Test procedure .27
5.6.3 Requirements .27
5.7 Vibration, sinusoidal (operational) — Optional test .28
5.7.1 Object of test .28
5.7.2 Test procedure .28
5.7.3 Requirements .29
5.8 Electromagnetic compatibility (EMC) — Immunity tests (operational) .29
5.8.1 Test procedure .29
5.8.2 Requirements .30
5.9 Supply voltage variation (operational) .30
5.9.1 Object of test .30
5.9.2 Test procedure .30
5.9.3 Requirements .30
iv © ISO 2017 – All rights reserved

5.10 Damp heat, steady-state (endurance) .31
5.10.1 Object of test .31
5.10.2 Test procedure .31
5.10.3 Requirements .31
5.11 Vibration, sinusoidal (endurance) .32
5.11.1 Object of test .32
5.11.2 Test procedure .32
5.11.3 Requirements .32
5.12 Dry heat (operational) — Optional .33
5.12.1 Object of test .33
5.12.2 Test procedure .33
5.12.3 Requirements .33
6 Test report .33
7 Marking .34
8 Data .34
8.1 General .34
8.2 Software documentation .34
8.3 Hardware documentation .35
8.4 Installation and user documentation .35
Annex A (informative) Optional functions with requirements and alternatives .37
Annex B (informative) Processing of signals from fire detectors .38
Annex C (informative) Explanation of fire detection zones and zonal indication of fire alarms .39
Annex D (informative) Delays to outputs .40
Annex E (informative) Fault recognition and indication .42
Annex F (informative) Systems related to the supervisory signal condition .43
Annex G (informative) Standardized input/output interface for the connection of ancillary
equipment (e.g. fire brigade panel) .44
Annex H (informative) Explanation of access levels .45
Annex I (informative) Integrity of transmission paths .47
Annex J (informative) Design requirements for software-controlled fire detection control
and indicating equipment .48
Bibliography .49
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
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URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire
fighting, Subcommittee SC 3, Fire detection and alarm systems.
This second edition cancels and replaces the first edition (ISO 7240-2:2003), which has been technically
revised.
A list of all the parts in the ISO 7240 series can be found on the ISO website.
vi © ISO 2017 – All rights reserved

Introduction
The fire detection control and indication function (ISO 7240-1:2014, Figure 1, item B), within a fire
detection and alarm system (FDAS) installed in and around buildings, is provided by the fire detection
control and indicating equipment (FDCIE).
FDCIE receives signals from the fire detection function (ISO 7240-1:2014, Figure 1, item A) and the
manual initiating function (ISO 7240-1:2014, Figure 1, item D). FDCIE processes received signals and
may indicate information at the FDCIE and/or send signals to other functions within the fire detection
and alarm system. The signals are used to provide notification to building occupants and other parties
responsible for building safety in accordance with the design objectives for the fire detection and alarm
system (see also ISO 7240-14 or equivalent national design standard).
This document is drafted on the basis of mandatory functions, which are provided on all fire detection
control and indicating equipment, and optional functions (with requirements) which may be provided.
It is intended that the options be used for specific applications, and to meet the fire detection and alarm
system design objectives. Each optional function is included as a separate entity, with its own set of
associated requirements, in order to permit fire detection control and indicating equipment with many
different combinations of functions to comply with this document.
Other functions associated with fire detection and fire alarm may also be provided, even if not specified
in this document.
INTERNATIONAL STANDARD ISO 7240-2:2017(E)
Fire detection and alarm systems —
Part 2:
Fire detection control and indicating equipment
1 Scope
This document specifies requirements, test methods and performance criteria for fire detection control
and indicating equipment (FDCIE) for use in fire detection and fire alarm systems installed in buildings.
For the testing of other types of FDCIE, this document is intended to be used only for guidance. FDCIE
with special characteristics, developed for specific risks, are not covered in this document.
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.
ISO 7240-1:2014, Fire detection and alarm systems — Part 1: General and definitions
ISO 7240-4, Fire detection and alarm systems — Part 4: Power supply equipment
ISO 7240-14, Fire detection and alarm systems — Part 14: Design, installation, commissioning and service
of fire detection and fire alarm systems in and around buildings
ISO 8201, Acoustics — Audible emergency evacuation signal
IEC 60068-1, Environmental testing — Part 1: General and guidance
IEC 60068-2-1, Environmental testing — Part 2: Tests. Tests A: cold
IEC 60068-2-6, Environmental testing — Part 2: Tests. Test Fc: vibration (sinusoidal)
IEC 60068-2-47, Environmental testing — Part 2: Test methods — Mounting of components, equipment and
other articles for vibration, impact and similar dynamic tests
IEC 60068-2-75, Environmental testing — Part 2: Tests — Test Eh: Hammer tests
IEC 60068-2-78, Environmental testing — Part 2-78: Tests — Test Cab: Damp heat, steady state
IEC 60529, Degrees of protection provided by enclosures (IP Code)
IEC 60721-3-3, Classification of environmental conditions — Part 3: Classification of groups of
environmental parameters and their severities — Section 3: Stationary use and weather protected locations
IEC 62599-2, Alarm systems — Part 2: Electromagnetic compatibility — Immunity requirements for
components of fire and security alarm systems
3 Terms, definitions and abbreviated terms
For the purposes of this document, the terms and definitions given in ISO 7240-1 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 Terms and definitions
3.1.1
functional condition
condition characterized by its indication
Note 1 to entry: The functional conditions recognized in this document are the following:
— fire alarm condition, when a fire alarm is indicated;
— supervisory signal condition, when a supervisory signal is indicated;
— fault warning condition, when a fault is indicated;
— disabled condition, when the disablement of functions is indicated;
— test condition, when the testing of functions is indicated;
— quiescent condition, when FDCIE is powered by a power supply in accordance with ISO 7240-4 and no other
functional condition is indicated.
3.2 Abbreviated terms
EMC electro-magnetic compatibility
IP ingress protection
PSE power supply equipment
4 Requirements
4.1 General
4.1.1 FDCIE shall have provision for grouping the signals from points to provide zonal indications.
4.1.2 The processing of signals shall give the highest priority to the indication of fire alarms.
4.1.3 FDCIE shall be capable of unambiguously indicating the following functional conditions, in
accordance with 4.3 to 4.8:
— quiescent condition;
— fire alarm condition;
— fault warning condition;
— disablement condition, where the condition is provided;
— test condition, where the condition is provided;
— supervisory signal condition, where the condition is provided.
2 © ISO 2017 – All rights reserved

4.1.4 FDCIE shall be capable of being simultaneously in any combination of the following functional
conditions:
— fire alarm condition;
— fault warning condition;
— disablement condition, where the condition is provided;
— test condition, where the condition is provided;
— supervisory signal condition, where the condition is provided.
4.2 Compliance
4.2.1 In order to comply with this document, FDCIE shall meet the following requirements.
a) Clause 4, which shall be verified by visual inspection or engineering assessment, shall be tested in
accordance with Clause 5 and shall meet the requirements of the tests.
b) Clause 7 and 8, which shall be verified by visual inspection.
4.2.2 If an optional function with requirements is included in FDCIE, then all the corresponding
requirements shall be met (see Annex A for a list of optional functions).
4.2.3 If functions other than those specified in this document are provided, they shall not jeopardize
compliance with any requirement of this document.
4.3 Quiescent condition
Any kind of system information may be displayed during the quiescent condition. However, no
indications shall be given which could be confused with indications used in the
— fire alarm condition,
— fault warning condition,
— disabled condition,
— test condition, or
— supervisory signal condition.
4.4 Fire alarm condition
4.4.1 Reception and processing of fire signals
4.4.1.1 FDCIE shall enter the fire alarm condition when signals are received which, after any necessary
processing (see Annex B), are interpreted as a fire alarm.
4.4.1.2 FDCIE shall be capable of receiving, processing and indicating signals from fire detection zones.
A signal from one fire detection zone shall not falsify the processing storing and/or indication of signals
from other fire detection zones.
4.4.1.3 Except where 4.4.11 or 4.4.12 applies, the time taken by scanning, interrogation, or other
processing of signals from fire detectors, in addition to that required to take the fire alarm decision,
shall not delay the indication of the fire alarm condition, or of a new fire detection zone in alarm by
more than 10 s.
4.4.1.4 FDCIE shall enter the fire alarm condition within 10 s of the activation of any manual call point.
4.4.1.5 The mandatory indications and/or outputs shall not be falsified by multiple fire signals received
from the same or different detection circuits as a result of the simultaneous operation of two points, the
operation of further points or both.
4.4.2 Indication of fire alarm condition
The fire alarm condition shall be indicated without prior manual intervention. The indication is
established when all of the following are present:
a) a visible indication, by means of a separate red light-emitting indicator (the general fire alarm
indicator);
b) a visible indication, as specified in 4.4.3, of the fire detection zones in alarm, which may be omitted
for FDCIE capable of receiving signals from only one fire detection zone;
c) an audible indication, as specified in 4.4.4.
4.4.3 Indication of fire detection zones in alarm
4.4.3.1 The fire detection zones in alarm shall be visibly indicated by means of a separate red light-
emitting indicator for each fire detection zone or an alphanumeric display or both (see also Annex C).
4.4.3.2 If the zonal indications are on an alphanumeric display, which because of its limited capacity
cannot simultaneously indicate all the fire detection zones in alarm, at least the following shall be
displayed:
a) the first fire detection zone in alarm, in a field at the top of the display;
b) additional fire detection zones in alarm, in another field;
c) the total number of fire detection zones in alarm;
d) fire detection zones in alarm not currently indicated, at access level 1 or 2. A single manual action
shall be required to display each zonal information. Fields or the alarm window, may be temporarily
suppressed to permit the display of additional fire detection zones in alarm; however, if there is no
further manual intervention, the display shall meet the requirements of 4.4.3.2 a), 4.4.3.2 b) and
4.4.3.2 c) within 30 s of the suppression.
4.4.4 Audible indication
4.4.4.1 The audible indication shall be capable of being silenced at access level 1 or 2 by means of a
separate manual control. This control shall only be used for silencing the audible indication, and may
be the same as that used for silencing in the fault warning condition. Access level for the silence control
may be configurable, see A.2. Which level is appropriate is be determined by the site requirements for
management of the FDAS.
4.4.4.2 The audible indication shall not be silenced automatically.
4.4.4.3 Silencing the audible indication may be accompanied by changes in the visual indications
of fire alarm (e.g. the indication of light emitting indicators may change from flashing to steady or the
information given on the alphanumeric display may be updated), provided that the conditions are still
indicated as required in this document.
4 © ISO 2017 – All rights reserved

4.4.4.4 The audible indication shall re-sound for each new fire detection zone in alarm. If the option
in 4.4.8.1 d) 3) is provided, then a new alarm in the same detection zone shall also re-sound the audible
indication.
4.4.5 Other indications during the fire alarm condition
4.4.5.1 If faults, disablements or tests are indicated by means of separate light-emitting indicators, and
such indications are suppressed in the fire alarm condition, it shall be possible to reveal these by means
of a manual operation at access level 1 or 2.
4.4.5.2 If the fire alarm indications are on an alphanumeric display, the following shall apply to the
display of other information on the alphanumeric display.
a) Information not related to the fire alarm condition shall be suppressed unless the display has more
than one window, one of which is exclusively reserved for fire alarm indications.
b) Suppressed indications of faults, disablements and optionally, test or supervisory modes, shall
each be capable of being displayed at any time by manual operations at access level 1 or 2. These
operations shall be different from, or additional to, that specified in 4.4.3.2 d) for displaying fire
detection zones in alarm and shall display the suppressed indications independently of each other.
c) Fields or the alarm window, may be temporarily suppressed to permit the display of faults,
disablements and optionally, test or supervisory modes, however, the display shall meet the
requirements of 4.4.3.2 a), 4.4.3.2 b) and 4.4.3.2 c) within 30 s of the suppression.
4.4.6 Reset from fire alarm condition
4.4.6.1 FDCIE shall be reset from the fire alarm condition at access level 2, by means of a separate
manual control, or as specified in 4.6.1.5 or 4.9 (if provided). This control shall be used only for reset and
may be the same as that used for reset from the fault warning condition.
4.4.6.2 Following a reset operation, the correct functional conditions, corresponding to any received
signals, shall either remain, or be re-established within 60 s. Reset shall either be completed within 20 s
following the manual operation, or where a reset cannot be completed in 20 s, it shall be indicated within
20 s that the reset process is running.
4.4.7 Output of fire alarm condition
4.4.7.1 At least one output that signals the fire alarm condition shall be provided, which may be an
output in accordance with 4.4.8, 4.4.9 or 4.4.10.
4.4.7.2 Except where 4.4.11 or 4.4.12 or both apply, FDCIE shall activate all mandatory outputs within
3 s of the indication of a fire alarm condition.
4.4.7.3 Except where 4.4.11 applies, FDCIE shall activate all mandatory outputs within 10 s of the
activation of any manual call point.
4.4.8 Output to fire alarm signalling function — Optional function
4.4.8.1 FDCIE shall have provision for the automatic transmission of fire alarm signals to the fire alarm
signalling function (see ISO 7240-1:2014, Figure 1, item C). In this case, the following shall apply.
a) It shall be possible to disable fire alarm signalling devices at access level 2.
b) Following disablement, it shall be possible to re-enable fire alarm signalling devices at access
level 2.
c) It shall not be possible to automatically disable fire alarm signalling devices.
d) It shall be possible to configure automatic re-activation of fire alarm signalling devices to at least
the following modes:
1) no automatic re-activation;
2) automatically re-activate on an alarm from another zone;
3) automatically re-activate on an alarm from the same zone.
e) Activation of the output to C shall be indicated by means of a separate light emitting indicator, an
alphanumeric display, or both. The indication shall be at least common for all such controls, and
shall not be suppressed during the fire alarm condition.
4.4.8.2 Where the fire alarm signalling function is not controlled directly from FDCIE, signals may be
transferred to the fire alarm control and indication function (see ISO 7240-1:2014, Figure 1, item M).
4.4.9 Control of fire alarm routing function — Optional function
4.4.9.1 Output to fire alarm routing function
FDCIE may have provision for the automatic transmission of fire alarm signals to the fire alarm routing
function (see ISO 7240-1:2014, Figure 1, item E). The transmission of the signal may be indicated by
means of a separate red light-emitting indicator or a field on the alphanumeric display or both. In this
case, the indication shall remain until the fire alarm condition is reset.
4.4.9.2 Input from fire alarm routing function
Where the output specified in 4.4.9.1 is provided, FDCIE may have an input which is capable of
receiving signals from the fire alarm routing function (see ISO 7240-1:2014). In this case, the reception
of the signals shall be indicated by means of a separate red light-emitting indicator or a field on the
alphanumeric display, or both. The light-emitting indicator may be used instead of the indicator
specified in 4.4.9.1. The indication
...