ISO 7240-2:2003

INTERNATIONAL ISO
STANDARD 7240-2
First edition
2003-09-15
Fire detection and alarm systems —
Part 2:
Control and indicating equipment
Systèmes de détection et d'alarme d'incendie —
Partie 2: Équipement de contrôle et de signalisation

Reference number
©
ISO 2003
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ii © ISO 2003 — All rights reserved

Contents Page
Foreword. iv
Introduction . v
1 Scope. 1
2 Normative references . 1
3 Terms and definitions. 2
4 General requirements . 4
5 General requirements for indications . 4
6 Quiescent condition. 5
7 Fire alarm condition. 6
8 Supervisory signal condition — Optional function . 10
9 Fault warning condition (see also Annex F) . 12
10 Disabled condition — Optional function .15
11 Test condition — Optional function . 16
12 Standardized input/output interface — Optional function (see also Annex H). 17
13 Design requirements . 18
14 Additional design requirements for software-controlled control and indicating equipment . 22
15 Marking. 23
16 Tests. 24
Annex A (informative) Explanation of access levels. 34
Annex B (informative) Optional functions with requirements and alternatives. 36
Annex C (informative) Processing of signals from fire detectors . 37
Annex D (informative) Explanation of zones and zonal indication of fire alarms. 38
Annex E (informative) Delays to outputs . 39
Annex F (informative) Systems related to the supervisory signal condition . 41
Annex G (informative) Fault recognition and indication . 42
Annex H (informative) Standardized input/output interface for the connection of ancillary
equipment (e.g. fire brigade panel) . 43
Annex I (informative) Integrity of transmission paths . 44
Annex J (informative) Design requirements for software-controlled control and indicating
equipments . 45

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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 7240-2 was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire fighting,
Subcommittee SC 3, Fire detection and alarm systems.
ISO 7240 consists of the following parts, under the general title Fire detection and alarm systems:
 Part 1: General and definitions
 Part 2: Control and indicating equipment
 Part 4: Power supply equipment
 Part 5: Point-type heat detectors
 Part 6: Point-type fire detectors for carbon monoxide
 Part 7: Point-type smoke detectors using scattered light, transmitted light or ionization
 Part 11: Manual call points
 Part 14: Guidelines for drafting codes of practice for design, installation and use of fire detection and fire
alarm systems in and around buildings [Technical Report]
 Part 15: Point-type multisensor (light and heat) fire detectors
Compatibility assessment of system components and carbon monoxide point-type fire detectors using
electrochemical cells are to form the subjects of future Parts 13 and 16.
iv © ISO 2003 — All rights reserved

Introduction
This part of ISO 7240 is drafted on the basis of mandatory functions, which are to be provided on all control
and indicating equipment, and optional functions (with requirements) which may be provided. It is intended
that the options be used for specific applications, as recommended in application guidelines.
Each optional function is included as a separate entity, with its own set of associated requirements, in order to
permit control and indicating equipment with many different combinations of functions to comply with this part
of ISO 7240.
Other functions associated with fire detection and alarm may also be provided, even if not specified in this part
of ISO 7240.
INTERNATIONAL STANDARD ISO 7240-2:2003(E)

Fire detection and alarm systems —
Part 2:
Control and indicating equipment
1 Scope
This part of ISO 7240 specifies requirements, test methods and performance criteria for control and indicating
equipment (c.i.e.) for use in fire detection and fire alarm systems installed in buildings.
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.
ISO 7240-1:1988, Fire detection and alarm systems — Part 1: General and definitions
ISO 7240-4, Fire detection and alarm systems — Part 4: Power supply equipment
ISO 7240-7, Smoke detectors — Part 7: Point detectors using scattered light, transmitted light or ionization
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 60068-2-2, Environmental testing — Part 2: Tests. Tests B: dry heat
IEC 60068-2-3, Environmental testing — Part 2: Tests. Test Ca: damp heat, steady state
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 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
EN 50130-4, Alarm systems — Part 4: Electromagnetic compatibility — Product family standard: Immunity
requirements for components of fire, intruder and social alarm systems
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 7240-1 and the following apply. See
also Figure 1 of ISO 7240-1:1988.
3.1
access level
one of several states of a c.i.e. in which selected
 controls can be operated,
 manual operations can be carried out,
 indications are visible, and/or
 information can be obtained
See annex A.
3.2
addressable point
point which can be individually identified at the c.i.e.
cf. point (3.15)
3.3
alphanumeric display
indicator capable of giving information by the display of messages consisting of text and/or numeric characters
3.4
confirmation signal
signal from a fire detector or manual call point which terminates a first alarm state
3.5
detection circuit
transmission path which connects points to the c.i.e.
cf. point (3.15) and transmission path (3.22)
3.6
earth fault
unwanted connection between earth potential and any part of the c.i.e., transmission paths to the c.i.e. or
transmission paths between parts of the c.i.e.
3.7
field
sub-division of a window
3.8
first alarm signal
signal from a fire detector or manual call point which is interpreted as a fire alarm, but following which the c.i.e.
enters a first alarm state
3.9
first alarm state
state of the c.i.e. following the receipt of a first alarm signal during which mandatory functions of the c.i.e. may
be inhibited
2 © ISO 2003 — All rights reserved

3.10
functional condition
condition of the c.i.e. characterized by its indication at the c.i.e.
NOTE The functional conditions recognized in this part of ISO 7240 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 the c.i.e. is powered by a power supply in accordance with ISO 7240-4 and no other
functional condition is indicated.
3.11
indicator
a device which can change its state to give information
3.12
indication
information given by an indicator
3.13
mandatory adj.
qualification applied to those functions required to be provided on all c.i.e. and the functions' requirements and
to the requirements of any optional functions that have requirements, if such optional functions are provided
3.14
non-volatile memory
memory elements which do not require the presence of an energy source for the retention of their contents
3.15
point
component connected to a detection circuit able to transmit or receive information in relation to fire detection
NOTE Includes Items A and D in Figure 1 of ISO 7240-1:1988.
3.16
program
software necessary for c.i.e. to comply with at least the requirements of this part of ISO 7240, including
initializing data, reset and interrupt vectors, operating code and declarations
3.17
reset
operation capable of terminating the fire alarm condition and/or the fault warning condition
3.18
running data
alterable data subject to temporary modification during operation, either automatically or by manual controls
3.19
separate adj.
physically separate and exclusively provided for the purpose or purposes stated in this part of ISO 7240
...