ISO 7240-28:2008

Fire detection and alarm systems - Part 28: Fire protection control equipment

ISO 7240-28:2008 specifies requirements, methods of test and performance criteria for fire protection control equipment (f.p.c.e.) (ISO 7240-1:2005, Figure 1, item G) connected to automatic fire protection equipment (a.f.p.e.) (ISO 7240-1:2005, Figure 1, item H) installed in buildings. The f.p.c.e. receives signals from control and indicating equipment (ISO 7240-1:2005, Figure 1, item B), sends control signals to, and indicates the condition of, the a.f.p.e. The control signals are used to initiate automatic fire protection equipment, such as pumps associated with fire suppression systems, control doors, dampers, fans and the like.

Systèmes de détection et d'alarme d'incendie — Partie 28: Équipement de commande des systèmes de lutte contre l'incendie

General Information

• Status: Withdrawn
• Publication Date: 22-Oct-2008
• Withdrawal Date: 22-Oct-2008
• ICS: 13.220.20 - Fire protection
• Technical Committee: ISO/TC 21/SC 3 - Fire detection and alarm systems
• Drafting Committee: ISO/TC 21/SC 3 - Fire detection and alarm systems
• Current Stage: 9599 - Withdrawal of International Standard
• Start Date: 22-Aug-2014
• Completion Date: 13-Dec-2025

Relations

• Revised: ISO 7240-28:2014 - Fire detection and alarm systems - Part 28: Fire protection control equipment
• Effective Date: 10-May-2012

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 7240-28
First edition
2008-11-01
Fire detection and alarm systems —
Part 28:
Fire protection control equipment
Systèmes de détection et d'alarme d'incendie —
Partie 28: Équipement de commande des systèmes de lutte contre
l'incendie
Reference number
©
ISO 2008
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©  ISO 2008
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ii © ISO 2008 – All rights reserved

Contents Page
Foreword. iv
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms, abbreviated terms and definitions . 2
4 General requirements. 2
5 General requirements for indications. 3
6 Quiescent condition . 4
7 Fire protection condition . 4
8 Fault warning condition . 6
9 Disabled condition — Optional function . 8
10 Test condition — Optional function. 9
11 Functional-condition recorder — Optional function . 9
12 Design requirements . 10
13 Additional design requirements for software-controlled f.p.c.e. 13
14 Marking . 15
15 Tests. 15
16 Test report . 25
Annex A (informative) Explanation of access levels . 26
Annex B (informative) Design requirements for software-controlled fire-protection control
equipment. 28
Bibliography . 29

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 7240-28 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: Carbon monoxide fire detectors using electro-chemical cells
⎯ Part 7: Point-type smoke detectors using scattered light, transmitted light or ionization
⎯ Part 8: Carbon monoxide fire detectors using an electro-chemical cell in combination with a heat sensor
⎯ Part 9: Test fires for fire detectors [Technical Specification]
⎯ Part 10: Point-type flame detectors
⎯ Part 11: Manual call points
⎯ Part 12: Line type smoke detectors using a transmitted optical beam
⎯ Part 13: Compatibility assessment of system components
⎯ 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 fire detectors using scattered light, transmitted light or ionization sensors in
combination with a heat sensor
iv © ISO 2008 – All rights reserved

⎯ Part 16: Sound system control and indicating equipment
⎯ Part 19: Design, installation, commissioning and service of sound systems for emergency purposes
⎯ Part 21: Routing equipment
⎯ Part 22: Smoke-detection equipment for ducts
⎯ Part 27: Point-type fire detectors using a scattered-light, transmitted-light or ionization smoke sensor, an
electrochemical-cell carbon-monoxide sensor and a heat sensor
⎯ Part 28: Fire protection control equipment
A Part 17 dealing with short circuit isolators, a Part 18 dealing with input/output devices, a Part 20 dealing with
aspirating smoke detectors, Parts 24 and 25 dealing with components using radio links and a Part 26 dealing
with oil mist detectors are under development.
Introduction
This part of the ISO 7240 has been prepared by ISO/TC 21, Subcommittee SC 3, and is based on a draft
prepared by the 6th Subcommittee of the Chinese National Technical Committee for Fire Protection
Standardization.
Fire protection control equipment (f.p.c.e.) (item G in Figure 1 of ISO 7240-1:2005) receives signals from
control and indicating equipment (item B in Figure 1 of ISO 7240-1:2005) and sends initiating signals to
automatic fire protection equipment (a.f.p.e.) (item H in Figure 1 of ISO 7240-1:2005). The initiating signals
are used to operate automatic fire protection equipment, such as pumps associated with fire suppression
systems, control doors, dampers, fans and other equipment.
This part of ISO 7240 describes the mandatory functions that it is required to provide on all f.p.c.e. covered by
this part of ISO 7240, and optional functions with their associated requirements. 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 the f.p.c.e. covered by this
part of ISO 7240, with different combinations of functions, to conform to the specified requirements. It is
necessary that f.p.c.e. complying with this part of ISO 7240 fulfil the requirements of all of the mandatory
functions, together with the requirements of those optional functions that are provided.
Other functions associated with the fire detection and alarm system can also be provided, even if not specified
in this part of ISO 7240.
vi © ISO 2008 – All rights reserved

INTERNATIONAL STANDARD ISO 7240-28:2008(E)

Fire detection and alarm systems —
Part 28:
Fire protection control equipment
1 Scope
This part of ISO 7240 specifies requirements, methods of test and performance criteria for fire protection
control equipment (f.p.c.e.) (ISO 7240-1:2005, Figure 1, item G) connected to automatic fire protection
equipment (a.f.p.e.) (ISO 7240-1:2005, Figure 1, item H) installed in buildings.
The f.p.c.e. receives signals from control and indicating equipment (ISO 7240-1:2005, Figure 1, item B), sends
control signals to, and indicates the condition of, the a.f.p.e. The control signals are used to initiate automatic
fire protection equipment, such as pumps associated with fire suppression systems, control doors, dampers,
fans and the like.
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 7240-1:2005, Fire detection and alarm systems — Part 1: General and definitions
ISO 7240-2, Fire detection and alarm systems — Part 2: Control and indicating equipment
ISO 7240-4, Fire detection and alarm systems — Part 4: Power supply equipment
ISO 7240-13, Fire detection and alarm systems — Part 13: Compatibility assessment of system components
IEC 60068-1, Environmental testing — Part 1: General and guidance
IEC 60068-2-1, Environmental testing — Part 2-1: Tests — Tests A: Cold
IEC 60068-2-6, Environmental testing — Part 2-6: Tests — Test Fc: Vibration (sinusoidal)
IEC 60068-2-47, Environmental testing — Part 2-47: Tests — Mounting of specimens for vibration, impact and
similar dynamic tests
IEC 60068-2-75, Environmental testing — Part 2-75: Tests — Test Eh: Hammer tests
IEC 60068-2-78, Environmental testing — Part 2-78: Tests — Test Cab: Damp heat, steady state
IEC 60529:2001, Degrees of protection provided by enclosures (IP Code)
IEC 60721-3-3:2002, Classification of environmental conditions — Part 3-3: Classifications of groups of
environmental parameters and their severities — Stationary use at 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, abbreviated terms and definitions
3.1 Definitions
For the purposes of this document, the terms and definitions given in ISO 7240-1 and the following apply.
3.1.1
alarm zone
geographical subdivision of the protected premises for which a common zonal indication is provided
NOTE One alarm zone may consist of several floors or fire compartments.
3.1.2
functional condition
condition of the f.p.c.e. characterized by its indication at the f.p.c.e.
NOTE The functional conditions recognized in this part of ISO 7240 are the following:
⎯ quiescent condition specified in Clause 6;
⎯ fire protection condition specified in Clause 7;
⎯ fault warning condition specified in Clause 8;
⎯ disabled condition specified in Clause 9;
⎯ test condition specified in Clause 10.
3.1.3
indication
information given by an indicator
3.2 Abbreviated terms
⎯ a.f.p.e. automatic fire protection equipment
⎯ f.p.c.e. fire protection control equipment
4 General requirements
4.1 Functions
4.1.1 If functions other than those specified in this part of ISO 7240 are provided, they shall not jeopardize
compliance with any requirements of this part of ISO 7240.
4.1.2 If an optional function is included in the f.p.c.e., then all the corresponding requirements shall be met.
4.1.3 Functions required in this part of ISO 7240 may be performed within control and indicating equipment
complying with ISO 7240-2.
4.2 Power supply
The power supply for the f.p.c.e. shall comply with the requirements of ISO 7240-4. Where the f.p.c.e. is
included within the control and indicating equipment cabinet, both sets of equipment may share the same
power supply.
2 © ISO 2008 – All rights reserved

5 General requirements for indications
5.1 Display of functional conditions
5.1.1 The f.p.c.e. shall be capable of unambiguously indicating the following functional conditions, as
described in Clauses 6 to 10:
⎯ quiescent condition;
⎯ fire-protection condition;
⎯ fault-warning condition;
⎯ disablement condition;
⎯ test condition.
5.1.2 The f.p.c.e. shall be capable of being simultaneously in any combination of the following functional
conditions:
⎯ fire-protection condition;
⎯ fault-warning condition;
⎯ disablement condition;
⎯ test condition.
5.2 Display of indications
5.2.1 All mandatory indications shall be clearly identifiable, except where otherwise specified in this part of
ISO 7240.
5.2.2 The display of the fire-protection condition shall take priority over the display of other conditions.
5.3 Indications on alphanumeric displays
Where an alphanumeric display is used to display indications relating to different functional conditions, these
may be displayed at the same time. However, for each functional condition, there shall be only one window in
which all of the fields relating to that functional condition are grouped.
5.4 Indication of the supply of power
A visible indication shall be given by means of a separate light-emitting indicator while the f.p.c.e. is supplied
with power. Where the f.p.c.e. is integrated with the control and indicating equipment, a single power-supply
indication may be used for both sets of equipment.
5.5 Audible indications
The audible indication for the fault-warning condition may be the same as that for the fire-protection condition.
If they are different, the fire-protection condition indication shall have priority.
5.6 Additional indications
Where indications are used in addition to mandatory indications, these shall not result in contradiction or
confusion.
6 Quiescent condition
The f.p.c.e. shall be in the quiescent condition when the f.p.c.e. is powered and no other functional condition is
indicated. Any kind of system information may be displayed during the quiescent condition. However, no
indications shall be given that can be confused with the
⎯ fire protection condition;
⎯ fault warning condition;
⎯ disabled condition;
⎯ test condition.
7 Fire protection condition
7.1 Reception and processing of fire-protection condition signals
7.1.1 The f.p.c.e. shall receive fire-alarm condition signals from control and indicating equipment
(ISO 7240-1:2005, Figure 1, item B) and within 3 s send signals, as configured, to initiate a.f.p.e.
7.1.2 Fire-alarm condition signals shall be latched by the f.p.c.e. until reset.
7.1.3 The f.p.c.e. shall display the alarm zone in which the fire alarm occurred.
Where the f.p.c.e. is integrated with the control and indicating equipment, the alarm zone may be displayed on
the control and indicating equipment.
7.1.4 The output signals from the f.p.c.e shall be configurable, depending on the input signals, at access
level 3.
7.1.5 The mandatory indications and/or outputs shall not be falsified by multiple fire signals received from
the same or different control and indicating equipment, resulting from the simultaneous operation of two sets
of control and indicating equipment, and/or the operation of additional sets of control and indicating
equipments.
7.2 Indication of the fire-protection condition
7.2.1 Indication of the fire-protection condition is established when both of the following are present:
a) a visible indication, by means of a separate light-emitting indicator (the general fire-protection condition
indicator);
b) a visible indication, as specified in 7.3, of the f.p.c.e. output activation, which may be omitted for f.p.c.e.
capable of sending signals to only one a.f.p.e.
7.2.2 The time taken for processing signals within the f.p.c.e. shall not delay the indication of the fire-
protection condition at the f.p.c.e. by more than 3 s.
7.3 Automatic fire-protection equipment
7.3.1 Activation by fire-protection control equipment
7.3.1.1 Activation of the f.p.c.e. output shall be indicated by means of a separate light-emitting indicator,
or an alphanumeric display, or both, for each f.p.c.e. output.
Where an alphanumeric display is the only indicator, a separate light-emitting indicator (the general output
indicator) is also required.
4 © ISO 2008 – All rights reserved

7.3.1.2 The output indicators shall be separate and distinct from the fire-protection condition indicator.
7.3.1.3 If the indications are on an alphanumeric display that, because of its limited capacity, cannot
simultaneously indicate all activated equipment, at least the following shall apply.
a) The total number of f.p.c.e. outputs activated shall be displayed until the f.p.c.e. has been reset.
b) Activated f.p.c.e. outputs not currently indicated shall be capable of being displayed at access level 1 or 2.
A single, manual action shall be required for each display of output information. When the last activated
output is displayed, activation of the manual control shall cause the first output in the list to be re-
displayed.
c) The indication shall not be suppressed by indications of other functional conditions.
7.3.1.4 The f.p.c.e. output indicator shall flash when the f.p.c.e. output is activated and go steady when
the f.p.c.e. receives acknowledgement from the a.f.p.e.
NOTE 1 The criteria used for the acknowledgement signal are dependent on the a.f.p.e. For example, an
acknowledgement signal for a smoke-exhaust fan might not be sent from the exhaust-fan control equipment until the fan
has correctly started.
NOTE 2 Some activated equipment (e.g. valves for a gas cylinder) might not be capable of sending an
acknowledgement signal. In this example, the output indicator remains flashing, indicating to the operator that the status of
the a.f.p.e. remains unclear.
7.3.2 Activation by means other than by the fire protection control equipment
7.3.2.1 Activation of the a.f.p.e. by means other than the f.p.c.e. (e.g. a suppression system directly
activated by heat) shall be indicated by separate light-emitting indicators, or an alphanumeric display, or both,
for each f.p.c.e. output. The indicators may be the same as those used in 7.3.1.
7.3.2.2 When the a.f.p.e. is activated by means other than by the f.p.c.e., the f.p.c.e. output visual
indicator shall go steady and the audible indication, as specified in 12.10, shall activate.
NOTE If the a.f.p.e. is activated by means other than the f.p.c.e., the activation is not considered as a fire protection
condition; therefore, the reset function of 7.5 does not apply.
7.3.2.3 The audible indication shall not be silenced automatically.
7.3.2.4 If previously silenced, the audible indication shall re-sound for each new f.p.c.e. output in alarm.
7.4 Other indications during the fire protection condition
If fault-warning conditions, disablement conditions or test conditions are indicated by means of separate light-
emitting indicators and such indications are suppressed in the fire-protection condition, it shall be possible to
reveal these by means of a manual operation at access level 1.
7.5 Reset from the fire-protection condition
7.5.1 Indications of the fire-protection condition shall be reset manually (see 7.6.4) and may be reset
automatically when the fire alarm condition is reset at the control and indicating equipment.
7.5.2 Following a reset, the indication of the correct functional conditions, corresponding to any received
signals, shall either remain, or be re-established within 20 s.
7.6 Manual controls
7.6.1 General
7.6.1.1 Manual controls shall be available at access level 2 to activate and deactivate the outputs of the
f.p.c.e.
7.6.1.2 The time taken for processing manual control signals within the f.p.c.e. shall not delay the output
activation at the f.p.c.e. by more than 3 s. Where more than one output is activated by a single manual control,
the activation of each subsequent output may be delayed by not more than 3 s per output.
7.6.1.3 Manual controls shall suspend and take priority over automatic or programmed operation of the
f.p.c.e. outputs.
7.6.2 Indication of the activation of a manual control
7.6.2.1 Activation of the manual control shall be indicated by means of a separate light-emitting indicator,
or an alphanumeric display, or both, for each f.p.c.e. output. The indicator shall be cancelled when the manual
control is deactivated.
7.6.2.2 The activation of the manual control shall be indicated within 2 s of the completion of the manual
operation.
7.6.3 Other indications
If fault-warning conditions, disablement conditions or test conditions are indicated by means of separate light-
emitting indicators, and such indications are suppressed in the manual control condition, it shall possible to
reveal these by means of a manual operation at access level 1.
7.6.4 Reset
A manual control shall be provided to reset the f.p.c.e. from the fire-protection condition.
8 Fault warning condition
8.1 Reception and processing of fault warning signals
8.1.1 The f.p.c.e. shall enter the fault-warning condition when signals are received that, after necessary
processing, are interpreted as a fault.
8.1.2 The f.p.c.e. shall be capable of simultaneously recognizing all of the faults specified in 8.3.1 and 8.3.4
unless this is prevented by
⎯ the presence of a fire-protection condition from the same input, and/or
⎯ the disablement of the corresponding input or output, and/or
⎯ the testing of a corresponding input or output.
8.1.3 The presence of faults specified in 8.3.1 and 8.3.4 shall be indicated without prior manual intervention.
6 © ISO 2008 – All rights reserved

8.2 Indication of the fault warning condition
8.2.1 The fault-warning condition is established when all of the following are present:
a) a visible indication by means of a separate light-emitting indicator (the general fault-warning indicator);
b) a visible indication for each fault specified in 8.3.1;
c) an audible indication, as specified in 12.10.
8.2.2 Faults shall be indicated within 100 s of the occurrence of the fault or as specified in 13.6.
8.2.3 The indications may be suppressed during the fire-protection condition.
8.3 Indication of specific faults
8.3.1 The following indications of faults shall be indicated by means of a separate light-emitting indicator, or
an alphanumeric display, or both, and may be suppressed during the fire-protection condition:
a) an indication when the transmission of signals from control and indicating equipment is affected by
⎯ a short circuit in the input transmission path,
⎯ an interruption in the input transmission path;
b) an indication when the transmission of signals to a.f.p.e is affected by
⎯ a short circuit in the output transmission path,
⎯ an interruption in the output transmission path,
⎯ the removal of an output transmission path,
⎯ the disconnection of the a.f.p.e. from an output transmission path;
c) an indication at least common to any power-supply fault resulting from a short circuit or an interruption in
a transmission path from a power supply (ISO 7240-1:2005, Figure 1, item L), where the power supply is
contained in a cabinet different from that of the f.p.c.e. (indication may be satisfied by the absence of
other indicators displayed in the quiescent condition);
d) an indication at least common to any single earth fault that affects a mandatory function, and that is not
otherwise indicated as a fault of a supervised function;
e) an indication as a fault of the supervised function of the rupture of any fuse or the operation of any
protective device that is capable of affecting a mandatory function in the fire-protection condition;
f) an indication of any short circuit or interruption, at least common to all transmission paths between parts
of the f.p.c.e. contained in more than one mechanical cabinet, that is capable of affecting a mandatory
function and that is not otherwise indicated as a fault of a supervised function.
8.3.2 If indication is by means of separate light-emitting indicators, the same light-emitting indicator may be
used as that for the indication of the corresponding disable condition or test condition, although the indication
shall be distinguishable.
8.3.3 If the indication is on an alphanumeric display that cannot simultaneously indicate all the faults, the
following shall apply.
a) The presence of fault indications that have been suppressed shall be indicated.
b) Suppressed fault indications shall be capable of being displayed by means of a manual operation at
access level 1 or 2.
8.3.4 Any short circuit or interruption in a transmission path between parts of the f.p.c.e. contained in more
than one mechanical cabinet, where the fault does not affect a mandatory function, shall be indicated at least
by means of the general fault-warning indicator.
8.4 Fault warning indications during the fire protection condition
If faults are indicated by means of separate light-emitting indicators and such indications are suppressed in
the fire-protection condition, it shall be possible to reveal these by means of a manual operation at access
level 1.
8.5 Audible indication re-sound
If previously silenced, the audible indication shall re-sound for each newly recognized fault.
8.6 Reset from the fault warning condition
Indications of faults shall be capable of being reset automatically when the faults are no longer recognized.
9 Disabled condition — Optional function
9.1 General
9.1.1 The f.p.c.e. may have a provision to independently disable and re-enable each input and each output
by means of manual operations at access level 2.
9.1.2 Disablements shall inhibit all corresponding mandatory indications and/or outputs, but shall not
prevent other mandatory indications and/or outputs.
9.1.3 Disablement and re-enablement shall not be affected by a reset from the fire-protection condition,
manual control, the fault-warning condition or the test condition.
9.2 Indication of the disabled condition
9.2.1 The disabled condition shall be indicated visibly by means of both of the following:
a) a separate light-emitting indicator (the general disablement indicator);
b) an indication for each disablement, as specified in 9.1.1.
9.2.2 Disablements shall be indicated within 2 s of the completion of the manual operation.
9.3 Indications of specific disablements
9.3.1 If the indication of a specific disablement, as specified in 9.1.1, is by means of separate light-emitting
indicators, the same light-emitting indicator may be used as that for the indication of the corresponding fault or
test, although the indication shall be distinguishable.
9.3.2 If the indication is on an alphanumeric display that cannot simultaneously indicate all of the
disablements, at least the following shall apply.
a) The presence of disablement indications that have been suppressed shall be indicated.
b) It shall be possible to reveal suppressed indications by means of a manual operation at access level 1
or 2.
8 © ISO 2008 – All rights reserved

10 Test condition — Optional function
10.1 General
10.1.1 The f.p.c.e. may have a provision for testing the processing and indication of fire alarm signals from
control and indicating equipment. This may inhibit the requirements during the fire-protection condition that
correspond to that input. In this case, at least the following shall apply.
a) A test state shall be entered and cancelled only by a manual operation at access level 2 or 3.
b) It shall be possible to test the operation of each function individually.
c) Inputs in the test state shall not prevent the mandatory indications and outputs from inputs not in the test
state.
10.1.2 The test condition shall not be affected by a reset from the fire-protection condition, the disablement
condition, or the fault-warning condition.
10.2 Indication of the test condition
10.2.1 The test condition shall be indicated visibly, by means of the following:
a) a visible indication (the general test indicator);
b) an indication for each function in the test, as specified in 10.1.1.
10.2.2 Tests shall be indicated within 2 s of the completion of the manual operation.
10.2.3 The indications of each function in the test may be suppressed during the fire-protection condition but
the general test indicator shall not be suppressed.
10.3 Indication of specific tests
10.3.1 If indication of a specific test, as specified in 10.1.1, is by means of separate light-emitting indicators,
the same light-emitting indicator may be used as that for the indication of the corresponding fault or disable,
although the indication shall be distinguishable.
10.3.2 If the indication is on an alphanumeric display that cannot simultaneously indicate all of the tests, at
least the following shall apply.
a) The presence of test indications that have been suppressed shall be indicated.
b) Suppressed indications shall be capable of being displayed by means of a manual operation at access
level 1 or 2.
11 Functional-condition recorder — Optional function
The f.p.c.e. may have a provision to record functional conditions. In this case, the following shall apply.
a) The recorder shall record the date and time of at least the most recent 999 functional conditions in an
electronic log.
b) The date and time shall be maintained to within 30 s of the real time relevant to the fire detection and
alarm system.
c) The log shall be maintained in non-volatile memory for at least 14 d with no power to the f.p.c.e.
12 Design requirements
12.1 General requirements and manufacturer's declarations
The f.p.c.e. shall comply with the design requirements of Clause 12, when relevant to the technology used.
In order to assist the process of design inspection, the manufacturer shall declare the following in writing:
a) that the design has been carried out in accordance with a quality management system that incorporates a
set of rules for the design of all elements of the f.p.c.e. (e.g. ISO 9001);
b) that the components of the f.p.c.e. have been selected for the intended purpose, and are expected to
operate within their specification when the environmental conditions outside the cabinet of the f.p.c.e.
comply with class 3k5 of IEC 60721-3-3:2002.
12.2 Documentation
12.2.1 The manufacturer shall prepare installation and user documentation, which shall be submitted to the
testing authority together with the f.p.c.e. This shall be comprised of at least the following:
a) general description of the equipment, including a list of the
⎯ optional functions with the requirements of this part of ISO 7240,
⎯ functions relating to other parts of ISO 7240,
⎯ ancillary functions not required by this part of ISO 7240;
b) technical specifications of the inputs and outputs of the f.p.c.e., sufficient to permit an assessment of the
mechanical, electrical and software compatibility with other components of the system (e.g. as described
in ISO 7240-1), in accordance with ISO 7240-13, including, where relevant,
⎯ the power requirements for recommended operation,
⎯ the maximum number of inputs and outputs,
⎯ the maximum and minimum electrical ratings for each input and output,
⎯ information on the communication parameters employed on each transmission path,
⎯ recommended cable parameters for each transmission path,
⎯ fuse ratings;
c) installation information, including
⎯ the suitability for use in various environments,
⎯ if the f.p.c.e. is contained in more than one cabinet, how the requirements of 12.3.2 and 12.5.2 may
be met,
⎯ If the f.p.c.e. is designed for use with a power supply contained in a separate cabinet, how the
requirements of 12.3.2 and 12.5.3 may be met,
⎯ mounting instructions,
⎯ instructions for connecting the inputs and outputs;
10 © ISO 2008 – All rights reserved

d) configuring and commissioning instructions;
e) operating instructions;
f) maintenance information.
12.2.2 The manufacturer shall prepare design documentation, which shall be submitted to the testing
authority together with the f.p.c.e. This documentation shall include drawings, parts lists, block diagrams,
circuit diagrams and a functional description to such an extent that compliance with this part of ISO 7240 may
be checked and that a general assessment of the mechanical and electrical design is made possible.
12.3 Mechanical design requirements
12.3.1 The cabinet of the f.p.c.e. shall be of robust construction, consistent with the method of installation
recommended in the documentation. At access level 1, it shall meet at least classification IP30 of
IEC 60529:2001.
12.3.2 The f.p.c.e. may be housed in more than one cabinet. In this case, the related indicators for the
controls shall be grouped together in the same cabinet.
12.3.3 All mandatory manual controls and light-emitting indicators shall be clearly labelled to indicate their
purpose. The information shall be legible at 0,8 m distance in an ambient light intensity from 100 lx to 500 lx.
12.3.4 The terminations for transmission paths and the fuses shall be clearly labelled.
12.4 Electrical and other design requirements
12.4.1 The processing of signals shall give the highest priority to the fire-protection condition.
12.4.2 Transitions between the main and the standby power sources shall not change any indications and/or
the state of any outputs, except those relating to the power supplies.
12.4.3 If the f.p.c.e. has provision for disconnecting or adjusting the main or the standby power source, this
shall be possible only at access level 3.
12.5 Integrity of transmission paths
12.5.1 A fault in any transmission path between the f.p.c.e. and other components of the fire-detection
system (as defined in ISO 7240-1) shall not affect the correct function of the f.p.c.e. or of any other required
transmission path.
12.5.2 If the manufacturer's documentation shows that an f.p.c.e. contained in more than one cabinet may be
installed in separate locations (e.g. signal concentrator equipment), then the means shall be specified and
provided to ensure that a short circuit or an interruption in any transmission path between the cabinets does
not affect more than one function for longer than 300 s following the occurrence of the fault.
12.5.3 Where the f.p.c.e. is designed for use with a power supply (ISO 7240-1:2005, Figure 1, item L)
contained in a separate cabinet remote from the f.p.c.e., then an interface shall be provided for at least two
transmission paths to the power supply, such that a short circuit or an interruption in one does not prevent the
supply of power to the f.p.c.e.
12.6 Accessibility of indications and controls
12.6.1 Four access levels shall be provided on the f.p.c.e., from access level 1 (most accessible) to access
level 4 (least accessible) (see also Annex A). Allocation to an access level shall prevent access to an access
level with a higher number, but allow access to an access level of a lower number. Manual controls and other
functions shall be grouped on the appropriate access level, as specified in this part of ISO 7240.
12.6.2 All mandatory indications shall be visible at access level 1 without prior manual intervention (e.g. the
need to open a door).
12.6.3 Manual controls at access level 1 shall be accessible without special procedures.
12.6.4 Indications and manual controls that are mandatory at access level 1 shall also be accessible at
access level 2.
12.6.5 The entry to access level 2 shall be restricted by a special procedure.
12.6.6 The entry to access level 3 shall be restricted by a special procedure, differing from that for access
level 2.
12.6.7 The entry to access level 4 shall be restricted by special means that are not part of the f.p.c.e.
12.7 Indications by means of light emitting indicators
12.7.1 Mandatory indications from light-emitting indicators shall be visible in an ambient light intensity up to
500 lx, at any angle up to 22,5° from a line through the indicator perpendicular to its mounting surface
⎯ at 3 m distance for the general indications of functional condition;
⎯ at 3 m distance for the indication of the supply of power;
⎯ at 0,8 m distance for other indications.
12.7.2 For flashing indications, both the “on” period and the “off” period shall be greater than or equal to
0,25 s, and the frequencies of flash shall not be less than
⎯ 1 Hz for fire-protection condition indications;
⎯ 0,2 Hz for fault indications.
12.8 Indications on alphanumeric displays
12.8.1 If an alphanumeric display consists of elements or segments, the failure of one of these shall not
affect the interpretation of the displayed information.
12.8.2 Alphanumeric displays used for mandatory indications shall have at least one clearly distinguishable
window, consisting of at least two clearly identifiable fields.
12.8.3 If not included in the displayed information, the purpose of each field shall be clearly labelled.
12.8.4 Mandatory indications on an alphanumeric display shall be legible for the lesser of 1 h or the duration
of the standby power source, following the display of a new indication of fire or fault, at 0,8 m distance, in
ambient light intensities from 5 lx to 500 lx, at any angle from the normal to the plane of the display up to
⎯ 22,5° when viewed from each side;
⎯ 15° when viewed from above and below.
Following the lesser of 1 h or before the standby power source is exhausted where the primary power source
is not available, the indications shall be legible at 100 lx to 500 lx, at the above distance and angles. It shall be
possible to re-establish the legibility at 5 lx to 100 lx by means of a manual operation at access level 1.
12.8.5 Where the f.p.c.e. is integrated with fire control and indicating equipment, a separate window shall be
used for the f.p.c.e.
12 © ISO 2008 – All rights reserved

12.9 Colours of indications
12.9.1 The colours of the general and specific indications from light-emitting indicators shall be as follows:
a) red for indications of fire-protection conditions;
b) yellow for indications of
⎯ fault warnings,
⎯ disablements,
⎯ test state;
c) green for the indication that the f.p.c.e. is supplied with power.
12.9.2 The use of different colours is not necessary for indications on alphanumeric displays. However, if
different colours are used for different indications, the colours used shall be as specified in 12.9.1.
12.10 Audible indications
12.10.1 Audible indicators shall be part of the f.p.c.e. The same device may be used for both fire-protection
condition and fault-warning condition indications.
12.10.2 The audible indication shall be capable of being silenced by means of a separate manual control at
access level 1 or 2.
12.10.3 The minimum sound level at a distance of 1 m with any access door on the f.p.c.e. closed, shall be
either
⎯ 60 dB(A) for fire-protection condition indications and 50 dB(A) for fault-warning indications, or
⎯ 85 dB(A) for fire-protection condition indications and 70 dB(A) for fault-warning indications.
NOTE The provision for two sets of audible indications allows for some f.p.c.e. being installed in areas that are
normally occupied (such as a security room).
12.10.4 The sound level shall be measured in anechoic conditions.
12.11 Testing of visual indicators
All mandatory visual indicators shall be testable by a manual operation at access level 1 or level 2.
13 Additional design requirements for software-controlled f.p.c.e.
13.1 General requirements and manufacturer's declarations
The f.p.c.e. may contain elements that are controlled by software in order to fulfil requirements of this part of
ISO 7240. In this case, the f.p.c.e. shall comply with the requirements of Clause 13 as well as those of
Clause 12, when relevant to the technology used.
13.2 Software documentation
13.2.1 The manufacturer shall prepare documentation that gives an overview of the software design, which
shall be submitted to the testing authority together with the f.p.c.e. This documentation shall be in sufficient
detail for the design to be inspected for compliance with this part of ISO 7240.
13.2.2 The manufacturer shall prepare and maintain detailed design documentation. It is not necessary that
this be submitted to the testing authority, but it shall be available for inspection in a manner that respects the
manufacturer's rights of confidentiality.
13.3 Software design
In order to ensure the reliability of the f.p.c.e., measures shall be included in the program to prevent the
occurrence of a deadlock in the system.
13.4 Program monitoring
13.4.1 The execution of the program shall be monitored (see also Annex B). The monitoring device shall
signal a system fault if routines associated with the main functions of the program are not executed within a
time limit of 100 s.
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