ISO 7240-28:2014

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

ISO 7240-28:2014 specifies requirements, methods of test, and performance criteria for fire protection control equipment (FPCE) connected to automatic fire protection equipment (AFPE) installed in buildings. The FPCE receives signals from fire detection control and indicating equipment, sends control signals to, and indicates the condition of, the AFPE. 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• Status: Withdrawn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: 21-Aug-2014
• Withdrawal Date: 21-Aug-2014
• 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: 29-Sep-2020
• Completion Date: 13-Dec-2025

Relations

• Revises: ISO 7240-28:2008 - Fire detection and alarm systems - Part 28: Fire protection control equipment
• Effective Date: 10-May-2012

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 7240-28
Second edition
2014-08-15
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 2014
© ISO 2014
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
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Published in Switzerland
ii © ISO 2014 – All rights reserved

Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 2
3 Terms, abbreviated terms, and definitions . 2
3.1 Definitions . 2
3.2 Abbreviated terms . 3
4 Requirements . 3
4.1 General . 3
4.2 Quiescent condition . 3
4.3 Fire protection condition . 4
4.4 Fault warning condition . 6
4.5 Disabled condition — Optional function . 8
4.6 Test condition — Optional function . 9
4.7 Functional condition recorder — Optional function . 9
4.8 Accessibility of indications and controls .10
4.9 Visual indications.10
4.10 Audible indications.11
4.11 Additional indications.12
4.12 Power supply .12
4.13 Mechanical .12
4.14 Integrity of transmission paths .12
4.15 Software .13
4.16 Data .14
5 Tests .15
5.1 General .15
5.2 Functional test .16
5.3 Environmental tests .17
5.4 Cold (operational) .18
5.5 Damp heat, steady-state (operational).19
5.6 Impact (operational) .20
5.7 Vibration, sinusoidal (operational) .21
5.8 Electromagnetic compatibility (EMC), immunity tests (operational) .22
5.9 Supply voltage variation (operational) .23
5.10 Damp heat, steady-state (endurance) .24
5.11 Vibration, sinusoidal (endurance) .24
6 Test report .25
7 Marking .25
Annex A (informative) Explanation of access levels .27
Annex B (informative) Design requirements for software-controlled fire protection
control equipment .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.
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
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is 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 7240-28:2008), which has been technically
revised.
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 3: Audible alarm devices
— 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
iv © ISO 2014 – All rights reserved

— Part 14: Design, installation, commissioning and service of fire detection and fire alarm systems in and
around buildings
— Part 15: Point type fire detectors using scattered light, transmitted light or ionization sensors in
combination with a heat sensor
— Part 16: Sound system control and indicating equipment
— Part 17: Short-circuit isolators
— Part 18: Input/output devices
— Part 19: Design, installation, commissioning and service of sound systems for emergency purposes
— Part 20: Aspirating smoke detectors
— Part 21: Routing equipment
— Part 22: Smoke-detection equipment for ducts
— Part 23: Visual alarm devices
— Part 24: Sound-system loudspeakers
— Part 25: Components using radio transmission paths
— 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
Introduction
This part of the ISO 7240 has been prepared by ISO/TC 21, Subcommittee SC 3, the secretariat of which
is held by SA and is based on ISO 7240-28:2008.
Fire protection control equipment (FPCE) (ISO 7240-1:2014, Figure 1, item G) receives signals from
control and indicating equipment (ISO 7240-1:2014, Figure 1, item B) and sends initiating signals to
automatic fire protection equipment (AFPE) (ISO 7240-1:2014, Figure 1, item H). The initiating signals
are used to operate AFPE, 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 on all FPCE 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 FPCE
covered by this part of ISO 7240, with different combinations of functions, to conform to the specified
requirements. It is necessary that FPCE 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 2014 – All rights reserved

INTERNATIONAL STANDARD ISO 7240-28:2014(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 (FPCE) (ISO 7240-1:2014, Figure 1, item G) connected to automatic fire
protection equipment (AFPE) (ISO 7240-1:2014, Figure 1, item H) installed in buildings.
The FPCE receives signals from fire detection control and indicating equipment (ISO 7240-1:2014,
Figure 1, item B), sends control signals to, and indicates the condition of, the AFPE (see Figure 1). 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.

G
H
G
CC
Pump
start
CC
Pump Smoke Fire
start control doors
Smoke
control
CC
Fire
doors
CC
a) FPCE with discrete transmission paths b) FPCE with serial transmission path
Key
G fire protection control equipment
H automatic fire protection equipment
1 automatic control
indicator
manual control
Figure 1 — Typical fire protection control equipment configuration
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. 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 7240-2, 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, Degrees of protection provided by enclosures (IP Code)
IEC 60721-3-3, Classification of environmental conditions — Part 3-3: Classification of groups of
environmental parameters and their severities — Stationary use at weatherprotected locations
EN 50130-4, Alarm systems — Part 4: Electromagnetic compatibility — Product family standard: Immunity
requirements for components of fire, intruder, hold up, CCTV, access control 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
functional condition
condition of the FPCE characterized by its indication at the FPCE
Note 1 to entry: The functional conditions recognized in this part of ISO 7240 are the following:

—  quiescent condition, specified in 4.2;

—  fire protection condition, specified 4.3;

—  fault warning condition, specified in 4.4;

—  disabled condition, specified in 4.5;

—  test condition, specified 4.6.
2 © ISO 2014 – All rights reserved

3.2 Abbreviated terms
AFPE automatic fire protection equipment
FPCE fire protection control equipment
4 Requirements
4.1 General
4.1.1 The FPCE shall be capable of unambiguously controlling and indicating the following functional
conditions, as described in 4.2 to 4.6:
— quiescent condition;
— fire protection condition;
— fault warning condition;
— disabled condition;
— test condition.
4.1.2 The FPCE shall be capable of functioning simultaneously in any combination of the following
functional conditions:
— fire protection condition;
— fault warning condition;
— disabled condition;
— test condition.
4.1.3 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.
4.1.4 If an optional function is included in the FPCE, then all the corresponding requirements shall be
met.
4.1.5 Functions required in this part of ISO 7240 can be performed within fire detection control and
indicating equipment complying with ISO 7240-2.
4.2 Quiescent condition
The FPCE shall be in the quiescent condition when the FPCE is powered, and no other functional condition
is indicated. Any kind of system information can 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, or
— test condition.
4.3 Fire protection condition
4.3.1 Reception and processing of fire protection condition signals
4.3.1.1 The FPCE shall receive fire alarm condition signals from fire detection control and indicating
equipment (ISO 7240-1:2014, Figure 1, item B), and within 3 s, send signals as configured to initiate
AFPE.
4.3.1.2 Fire alarm condition signals shall be latched by the FPCE until reset.
4.3.1.3 FPCE output signals shall be activated as part of the fire protection condition.
4.3.1.4 FPCE output signals shall be configurable at access level 3. The configuration, at least, shall be
dependent upon the fire alarm condition signals received from the fire detection control and indicating
equipment, and shall allow for adaptations that can be required as part of the design of the fire detection
and alarm system installed in or around the building.
4.3.1.5 The mandatory indications and/or outputs shall not be falsified by multiple fire signals
received from the same or different fire detection control and indicating equipment, resulting from
the simultaneous operation of two sets of fire detection control and indicating equipment, and/or the
operation of additional sets of fire detection control and indicating equipment.
4.3.2 Indication of the fire protection condition
4.3.2.1 Indication of the fire protection condition is established when 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 of the FPCE output activation, as specified in 4.3.3, which can be omitted for
FPCE and capable of sending signals to only one AFPE;
c) an audible indication, as specified in 4.10.
4.3.2.2 The time taken for processing signals within the FPCE shall not delay the indication of the fire
protection condition at the FPCE by more than 3 s.
4.3.2.3 The display of the fire protection condition shall take priority over the display of other conditions.
4.3.3 Automatic fire protection equipment
4.3.3.1 Activation by fire protection control equipment
4.3.3.1.1 Activation of the FPCE output shall be indicated by means of a separate light-emitting indicator,
or a field of an alphanumeric display, or both, for each FPCE output.
4.3.3.1.2 Where an alphanumeric display is used and separate light-emitting indicators for each FPCE
output are not provided, a separate light-emitting indicator (the general output indicator) is also required.
4.3.3.1.3 The output indicators shall be separate and distinct from the fire protection condition
indicator.
4.3.3.1.4 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:
4 © ISO 2014 – All rights reserved

a) The total number of FPCE outputs activated shall be displayed until the FPCE has been reset.
b) Activated FPCE 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.
4.3.3.1.5 The FPCE output indicator shall flash when the FPCE output is activated and go steady when
the FPCE receives acknowledgement from the AFPE.
NOTE 1 The criteria used for the acknowledgement signal are dependent on the AFPE. 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 AFPE remains unclear.
4.3.3.2 Activation by means other than by the fire protection control equipment
4.3.3.2.1 Activation of the AFPE by means other than the FPCE (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 FPCE output. The indicators can be the same as those used in 4.3.3.1.
4.3.3.2.2 When the AFPE is activated by means other than by the FPCE, the FPCE output visual indicator
shall go steady and the audible indication, as specified in 4.10, shall activate.
NOTE If the AFPE is activated by means other than the FPCE, the activation is not considered as a fire
protection condition; therefore, the reset function of 4.3.4.4 does not apply.
4.3.3.2.3 The audible indication shall not be silenced automatically.
4.3.3.2.4 If previously silenced, the audible indication shall re-sound for each new FPCE output
activation.
4.3.4 Manual controls
4.3.4.1 General
4.3.4.1.1 Manual controls shall be available at access level 2 to activate and deactivate the outputs of
the FPCE.
4.3.4.1.2 The time taken for processing manual control signals within the FPCE shall not delay the
output activation at the FPCE by more than 3 s. Where more than one output is activated by a single
manual control, the activation of each subsequent output can be delayed by not more than 3 s per output.
4.3.4.1.3 When operated, a manual control shall suspend the programmed operation of the associated
FPCE output. When the manual control is no longer in use, the programmed operation of the FPCE output
shall resume from the point of suspension.
NOTE The resumption of programmed operation might need to include a re-examination of any active FPCE
input signals.
4.3.4.2 Indication of the activation of a manual control
4.3.4.2.1 Activation of the manual control shall be indicated by means of a separate light-emitting
indicator, or an alphanumeric display, or both, for each FPCE output. The indicator shall be cancelled
when the manual control is deactivated.
4.3.4.2.2 The activation of the manual control shall be indicated within 2 s of the completion of the
manual operation.
4.3.4.3 Other indications
If fault warning conditions, disabled 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
be possible to reveal these by means of a manual operation at access level 1 or access level 2.
4.3.4.4 Reset
4.3.4.4.1 A manual control shall be provided to reset the FPCE from the fire protection condition at
access level 2.
4.3.4.4.2 Indications of the fire protection condition shall be reset manually (see 4.3.4.4.1) and can
be reset automatically when the fire alarm condition is reset at the fire detection control and indicating
equipment.
4.3.4.4.3 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.
4.4 Fault warning condition
4.4.1 Reception and processing of fault warning signals
4.4.1.1 The FPCE shall enter the fault warning condition when signals are received that, after necessary
processing, are interpreted as fault.
4.4.1.2 The FPCE shall be capable of simultaneously recognizing all of the faults specified in 4.4.3.1 and
4.4.3.4, 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.
4.4.1.3 Faults specified in 4.4.3.1 and 4.4.3.4 shall be indicated without prior manual intervention,
unless the FPCE is in the fire protection condition, in which case, the fault indications can be suppressed.
4.4.2 Indication of the fault warning condition
4.4.2.1 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 4.4.3.1;
6 © ISO 2014 – All rights reserved

c) an audible indication, as specified in 4.10.
4.4.2.2 Faults shall be indicated within 100 s of the occurrence of the fault or as specified in 4.15.6.
4.4.3 Indication of specific faults
4.4.3.1 The following faults shall be indicated by means of a separate light-emitting indicator, or an
alphanumeric display, or both, and can be suppressed during the fire protection condition.
a) an indication when the transmission of signals from fire detection 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 AFPE 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 AFPE 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 7240-1:2014, Figure 1, item L), where
the power supply is contained in a cabinet different from that of the FPCE (indication can 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 FPCE 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;
g) an indication of a software system fault in accordance with 4.15.4.1.
4.4.3.2 If indication is by means of separate light-emitting indicators, the same light-emitting indicator
can be used as that for the indication of the corresponding disable condition or test condition, although
the indication shall be distinguishable.
4.4.3.3 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.
4.4.3.4 Any short circuit or interruption in a transmission path between parts of the FPCE 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.
4.4.4 Fault warning indications during the fire protection condition
4.4.4.1 The audible indication for the fault warning condition can be the same as that for the fire
protection condition. If they are different, the fire protection condition indication shall have priority.
4.4.4.2 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.
4.4.5 Audible indication re-sound
If previously silenced, the audible indication shall re-sound for each newly recognized fault.
4.4.6 Reset from the fault warning condition
Indications of faults shall be capable of being reset automatically when the faults are no longer recognized.
4.5 Disabled condition — Optional function
4.5.1 General
4.5.1.1 The FPCE can have a provision to independently disable and re-enable each input and each
output by means of manual operations at access level 2.
4.5.1.2 Disablement shall inhibit all corresponding mandatory indications and/or outputs, but shall
not prevent other mandatory indications and/or outputs.
4.5.1.3 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.
4.5.2 Indication of the disabled condition
4.5.2.1 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 4.5.1.1.
4.5.2.2 Disablement shall be indicated within 2 s of the completion of the manual operation.
4.5.3 Indications of specific disablement
4.5.3.1 If the indication of a specific disablement, as specified in 4.5.1.1, is by means of separate
light-emitting indicators, the same light-emitting indicator can be used as that for the indication of the
corresponding fault or test, although the indication shall be distinguishable.
4.5.3.2 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 2014 – All rights reserved

4.6 Test condition — Optional function
4.6.1 General
4.6.1.1 The FPCE can have a provision for testing the processing and indication of fire alarm signals
from fire detection control and indicating equipment. This can 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.
4.6.1.2 The test condition shall not be affected by a reset from the fire protection condition, the disabled
condition, or the fault warning condition.
4.6.2 Indication of the test condition
4.6.2.1 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 4.6.1.1.
4.6.2.2 Tests shall be indicated within 2 s of the completion of the manual operation.
4.6.2.3 The indications of each function in the test can be suppressed during the fire protection
condition but the general test indicator shall not be suppressed.
4.6.3 Indication of specific tests
4.6.3.1 If indication of a specific test, as specified in 4.6.1.1, is by means of separate light-emitting
indicators, the same light-emitting indicator can be used as that for the indication of the corresponding
fault or disable, although the indication shall be distinguishable.
4.6.3.2 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.
4.7 Functional condition recorder — Optional function
The FPCE can 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 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 FPCE.
4.8 Accessibility of indications and controls
4.8.1 Four access levels shall be provided on the FPCE, 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.
4.8.2 All mandatory indications shall be visible at access level 1 without prior manual intervention (e.g.
the need to open a door).
4.8.3 Manual controls at access level 1 shall be accessible without special procedures.
4.8.4 Indications and manual controls that are mandatory at access level 1 shall also be accessible at
access level 2.
4.8.5 The entry to access level 2 shall be restricted by a special procedure.
4.8.6 The entry to access level 3 shall be restricted by a special procedure, differing from that for access
level 2.
4.8.7 The entry to access level 4 shall be restricted by special means that are not part of the FPCE.
4.9 Visual indications
4.9.1 General
All mandatory indications shall be clearly identifiable, except where otherwise specified in this part of
ISO 7240.
4.9.2 Indications by means of light emitting indicators
4.9.2.1 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, and
— at 0,8 m distance for other indications.
4.9.2.2 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, and
— 0,2 Hz for fault warning indications.
4.9.3 Indications on alphanumeric displays
4.9.3.1 If an alphanumeric display consists of elements or segments, the failure of one of these shall not
affect the interpretation of the displayed information.
10 © ISO 2014 – All rights reserved

4.9.3.2 Where the FPCE is integrated with fire detection control and indicating equipment, a separate
window shall be used for the FPCE. Alphanumeric displays used for mandatory indications shall have at
least one clearly distinguishable window, consisting of at least two clearly identifiable fields.
4.9.3.3 If not included in the displayed information, the purpose of each field shall be clearly labelled.
4.9.3.4 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, and
— 15° when viewed from above and below.
4.9.3.5 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.
4.9.4 Colours of indications
4.9.4.1 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, and
— test state;
c) green for the indication that the FPCE is supplied with power.
4.9.4.2 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 4.9.4.1.
4.9.5 Testing of visual indicators
All mandatory visual indicators shall be testable by a manual operation at access level 1 or level 2.
4.10 Audible indications
4.10.1 Audible indicators shall be part of the FPCE. The same device can be used for both fire protection
condition and fault warning condition indications.
4.10.2 The audible indication shall be capable of being silenced by means of a separate manual control
at access level 1 or 2.
4.10.3 The minimum sound level at a distance of 1 m with any access door on the FPCE 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 FPCE being installed in areas that are
normally occupied (such as a security room).
4.10.4 The sound level shall be measured in anechoic conditions.
4.10.5 Audible indicators shall be testable by a manual operation at access level 1 or access level 2. The
control can be the same as that required in 4.9.5.
4.11 Additional indications
Where indications are used in addition to mandatory indications, these shall not result in contradiction
or confusion.
4.12 Power supply
4.12.1 The power supply for the FPCE shall comply with the requirements of ISO 7240-4. Where the FPCE
is included within the fire detection control and indicating equipment cabinet, both sets of equipment can
share the same power supply.
4.12.2 A visible indication shall be given by means of a separate light-emitting indicator while the FPCE
is supplied with power. Where the FPCE is integrated with the fire detection control and indicating
equipment, a single power-supply indication can be used for both sets of equipment.
4.12.3 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.
4.12.4 If the FPCE has provision for disconnecting or adjusting the main or the standby power source,
this shall be possible only at access level 3.
4.13 Mechanical
4.13.1 The cabinet of the FPCE 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.
4.13.2 The FPCE can be housed in more than one cabinet. In this case, the related indicators for the
controls shall be grouped together in the same cabinet.
4.13.3 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.
4.13.4 The terminations for transmission paths and the fuses shall be clearly labelled.
4.14 Integrity of transmission paths
4.14.1 A fault in any transmission path between the FPCE and other components of the fire-detection
system (as defined in ISO 7240-1) shall not affect the correct function of the FPCE or of any other required
transmission path.
4.14.2 If the manufacturer’s documentation shows that an FPCE contained in more than one cabinet can
be installed in separate locations (e.g. signal concentrator equipment), then the means shall be specified
12 © ISO 2014 – All rights reserved

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 20 s following the occurrence of the fault.
4.14.3 Where the FPCE is designed for use with a power supply (ISO 7240-1:2014, Figure 1, item L)
contained in a separate cabinet remote from the FPCE, 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 FPCE.
4.15 Software
4.15.1 General
The FPCE can contain elements that are controlled by software in order to fulfil requirements of this
part of ISO 7240.
4.15.2 Software d
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