CLC/TS 50131-7:2003
(Main)Alarm systems - Intrusion systems - Part 7: Application guidelines
Alarm systems - Intrusion systems - Part 7: Application guidelines
Superseded by CLC/TS 50131-7:2008
Alarmanlagen - Einbruchmeldeanlagen - Teil 7: Anwendungsregeln
Systèmes d'alarme - Systèmes d'alarme intrusion - Partie 7: Guide d'application
Alarm systems - Intrusion systems -- Part 7: Application guidelines
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2004
Alarm systems - Intrusion systems -- Part 7: Application guidelines
Alarm systems - Intrusion systems -- Part 7: Application guidelines
Alarmanlagen - Einbruchmeldeanlagen -- Teil 7: Anwendungsregeln
Systèmes d'alarme - Systèmes d'alarme intrusion -- Partie 7: Guide d'application
Ta slovenski standard je istoveten z: CLC/TS 50131-7:2003
ICS:
13.310 Varstvo pred kriminalom Protection against crime
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
TECHNICAL SPECIFICATION CLC/TS 50131-7
SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION July 2003
ICS 13.310
English version
Alarm systems –
Intrusion systems
Part 7: Application guidelines
Systèmes d’alarme– Alarmanlagen –
Systèmes d’alarme intrusion Einbruchmeldeanlagen
Partie 7: Guide d’application Teil 7: Anwendungsregeln
This Technical Specification was approved by CENELEC on 2003-06-04.
CENELEC members are required to announce the existence of this TS in the same way as for an EN and
to make the TS available promptly at national level in an appropriate form. It is permissible to keep
conflicting national standards in force.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. CLC/TS 50131-7:2003 E
Foreword
The text of this Technical Specification was prepared by the Technical Committee CENELEC TC 79,
Alarm systems.
The text of the draft was submitted to the questionnaire and vote procedure and was approved by
CENELEC as CLC/TS 50131-7 on 2003-06-04.
The following date was fixed:
– latest date by which the existence of the CLC/TS
has to be announced at national level (doa) 2003-10-30
__________
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Contents
Introduction. 5
1 Scope. 7
2 Normative references. 7
3 Definitions and Abbreviations . 7
3.1 Definitions. 7
3.2 Abbreviations. 11
4 Grade of IAS . 11
4.1 Grading Structure. 12
4.1.1 Grade 1: Low risk. 12
4.1.2 Grade 2: Low to medium risk. 12
4.1.3 Grade 3: Medium to high risk . 12
4.1.4 Grade 4: High risk. 12
5 Environmental classification. 12
6 General. 13
6.1 Other components.13
6.2 Safety. 13
6.3 Unwanted alarms.13
6.4 Responsibility . 13
6.5 Qualifications . 13
6.6 Confidentiality . 13
6.7 Consultation. 13
6.8 Compatibility . 14
7 System Design. 14
7.1 Location survey — Risk. 14
7.1.1 Contents.14
7.1.2 Building.14
7.1.3 Minimum supervision levels. 14
7.2 Location Survey — Other influences. 14
7.3 System design Proposal. 15
7.3.1 Selection of components . 15
7.3.2 Siting of equipment. 15
7.3.3 Interconnections.16
7.3.4 Setting and unsetting. 17
7.3.5 Entry and exit routes. 18
7.3.6 Indication.18
7.3.7 Grouping of detectors . 18
7.3.8 Notification.18
7.3.9 Power.19
7.3.10 Response to IAS.19
8 Installation Planning. 19
8.1 General. 19
8.1.1 Manufacturer’s recommendations . 19
8.1.2 Environmental considerations . 19
8.1.3 Technical survey.19
8.1.4 Installation Plan and Equipment Schedule. 20
9 System installation. 21
9.1 Competence. 21
9.2 Installation process. 21
10 Inspection, functional testing and commissioning . 21
10.1 Inspection. 21
10.2 Functional testing. 21
10.3 Commissioning . 21
10.4 Handover. 21
10.5 Test period. 22
10.6 Acceptance. 22
10.7 As Fitted document. 22
10.8 Certificate of conformance. 22
11 Documentation and records. 23
11.1 Documentation. 23
11.2 Records. 24
12 Operation of IAS . 24
13 Maintenance and repair of the IAS . 24
13.1 General. 24
13.2 Inspection and servicing. 25
13.2.1 Maintenance routine.25
13.2.2 Prevention of unwanted alarms during routine testing . 25
13.3 Repair. 25
13.4 Spares. 25
Annex A (informative) System design — Location survey — Contents . 26
Annex B (informative) Systems design — Location survey — Building . 27
Annex C (informative) Location survey — Influences affecting the IAS originating
within the supervised premises. 29
Annex D (informative) Location survey — Influences affecting the IAS originating
outside the supervised premises . 32
Annex E (informative) Levels of supervision . 34
Annex F (normative) Information to be included in the system design proposal. 35
Annex G (informative) Technical survey . 37
Annex H (informative) Log book . 48
Annex I (informative) Maintenance. 49
Annex J (informative) Flow chart. 50
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Introduction
These application guidelines are intended to provide advice relating to the design, installation, operation
and maintenance of Intruder Alarm Systems (IAS). The purpose of this document is to ensure, as far as is
practical, that IAS provide the required performance with a minimum of unwanted alarms.
NOTE Clause 12 includes requirements relating to the operation of IAS.
These application guidelines are set out in the logical order in which an IAS would normally be designed
and installed. Each procedure is set out separately in the guideline but it is accepted that, in practice,
some of the procedures may be carried out simultaneously. Annex J describes in the form of a flowchart
the main processes and documentation included in this application guideline.
Those responsible for the design, installation, operation and maintenance of IAS should be conversant
with other European Specifications relating to IAS, particularly those relating to system performance,
control and indicating equipment, detectors, warning devices, power supplies and alarm transmission
systems.
These application guidelines are set out in seven main clauses; a brief explanation of each section is
shown below:
• Clause 7 - System design
This clause is intended to assist those responsible for designing IAS to design IAS suitable for the
premises to be supervised in relation to the perceived risk(s). The design of the IAS will depend on
many factors all of which will influence the design of the IAS to a greater or lesser degree.
Consideration of these factors will result in a system design proposal for an IAS with the appropriate
extent, security grade and environmental class.
• Clause 8 - Installation planning
This clause is intended to help those responsible for installing the IAS by highlighting issues which
should be considered prior to commencing the installation of the IAS.
• Clause 9 - System installation
In this clause guidance is given with regard to issues arising during the installation of the IAS. This
clause is intended to ensure the IAS is correctly installed as specified at the design stage.
• Clause 10 - Inspection, test, commissioning and acceptance
In this clause guidance is given on issues arising after the IAS has been installed. The clause is
intended to ensure the IAS has been installed as specified and also provides the level of performance
intended at the design stage. Guidance is also provided with regard to the proper commissioning and
handing over of the system to the user and to the documents, records and operating instructions
which should be provided.
• Clause 11 - Documentation and records
This clause describes the documentation which should be provided to the client on completion of the
IAS. The documents are intended to provide a history of modifications to the IAS, based on the As
Fitted document, prepared when the IAS installation was completed.
The records are intended to chronicle any corrective action carried out following unwanted alarm
conditions and details of any repairs or modifications to the IAS. The record should also include
details of temporary disconnections.
• Clause 12 Operation
This clause describes the responsibility of the client or user of the IAS to properly maintain the IAS
and to ensure it is operated correctly.
• Clause 13 - Maintenance and repair
This clause describes how the IAS should be maintained and repaired to ensure the IAS continues to
provide the level of performance intended at the design stage.
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1 Scope
These application guidelines include guidance on the design, planning, operation, installation,
commissioning and maintenance of IAS installed in buildings. Requirements for IAS are specified in
EN 50131-1.
These application guidelines are intended to assist those responsible for establishing the need for an IAS
to ascertain the appropriate design of the IAS both in terms of the extent of the supervision required and
in determining the grade of system performance necessary to provide the degree of supervision
considered appropriate.
These application guidelines are also intended to assist those responsible for selecting equipment
appropriate to both the level of performance required and the environmental conditions in which the
equipment will be required to operate.
These application guidelines are relevant to all classes and grades of IAS of any size and complexity.
This application guideline should be read in conjunction with EN 50131-1.
NOTE It has been assumed in the drafting of these application guidelines that the execution of its provisions will be
entrusted to appropriately qualified and experienced persons. However the guidance is also appropriate to other
persons who may be required to purchase or use an IAS.
2 Normative references
This Technical Specification incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of
these publications apply to this Technical Specification only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies.
EN 50131-1:1997, Alarm systems, Intrusion systems — Part 1: General requirements
EN 50014:1997, Electrical apparatus for Potentially explosive atmospheres General requirements
3 Definitions and abbreviations
For the purpose of this Technical Specification the following definitions and abbreviations apply.
3.1 Definitions
3.1.1
active detector
detector capable of comparing input signals with pre-defined criteria
(speed/frequency/amplitude/direction) prior to generating an alarm signal or message
3.1.2
alarm
warning of the presence of a hazard to life, property or the environment
3.1.3
alarm receiving centre
continuously manned centre to which information concerning the status of one or more alarm systems is
reported
3.1.4
alarm company
organization which provides services for alarm systems
3.1.5
alarm condition
condition of an alarm system or part thereof, which results from the response of the system to the
presence of a hazard
3.1.6
alarm system
electrical installation which responds to the manual or automatic detection of the presence of a hazard
3.1.7
alarm transmission system
equipment and network used to transfer information concerned with the state of one or more alarm
systems to one or more alarm receiving centre
NOTE Transmission systems exclude local direct connections, i.e. interconnections between parts of an alarm
system which do not require an interface to transform the alarm system information into a form suitable for
transmission.
3.1.8
ancillary control equipment
equipment used for supplementary control purposes
3.1.9
as fitted document
document in which details of the IAS actually installed are recorded
3.1.10
control and indicating equipment
equipment for receiving, processing, controlling, indicating and initiating, the onward transmission of
information
3.1.11
commissioning
putting an IAS into operational mode
3.1.12
client
individual or corporate body responsible for acquiring the IAS
3.1.13
detector
device designed to generate an intruder alarm signal or message in response to the sensing of an
abnormal condition indicating the presence of a hazard
3.1.14
documentation
paperwork (or other media) prepared during the design, installation, commissioning and hand over of the
IAS recording details of the IAS
3.1.15
entry/exit route
route by which authorized entry or exit to the supervised area may be achieved
3.1.16
equipment schedule
list of equipment to be installed or actually installed
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3.1.17
fault condition
condition of an alarm system which prevents the IAS or parts thereof from functioning normally
3.1.18
final exit point
point at which the user enters or leaves the supervised premises
EXAMPLE: entrance door to supervised premises.
3.1.19
installation company
company responsible for installing the IAS
3.1.20
installation plan
document describing the methodology to be followed during the installation of the IAS
3.1.21
installer
individual or individuals responsible for carrying out the installation process
3.1.22
intruder alarm system
alarm system to detect and indicate the presence, entry or attempted entry of an intruder into supervised
premises
3.1.23
interconnection
means by which messages and/or signals are transmitted between IAS components
3.1.24
isolation
status of a part of an alarm system in which an alarm condition cannot be notified, such status remaining
until deliberately cancelled
3.1.25
non-active detector
detector which does not include any electronic components
EXAMPLE: a mechanical switch or contact.
3.1.26
non-specific wired interconnection
interconnection conveying information pertaining to two or more applications
3.1.27
normal condition
state of an IAS system where no conditions exist which would prevent the setting of the IAS
3.1.28
notification
passing of an alarm, tamper or fault condition to warning devices and/or alarm transmission systems
3.1.29
operational mode
state of an alarm when it is complete, commissioned and ready for use
3.1.30
power supply
that part of an alarm system which provides power for the IAS or any part thereof
3.1.31
response authority
designated authority with responsibility for attending the supervised premises following an alarm and
taking the appropriate action
3.1.32
set
status of an IAS or part thereof in which an alarm condition can be notified
3.1.33
specific wired interconnection
interconnection conveying information pertaining to one application
3.1.34
specifier
individual or corporate body responsible for stipulating the requirements the IAS will be required to meet
3.1.35
subsystem
that part of an IAS located in a clearly defined part of the supervised premises capable of independent
operation
3.1.36
supervised premises
that part of a building and/or area in which a hazard may be detected by an alarm system
3.1.37
system components
individual items of equipment which make an IAS when configured together
3.1.38
system record
history of alarm conditions, faults or modifications to the IAS
EXAMPLE: a Log Book.
3.1.39
tamper
deliberate interference with an IAS or part thereof
3.1.40
tamper alarm
alarm generated by tamper detection
3.1.41
tamper condition
condition of an alarm system in which tampering has been detected
3.1.42
tamper protection
methods or means used to protect an alarm system or part thereof against deliberate interference
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3.1.43
technical survey
inspection of the premises to be supervised, carried out after the proposal has been accepted, to verify
the selection, location and siting of system components and to consider the selection of components in
relation to the environmental conditions to which the system components will be exposed
3.1.44
unset
status of an IAS or part thereof in which an alarm condition cannot be notified
3.1.45
user
person authorized to operate an alarm system
3.1.46
unknown alarm
alarm for which the cause cannot be positively identified
3.1.47
unwanted alarm
alarm conditions not generated by an intrusion or attempted intrusion into the supervised premises
3.1.48
warning device
device that gives an alarm or an alert
3.1.49
wire-free interconnection
interconnection conveying information between IAS components without physical media. The
interconnection may convey information pertaining to two or more applications
3.1.50
zone
assessed area where abnormal conditions may be detected
3.2 Abbreviations
In this Application Guideline the following abbreviations are used:
ARC — Alarm Receiving Centre
ACE — Ancillary Control Equipment
ATE — Alarm Transmission Equipment
ATS — Alarm Transmission System
CIE — Control and Indicating Equipment
IAS — Intruder Alarm System(s)
PS — Power Supply
WD — Warning Device
PIR — Passive Infra-Red
4 Grade of IAS
The grade of the IAS will depend upon the performance required as determined during the risk
assessment and location survey.
An IAS may include IAS components of differing grades when divided into clearly defined sub-systems.
When the IAS is divided into sub-systems, each sub-system may be of a different grade. The grade of a
sub-system shall be that of the lowest graded component within it.
Components shared by more than one sub-system should have a grade equal to that of the highest sub-
system grade.
EXAMPLE: control and indicating equipment, alarm transmission system, warning devices and power
supplies.
4.1 Grading structure
EN 50131-1 describes four grades of performance which should be considered when selecting
equipment. These are as follows:
4.1.1 Grade 1: Low risk
Intruders are expected to have little knowledge of IAS and be restricted to a limited range of easily
available tools.
4.1.2 Grade 2: Low to medium risk
Intruders are expected to have a limited knowledge of IAS and the use of a general range of tools and
portable instruments.
EXAMPLE: a multi-meter.
4.1.3 Grade 3: Medium to high risk
Intruders are expected to be conversant with IAS and have a comprehensive range of tools and portable
electronic equipment.
4.1.4 Grade 4: High risk
To be used when security takes precedence over all other factors. Intruders are expected to have the
ability or resource to plan an intrusion in detail and have a full range of equipment, including means of
substitution of vital components in the IAS.
5 Environmental classification
The environmental class of each system component should be determined by the environmental
conditions in which the component is expected to operate.
EN 50131-1 defines four environmental classes as shown below:
I) indoor but restricted to residential/office environment;
EXAMPLE: living rooms and offices.
II) indoor in general;
EXAMPLE: sales floors, shops, restaurants, stairways, manufacturing and assembly areas and
storage rooms.
III) outdoor but sheltered from direct rain and sunshine, or indoors with extreme environmental
conditions;
EXAMPLE: garages lofts, barns and loading bays.
IV) outdoor in general
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6 General
The IAS should be installed, operated (see Clause 12) and maintained in a manner consistent with the
manufacturers recommendations for the equipment and the environmental conditions under which the
IAS is expected to operate.
6.1 Other components
Components of other systems may be combined or integrated with the IAS providing the performance of
the IAS components are not adversely influenced.
6.2 Safety
National or European requirements relating to safety may exist. Such requirements are not included in
these application guidelines and reference should be made directly to the relevant National or European
documents.
EXAMPLE: electrical safety.
6.3 Unwanted alarms
It is recommended that care should be taken by system designers, installation companies, alarm
companies and users, to avoid unwanted alarms.
6.4 Responsibility
Responsibility for each individual stage in the process of supplying an IAS; design, installation,
commissioning and hand-over should be clearly defined and agreed between the relevant parties.
6.5 Qualifications
Persons responsible for risk assessment and the design, installation, maintenance and repair of IAS
should hold appropriate qualifications.
NOTE These qualifications required may vary from country to country.
6.6 Confidentiality
Information relating to the design, installation, operation and maintenance of the IAS should be treated as
confidential.
6.7 Consultation
The design of a system should be determined in consultation with the client or specifier of the IAS (or
his/her representative) and any other interested parties.
EXAMPLE: insurers or police.
When considered necessary, expert advice should be obtained.
The designer of the IAS should consider any requirements for third party approval of the whole IAS or a
particular system component. Any such requirements should be identified at an early stage in the design
of the IAS and the selection of system components.
6.8 Compatibility
Care should be taken during the selection of components to ensure all system components are
compatible. Where any uncertainty arises the appropriate consultation should take place.
EXAMPLE: with the manufacturer/supplier, a test house or other third party.
7 System design
The objectives of the system design stage are to determine the extent of the IAS and select components
of the appropriate grade and environmental classification and to prepare a system design proposal.
EXAMPLE: the number and type of detectors and their location.
7.1 Location survey — Risk
An assessment should be carried out at the premises to be supervised to determine the required grade of
the IAS.
7.1.1 Contents
The contents at risk within the supervised premises should be considered when determining the design of
the IAS. Annex A includes a list of examples of factors which should be considered. The list should not be
regarded as definitive as other factors may be relevant in specific circumstances.
7.1.2 Building
Among other factors, the construction, location, type of occupancy and theft history of the supervised
premises should be considered when designing an IAS. Annex B includes a list of examples of factors
which should be considered, the list should not be regarded as definitive as others factors may be
relevant in specific circumstances.
7.1.3 Minimum supervision levels
The level of supervision required will be influenced by the factors described in annexes A and B. Based
on the assessment of these, the specifier should assess the method of intrusion which may be expected
at different points throughout the premises and select the grade of the IAS and design the IAS
accordingly. Examples of the methods of intrusion against which supervision is likely to be required is
shown, by grade, in Annex E.
7.2 Location survey — Other influences
The existing and/or potential conditions at the premises to be supervised should be considered in the
design of the IAS. Conditions which may influence the operation of the IAS fall into two categories:
• those conditions occurring within the supervised premises over which the user of the IAS may be
reasonably expected to exercise control. Annex C includes a list of examples of factors which should
be considered, the list should not be regarded as definitive as others factors may be relevant in
specific circumstances;
• those conditions occurring outside the supervised premises over which the user cannot reasonably
be expected to exercise control. Annex D includes a list of examples of factors which should be
considered, the list should not be regarded as definitive as other factors may be relevant in specific
circumstances.
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NOTE The location survey is intended to identify, during the preparation of the system design proposal, factors
which may influence the selection and siting of system components, particularly detectors. Additional factors may be
identified during the technical survey (see 8.1.3) which may result in amendments to the system design proposal.
7.3 System design proposal
A system design proposal should be prepared for submission to the client or an agent appointed by the
client. The proposal should include the information detailed in Annex F.
The system design proposal may be subject to alteration at other stages in the implementation of the
system.
EXAMPLE: during the installation planning and installation implementation stages.
Any such changes should be agreed between the relevant parties and the documentation amended
accordingly.
7.3.1 Selection of components
Only components meeting the appropriate security grade and environmental class should be selected.
Due regard should be taken of the need to minimize the generation of unwanted alarms.
7.3.2 Siting of equipment
7.3.2.1 Siting of CIE
CIE should be sited within the supervised area. Where an IAS is divided into sub-systems of different
grades the CIE should be within the area supervised by the sub-system with the highest grade. In grade 3
and 4 IAS setting any sub-system(s) should also set the sub-system supervising the area in which the
CIE is located.
Examples of issues to be considered when siting CIE and ACE are shown in Clauses G.20 and G.21.
When unsetting is to be initiated outside the supervised area and completed inside the supervised area
consideration should be given to siting the CIE or ACE adjacent to the final exit point of the supervised
area, to limit the route from the point of entry to the CIE or ACE. Care should be taken to site the CIE or
ACE so as to prevent observation of the operation of the CIE or ACE by unauthorized persons.
7.3.2.2 Siting of ATE
ATE should be sited within the supervised area. Where an IAS is divided into sub-systems of different
grades the ATE should be within the area supervised by the sub-system with the highest grade.
Examples of issues to be considered when siting ATE are shown in Clause G.23.
7.3.2.3 Siting of detectors
Detectors should be sited in compliance with the manufacturer’s recommendations and to provide the
range and coverage determined during the risk assessment stage of the IAS design. Examples of issues
to be considered when siting detectors are shown in Annex G.
7.3.2.4 Siting of Warning Devices
WD should be located in positions which are not readily accessible (so as to minimize risk of intentional or
unintentional damage) consistent with reasonable access for servicing and so as to give effective
notification of alarms.
WD should be so mounted as to minimize the possibility of removal without generating an alarm
condition.
Interconnections to externally mounted WD, which are accessible from outside the supervised area,
should be provided with tamper protection.
EXAMPLE: enclosed in metal conduit.
7.3.3 Interconnections
Interconnections appropriate to the system performance required and the environmental conditions
should be selected.
Where wired interconnections are used consideration should be given to the relevant electrical installation
specifications and to equipment manufacturers recommendations.
7.3.3.1 Specific wired interconnections
When specific wired interconnections are selected these should be run inside the supervised premises.
When it is impractical for interconnections to be routed inside the supervised area they should be
provided with tamper protection.
EXAMPLE: enclosed in metal conduit.
The size and material of cables used for wired interconnections and its insulation should be such that the
voltage delivered to any systems component is not less than the minimum specified operating voltage,
when measured in the maximum current condition, with the minimum power supply voltage.
All cables used for interconnections should be adequately supported and its installation should conform to
good working practices.
When cables may be subjected to accidental damage; they should be mechanically protected.
EXAMPLE: below 2 metres above floor level.
Cables should be run in positions where there is the least risk of physical damage. If risk of physical
damage exists the cable should be protected by ducting, trunking or conduit. When these are made of
conductive material due regard should be paid to their proper earthing and correct grounding.
Electrical interference may cause unwanted alarms. This should generally be overcome by filtering the
mains input to the IAS, separating interconnecting cables from high voltage cables and by screening.
Interconnection wiring should not be run in the same conduit or trunking as cables carrying high voltage.
EXAMPLE: mains supplies, or cables carrying high frequency signals unless they are physically
separated and/or suitably screened so as to prevent cross interference.
All joints in interconnection wiring should be mechanically and electrically secure.
To facilitate rapid tracing of faults in interconnecting wiring all cables should be identifiable at their ends.
Sufficient test points, contained in junction boxes, should be provided for efficient fault identification.
EXAMPLE: colour coded insulation; labelled.
Care should be taken with regard to the size and type of cable selected, its routing and fixing. Examples
of issues to be considered when specifying specific wired interconnections are included in G.1.1.
7.3.3.2 Non-specific wired interconnections
When non-specific wired interconnections are selected, in addition to the requirements included in 7.3.3.1
above, consideration should be given to the effect other systems sharing the interconnections may have
on the performance of the IAS. This issue may be particularly relevant should the other system(s) develop
a fault. Examples of issues to be considered when specifying non-specific wired interconnections are
included in G.1.2.
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7.3.3.3 Wireless interconnections
When wireless interconnections are selected careful consideration should be given to the influence of
intentional or unintentional transmissions using the same frequency and/or means of signal modulation as
those of the IAS. Such transmissions may result in the IAS generating tamper or fault conditions or
prevent the interconnections functioning correctly. Examples of issues to be considered when specifying
wireless interconnections are included in G.1.3.
7.3.4 Setting and unsetting
Care should be taken when selecting the means of setting and unsetting. Whenever possible completion
of setting and unsetting should require a deliberate action by the user.
Audible or visual indication should be perceivable to indicate when the setting or unsetting procedure is in
progress and/or has been completed.
7.3.4.1 Setting
Setting may be either initiated within the supervised premises and completed outside the supervised
premises or the entire setting procedure may be completed outside the supervised premises, using
appropriate ACE. The IAS should not set until the IAS is in a normal condition. The IAS may allow certain
limited conditions preventing setting to be overridden.
NOTE Subclause 8.3.3.1 of EN 50131-1 includes requirements relating to overriding certain conditions and 8.3.6 &
8.3.7 of EN 50131-1 permit the isolation and inhibiting of function respectively.
When setting is initiated within the supervised premises and is to be completed outside the supervised
premises, a maximum time should be permitted to complete the setting procedure. When the maximum
setting period is exceeded an indication should be provided.
When setting is initiated within the supervised premises and completed outside the supervised premises
an indication should be perceivable when the setting procedure is initiated and when setting is completed.
This indication should be time limited.
When setting of the IAS is to be performed entirely outside the supervised premises an indication should
be perceivable when the IAS is set. This indication should be time limited.
7.3.4.2 Unsetting
Unsetting may be either initiated outside the supervised premises and completed within the supervised
premises or may be performed entirely outside the supervised premises using appropriate ACE.
Consideration should be given to preventing physical access to the supervised premises, via the final exit
point, until either the entry procedure has been initiated or the IAS has been unset.
When unsetting is initiated outside the supervised premises and completed inside the supervised
premises an indication should be provided when the unsetting procedure is initiated and when unsetting
is completed.
When unsetting of the IAS is to be performed entirely outside the supervised premises an indication
should be provided when the IAS is unset. This indication should be time limited.
A maximum time period should be permitted to complete the unsetting procedure. When the maximum
unsetting period is exceeded an alarm condition should be notified.
7.3.5 Entry and exit routes
When setting or unsetting of the IAS is to be carried out in two stages, the route between these two points
should be carefully considered and be as short as possible.
EXAMPLE: setting initiated at the CIE or ACE and completed at the final exit point.
Indication provided during the setting and unsetting procedures, when setting or unsetting is achieved in
two stages, should be perceivable throughout the entry and/or exit route and immediately outside the final
exit point.
The CIE should be configured such that signals or messages from detectors on the exit/entry route,
activated during the setting or unsetting procedure, are not processed as intruder signals or messages.
Detectors located on the exit/entry route should be monitored and the IAS should not set until the IAS is
in the normal condition.
7.3.5.1 Exit routes
When a detector not on the exit route is activated during the setting procedure an indication should be
provided and completion of the setting procedure prevented.
7.3.5.2 Entry routes
When a detector not on the entry route is activated during the unsetting procedure an alarm condition
should be notified.
7.3.6 Indication
Mandatory requirements for indications are included in EN 50131-1. These require all mandatory
indications to be available together at one location. Indications may be repeated, in whole or in part, at
other locations.
Individual indication should be provided to indicate the alarm status of each active detector.
EXAMPLE 1: movement, vibration, acoustic or infra-red beam detectors.
Not more than ten non-active detectors may share a common means of indication.
EXAMPLE 2: magnetic or mechanical contacts.
7.3.7 Grouping of detectors
Individual detectors maybe grouped together for control or other purposes.
EX
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