IEC 62851-1:2014

Alarm and electronic security systems - Social alarm systems - Part 1: System requirements

IEC 62851-1:2014 specifies the minimum requirements for a social alarm system allowing the vocal and/or visual communication between a person and a social alarm service. For people with disabilities (e.g. visual and hearing impairment), additional requirements not covered in this series of standards may apply.

Systèmes d'alarme et de sécurité électroniques - Systèmes d'alarme sociale - Partie 1: Exigences système

L'IEC 62851-1:2014 spécifie les exigences minimales pour un système d'alarme sociale permettant la communication vocale et/ou visuelle entre une personne et un service d'alarme sociale. Pour les personnes souffrant d'incapacités physiques (ex. déficience visuelle et auditive), des caractéristiques supplémentaires non traitées dans ces séries de normes peuvent s'appliquer.

General Information

• Status: Published
• Publication Date: 09-Apr-2014
• ICS: 13.320 - Alarm and warning systems
• Technical Committee: TC 79 - Alarm and electronic security systems
• Current Stage: PPUB - Publication issued
• Start Date: 10-Apr-2014
• Completion Date: 30-Apr-2014

Standards Content (Sample)

IEC 62851-1 ®
Edition 1.0 2014-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Alarm and electronic security systems – Social alarm systems –
Part 1: System requirements
Systèmes d'alarme et de sécurité électroniques – Systèmes d'alarme sociale –
Partie 1: Exigences système
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IEC 62851-1 ®
Edition 1.0 2014-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Alarm and electronic security systems – Social alarm systems –

Part 1: System requirements
Systèmes d'alarme et de sécurité électroniques – Systèmes d'alarme sociale –

Partie 1: Exigences système
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX M
ICS 13.320 ISBN 978-2-8322-1500-5

– 2 – IEC 62851-1:2014 © IEC 2014
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 System requirements . 7
4.1 General . 7
4.2 Local unit and controller identification . 8
4.3 Alarm and fault identification . 8
4.4 2-way speech communication facility . 8
4.5 Use of personal receiver(s) . 8
4.6 Fault indication . 8
4.7 Calling the user . 8
4.8 Logging alarm and fault conditions . 8
4.9 System design . 8
4.10 Confirmation of alarm or fault reception . 9
5 Environmental classes . 9
6 Documentation . 9
Annex A (normative) Functional elements of a social alarm system . 10
Annex B (informative) Examples of different types of local unit and controller
configurations . 11
Bibliography . 13

Figure A.1 – Functional elements of a social alarm system . 10
Figure B.1 – Local unit and controller combined . 11
Figure B.2 – Multiple local units connected to a single controller . 12

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ALARM AND ELECTRONIC SECURITY SYSTEMS –
SOCIAL ALARM SYSTEMS –
Part 1: System requirements
FOREWORD
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International Standard IEC 62851-1 has been prepared by IEC technical committee 79: Alarm
and electronic security systems.
This first edition is based on EN 50134-1:2002.
The text of this standard is based on the following documents:
FDIS Report on voting
79/456/FDIS 79/467/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – IEC 62851-1:2014 © IEC 2014
A list of all parts in the IEC 62851 series, published under the general title Alarm and
electronic security systems – Social alarm systems, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC web site under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
INTRODUCTION
This standard is part of the IEC 62851 series of International Standards and Technical
Specifications “Alarm and electronic security systems – Social alarms systems“, written to
include the following parts:
– Part 1: System requirements
– Part 2: Trigger devices
– Part 3: Local unit and controller
– Part 5: Interconnections and communications
– Part 7: Application guidelines (under consideration)
A social alarm system provides 24 hours facilities for alarm triggering, identification, signal
transmission, alarm reception, logging and 2-way speech communication, to provide
reassurance and assistance for people living at home or at places under surveillance and
considered to be at risk.
A social alarm system is comprised of a number of system parts which can be configured in
different ways to provide this functionality.
A user can request assistance by the use of a manually activated trigger device resulting in
an alarm triggering signal. In certain cases, alarm triggering signals can be generated by
automatic trigger devices. A local unit or controller receives the alarm triggering signal,
switching from the normal to the alarm condition and indicating this to the user (some systems
use an optional pre-alarm condition that allows the user to reset the alarm for a short period
of time).
The controller normally transmits the alarm condition to an Alarm Receiving Centre (ARC) via
the alarm transmission system. The ARC can either be local to the controller or remote from
the controller. The ARC has the facility to identify the local unit, alarm type and to then
establish two-way speech communication between the alarm recipient and the user. The
alarm recipient provides reassurance to the user and directs assistance where appropriate.
In some cases, the alarm may be diverted to an alarm recipient using a personal receiver. In
this case, the alarm is identified to the alarm recipient and a two-way speech communication
path established to the user and receipt of the alarm acknowledged to the controller. In all
cases, the system records the time, date, location and type of alarm.
The system is designed to detect and report fault conditions affecting the transmission of
alarms. In some cases, temporary disconnection of a local unit is possible to minimize faults
or prevent alarms triggered inadvertently affecting the correct operation of the system.

– 6 – IEC 62851-1:2014 © IEC 2014
ALARM AND ELECTRONIC SECURITY SYSTEMS –
SOCIAL ALARM SYSTEMS –
Part 1: System requirements
1 Scope
This part of IEC 62851 specifies the minimum requirements for a social alarm system allowing
the vocal and/or visual communication between a person and a social alarm service. For
people with disabilities (e.g. visual and hearing impairment), additional requirements not
covered in this series of standards may apply.
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/IEC Guide 37:2012, Instructions for use of products by consumers
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
alarm condition
condition following the pre-alarm condition
3.2
alarm receiving centre
ARC
system part which provides facilities for communication with a number of controllers and
providing the alarm receiving and information processing system as an interface to the alarm
recipient
3.3
alarm recipient
person who receives and acts upon an alarm signal
3.4
alarm transmission system
transmission system that provides communication between the controller and the alarm
receiving centre or an alarm recipient
3.5
alarm triggering signal
signal transmitted by a trigger device to indicate an alarm
3.6
controller
interface between one or more local units and the alarm transmission system or alarm
recipient
3.7
fault condition
condition following detection of a fault by the local unit and controller that prevents the
functioning of the system
3.8
fault indication
indication of a fault condition
3.9
local unit
interface between the user and the controller which enables 2-way speech
3.10
personal receiver
system part which provides 2-way speech communication and facilities for identifying and
acknowledging the alarm
3.11
pre-alarm condition
condition following the reception of an alarm triggering signal
3.12
normal condition
condition during which the system is fully operational and is not in any other condition
3.13
social alarm system
system providing 24 hour facilities for alarm triggering, identification, signal transmission,
alarm reception, 2-way speech communication, reassurance and assistance, for use by
persons who can be considered to be living at home at risk
3.14
trigger device
system part, operated by a human or automatically, that communicates to the local unit and
controller, initiating the alarm triggering signal
4 System requirements
4.1 General
As a minimum, a social alarm system shall consist of the following system parts (see Figure
A.1):
– manually activated trigger device;
– local unit;
– controller;
– alarm transmission system;
– ARC.
All system parts shall comply with the relevant part of the IEC 62851 series. Additional
equipment shall not prohibit the correct functioning of the social alarm system.
Please refer to Annex A (normative) and Annex B (informative).

– 8 – IEC 62851-1:2014 © IEC 2014
4.2 Local unit and controller identification
The system shall be capable of identifying the local unit and the controller which is in the
alarm or fault condition.
4.3 Alarm and fault identification
The system shall identify the different types of alarms and faults.
4.4 2-way speech communication facility
A social alarm system shall be equipped with a 2-way speech communication facility to allow
verbal contact between alarm recipient and the user.
2-way speech communication between the alarm recipient and the user shall be provided
following the receipt of an alarm from a manually activated trigger device.
In a system where the direction of the speech communication is manually switched, the
direction shall be controlled by the alarm recipient.
4.5 Use of personal receiver(s)
In the case of a personal receiver(s) being used to receive alarm and fault signals, the system
shall be configured so that, in the case of no response from the personal receiver(s), the
alarm and fault signals shall be automatically transmitted to an ARC.
4.6 Fault indication
The system shall have the facility to indicate faults affecting the transmission of alarms and
faults.
4.7 Calling the user
If the facility exists to call the user in a non-alarm situation, then
a) the call shall be preceded by an audible signal,
b) the system shall have a privacy function to allow the user to prevent listening in and this
function shall be overridden in an alarm condition,
c) if the privacy function is active, the user shall have to take a positive action before a 2-
way speech communication can be established.
4.8 Logging alarm and fault conditions
The system shall log alarms and faults by recording the following:
– date and time of alarm or fault;
– identity of the local unit and controller;
– type of alarm or fault condition.
4.9 System design
The system design shall:
– prevent any single local unit and controller (see Figures B.1 and B.2) prohibiting the
functioning of other local units and controllers;
– incorporate a back-up ARC.
4.10 Confirmation of alarm or fault reception
The system shall confirm to the controller the reception of an alarm or fault signal and notify
to the ARC trough ATS.
5 Environmental classes
System parts with the appropriate environmental class shall be selected to ensure correct
operation in their service environment.
There are 4 environmental classes which apply to system parts:
Class Environment
I Indoor but restricted to a residential environment
II Indoor in general
III Outdoor but sheltered from direct rain and sunshine or indoor with extreme
environmental conditions
IV Outdoor in general
Classes I, II, III and IV are progressively more severe and therefore, class IV equipment may
be used in class III applications etc.
NOTE The order of the environmental classes is not representative of radio transmission performance.
6 Documentation
The following requirements apply to documentation:
a) Documentation relating to the system and system design shall be concise, complete and
unambiguous and shall include as a minimum the following:
– name of manufacturer or supplier;
– description of equipment;
– environmental class.
b) The documentation provided shall be sufficient to install, commission, and main
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