IEC 60811-507:2012

SLOVENSKI STANDARD
01-junij-2002
Alarm systems - Part 5: Requirements for alarm transmission systems - Section 2:
General requirements for equipment
Alarm systems - Part 5: Requirements for alarm transmission systems - Section 2:
General requirements for equipment
Systèmes d'alarme - Partie 5: Prescriptions pour les systèmes de transmission d'alarme
- Section 2: Prescriptions générales pour les matériels utilisés
Ta slovenski standard je istoveten z: IEC 60839-5-2
ICS:
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME CEI
INTERNATIONALE IEC
60839-5-2
INTERNATIONAL
Première édition
STAN DARD
First edition
1991-04
Systèmes d'alarme
Partie 5:
Prescriptions pour les systèmes de transmission
d'alarme
Section 2: Prescriptions générales
pour
les matériels utilisés
Alarm systems
Part 5:
Requirements for alarm transmission systems
Section 2: General requirements for equipment
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839-5-2 © IEC - 3 -
CONTENTS
Page
FOREWORD 5
Clause
1 Scope 7
2 Normative references 7
3 General considerations 9
4 Requirements 9
5 Electrical safety and protection 13
6 Environmental requirements 13
7 Test methods 15
8 Marking 23
9 Product specification 23
839-5-2 © IEC - 5 -
INTERNATIONAL ELECTROTECHNICAL COMMISSION
ALARM SYSTEMS
Part 5: Requirements for alarm transmission systems
Section 2: General requirements for equipment
FOREWORD
1)
The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on
which all the National Committees having a special interest therein are represented, express, as nearly as
possible, an international consensus of opinion on the subjects dealt with.
2)
They have the form of recommendations for international use and they are accepted by the National
Committees in that sense.
3) in order to promote international unification, the IEC expresses the wish that all National Committees
should adopt the text of the IEC recommendation for their national rules in so far as national conditions will
permit. Any divergence between the IEC recommendation and the corresponding national rules should, as
far as possible, be clearly indicated in the latter.
This section of the International Standard IEC 839-5 has been prepared by IEC,Technical
Committee No. 79: Alarm systems.
The text of this section is based on the following documents:
Six Months' Rule Report on Voting Two Months' Procedure
Report on Voting
79(CO)20
79(00)30 79(00)38 79(00)48
Full information on the voting for the approval of this section can be found in the Voting
Report
s indicated in the above table.

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839-5-2 © IEC
ALARM SYSTEMS
Part 5: Requirements for alarm transmission systems
Section 2: General requirements for equipment
1 Scope
This section of IEC 839-5 specifies the general requirements for equipment used in alarm
transmission systems.
It does not specify the equipment used to display the information at the alarm receiving
centre or the installation of the equipment.
Additional requirements for specific types of alarm transmission systems are given in
separate sections as part of IEC 839-5. This does not preclude the use of any alarm trans-
mission system not covered by one of these specific sections, provided that it meets these
general requirements.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute
provisions of this section of IEC 839-5. At the time of publication, the editions indicated
were valid. All standards are subject to revision, and parties to agreements based on this
section of IEC 839-5 are encouraged to investigate the possibility of applying the most re-
cent editions of the standards indicated below. Members of IEC and ISO maintain regis-
ters of currently valid International Standards.
IEC 68, Environmental testing.
Principles concerning the safety of equipment electrically connected
IEC Guide 105: 1985,
to a telecommunications network.
IEC 529: 1989, Degrees of protection provided by enclosures (IP Code).
IEC 664: 1980, Insulation co-ordination within low-voltage systems including clearances
and creepage distances for equipment.
IEC 801, Electromagnetic compatibility for industrial-process measurement and control
equipment.
IEC 839-1-1: 1988, Alarm systems - Part 1: General requirements - Section One: General.
IEC 839-1-3: 1988, Alarm systems - Part 1: General requirements - Section Three:
Environmental testing.
839-5-2 © IEC - 9 -
Alarm systems - Part 5: Requirements for alarm transmission systems
IEC 839-5-1: 1991,
- Section 1: General requirements for systems.
CCITT Protection against interference, Vol. IX: 1989,
- Recommendation K.21: Resistivity of subscribers' terminals to overvoltages and
overcurrents.
CCITT Data communication over the telephone network, Vol. VIII, Fascicle VIII.1: 1985.
- Recommendation V.24: List of definitions for interchange circuits between data
terminal equipment and data circuit-terminating equipment.
- Recommendation V.28: Electrical characteristics for unbalanced double-current
interchange circuits
- Recommendation V.31 bis: Electrical characteristics for single-current interchange
circuits using optocouplers.
3 General considerations
Where use is made of public networks, the relevant recommendations (CCITT, CCIR, etc.)
are applicable. Where appropriate, reference should also be made to the ISO Open
System Interconnection (OSI) layered architecture model.
4 Requirements
4.1 Equipment at the supervised premises
4.1.1 Equipment container
Where the equipment is supplied in its own container, it shall meet the requirements of
Class IP3X as described in IEC 529.
4.2 Interface with the alarm transmission system
Alarm transmission equipment installed at the supervised premises and designed to inter-
face with alarm systems from different suppliers shall provide an alarm system inte rface
meeting the requirements of 4.2.1 or 4.2.2.
Alarm transmission equipment installed at the alarm receiving centre and designed to inter-
face with annunciation equipment from different suppliers shall provide a terminal inte rface
meeting the requirements of 4.2.1 or 4.2.2.
4.2.1 D.C. switching at the interface
The alarm transmission system shall not respond to input signals at the interface lasting
less than 50 ms and shall respond to input signals lasting more than 200 ms.
The alarm transmission system shall provide output signals at the inte rface of a duration
greater than 200 ms.
IEC -
839-5-2 © 11 -
The electrical inte rface shall be either:
1) an electrical interface in accordance with the CCITT V.31 bis Recommendation, or
the alarm transmission system shall transmit an alarm condition when a d.c. voltage
2)
of either greater than 10,2 V in a nominal 12 V system or 20,4 V in a nominal 24 V
system is applied to the input.
The alarm condition shall cease to be transmitted when the input current is reduced below
2,5 mA for longer than 1 s.
An alarm or fault condition shall not be transmitted when a monitoring current of greater
than 2,5 mA, but less than 10 mA, is flowing through the input circuit.
The input impedance of the alarm transmission system shall not exceed 1 ka.
4.2.2 Serial data interface
Functional interface
a)
ace at physical level shall follow the CCITT V.24 Recommendation.
The functional inte rf
NOTE - This is the same as RS232C.
b) Electrical interface
The electrical inte rface shall follow the CCITT V.28 Recommendation.
Monitoring of the connection to the alarm transmission system
4.3
4.3.1 D. C. switching at the interface
With all of the inputs from the alarm system in their normal condition (non-alarm), the
alarm transmission equipment shall monitor the connections to the alarm system and shall
generate an alarm or fault condition within 1 s in the event of a short of all of the conduc-
tors or an open circuit of any conductor that would inhibit the transmission of an alarm
from the alarm system.
NOTE - It is recommended that failure of this connection should also be monitored by the alarm system.
Details of the method of monitoring, and of any restrictions, shall be given in the product
specification.
4.3.2 Serial data interface
The integrity of the interface to the alarm system shall be monitored by the regular trans-
mission of a status message in both directions and an alarm or fault signal shall be genera-
ted within 1 s in the alarm system and in the alarm transmission system in the event of a
failure to communicate.
Facilities shall be provided to allow the monitoring of the terminal inte rface by the annun-
ciation equipment.
839-5-2 © IEC -13 -
Details of the method of monitoring, and of any restrictions, shall be given in the product
specification.
5 Electrical safety and protection
Protection of persons and resistibility of alarm transmission equipment against electrical
shock, fire and consequential hazards shall be provided in accordance with IEC relevant
standards and with IEC Guide 105.
Tests related to mains voltage connection points shall be designed in accordance with IEC
664 to withstand conditions occurring on the mains supply connection.
The equipment shall include protection against power induction, power contact and the
effects of lightning such that it meets the requirements of the CCITT K.21
Recommendation for categories without the addition of agreed primary protection.
6 Environmental requirements
6.1 All equipment
The equipment shall continue to meet the requirements of this section of IEC 839-5 when
subjected to the following environmental conditions and shall not generate false alarms or
fault messages or modify transmitted messages.
The environmental requirements are intended to apply to equipment for use in weather
protected locations. If the equipment is intended for use in outdoor installations, the tests
listed below shall be carried out using severity levels appropriate for such applications.
6.1.1 Dry
heat
Dry heat of +40 °C for 16 h as described in IEC 839-1-3, test A-1 (severity 3).
6.1.2 Cold
Low temperature of +5 °C for 16 h as described in IEC 839-1-3, test A-2 (severity 2).
6.1.3
Electrical spikes
Electrical spikes as described in IEC 839-1-3, test A-9 (severity 4).
6.1.4
Electrostatic discharges
Electrostatic discharges as described in IEC 839-1-3, test A-11 (severity 3).
6.1.5
Electromagnetic fields
Electromagnetic fields as described in IEC 839-1-3, test A-13 (severity 3).

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839-5-2 © 'EC
6.2 Equipment at the supervised premises
Equipment intended for installation at the supervised premises shall continue to meet the
requirements of this section of IEC 839-5 when subjected to the following additional
environmental conditions and shall not generate false alarms or fault messages or modify
transmitted messages.
6.2.1 Sinusoidal vibrations
Sinusoidal vibrations as described in IEC 839-1-3, test A-4 (severity 1).
7 Test methods
For the purpose of testing, the equipment shall be connected together either directly or via
a network which may be a simulated network.
7.1 Functional test
The equipment shall be tested by the sending of an alarm condition, followed by an alarm
restore, from one of the normal alarm inputs. The fault detection times and the times taken
to transmit alarm and fault messages shall meet the values given in the product specifi-
cation.
Where separate standards exist for specific types of alarm transmission systems any
additional basic functional test specified in those standards shall also be applied.
7.1.1 Basic functional test
An alarm condition shall be presented to the equipment and it shall generate an alarm
message. Thereafter the alarm condition shall be restored and the equipment shall return
to its normal state, transmitting a restore message when this is specified in the product
specification.
7.1.2 Attenuation
The basic test shall be carried out with both the maximum and minimum attenuations
specified in the product specification in all transmission paths.
7.2 Interface test
The following tests on the equipment shall be carried out at ambient temperature and
humidity and with the supply voltage at its nominal value and at +25 % and -15 % of the
nominal value for d.c. supplies and at +10 % and -15 % of the nominal values for a.c.
supplies.
7.2.1 Interfaces complying with 4.2.1 (1)
These shall be tested to the requirements specified in the CCITT V.31 bis
Recommendation.
839-5-2 ©IEC - 17 -
7.2.2 Interfaces complying with 4.2.1 (2)
The input terminals of the alarm transmission equipment shall be connected to a current
source. Currents greater than 2,5 mA but less than 10 mA shall not generate an alarm or
fault condition.
With a d.c. voltage source connected in parallel with the current source and a voltage of
10,2 V (in a nominal 12 V system) or 20,4 V (in a nominal 24 V system) applied to the
input for 200 ms, an alarm message shall be generated.
With the d.c. voltage source disconnected, the current source shall be reduced to 2,4 mA
and the alarm condition shall restore within 1 s.
7.2.3 Interfaces complying with 4.2.2
Serial data shall be transmitted to and received from the unit under test in a data pattern
in
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