AS 1670 3 1997 fire detection, warning control and intercom

AS 1670.3 — 1997 4STANDARDS AUSTRALIA Australian Standard Fire detection, warning, control and intercom systems— System design, installation and commissioning Part 3: Monitoring network

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AS 1670.3-1997 Fire detection, warning control and intercom systems - System,

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AS 1670.3—1997

Australian Standard 

Fire detection, warning, control and intercom systems—System design, installation and commissioning

Part 3: Monitoring network performance

This Australian Standard was prepared by Committee FP/2, Fire Detection, Warning, Control and Intercom Systems It was approved on behalf of the Council

of Standards Australia on 6 December 1996 and published on 5 February 1997

The following interests are represented on Committee FP/2:

Audio Engineering Society Australian Building Codes Board Australian Chamber of Commerce and Industry Australian Chamber of Manufactures

Australian Electrical and Electronic Manufacturers Association Australian Fire Authorities Council

Australian Fire Protection Association Commonwealth Fire Board

CSIRO — Division of Building, Construction and Engineering Deafness Forum of Australia

Department of Defence Fire Protection Industry Association of Australia Fire Protection Industry Contractors Association of New Zealand Insurance Council of Australia

National Electrical Contractors Association of Australia New Zealand Fire Equipment Association

New Zealand Fire Protection Association New Zealand Fire Protection Industry Contractors Association Property Council of Australia

Scientific Services Laboratory AGAL — Department of Administrative Services Telstra Corporation

Review of Australian Standards To keep abreast of progress in industry, Australi an Standards are

subject to periodic review and are kept up to date by the issue of amendments or new editions as necessary It is important therefore that Standards users ensure that they are in possession of the latest editi on, and any amendments thereto.

Full details of all Australi an Standards and related publicati ons will be found in the Standards Australia Catalogue of Publications; this information is supplemented each month by the magazine ‘The Australian Standard’, which subscribing members receive, and which gives details of new publications, new editions and amendments, and of wit hdrawn Standards.

Suggestions for improvements to Australian Standards, addressed to the head office of Standards Australia, are welcomed Notification of any inaccuracy or ambiguity found in an Australian Standard should be made wit hout delay in order that the matter may be investigated and appropriate action taken.

This Standard was issued in draft form for comment as DR 96018.

AS 1670.3—1997

Australian Standard 

Fire detection, warning, control and intercom systems—System design, installation and commissioning

Part 3: Monitoring network performance

PUBLISHED BY STANDARDS AUSTRALIA (STANDARDS ASSOCIATION OF AUSTRALIA)

1 THE CRESCENT, HOMEBUSH, NSW 2140

ISBN 0 7337 0911 7

AS 1670.3 — 1997 2

PREFACE

This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee FP/2, Fire Detection, Warning, Control and Intercom Systems

This Standard is a result of a consensus among representatives on the Joint Committee to produce it as an Australian Standard

This Standard sets down minimum performance requirements for a network used to monitor automatic fire detection and alarm systems using the communications protocol

defined in AS 4418.2, Supervisory control and data acquisition (SCADA)—Generic telecommunications interface and protocol , Part 2: Fire alarm systems This Standard has

been published for the use of equipment manufacturers and monitoring service providers

in the fire industry; however, other industry groups may find the performance requirements applicable

AS 4418.2 has been prepared to be consistent with requirements developed by IEC and

published in the IEC 870 series of International Standards, Telecontrol equipment and systems.

The term ‘informative’ has been used in this Standard to define the application of the appendix to which it applies An ‘informative’ appendix is only for information and guidance

 Copyright STANDARDS AUSTRALIA Users of Standards are reminded that copyright subsists in all Standards Australi a publications and software Except where the Copyri ght Act allows and except where provided for below no publi cati ons or software produced by Standards Austr alia may be reproduced, stored in a retri eval system in any form or transmitt ed by any means wit hout prior permission in wri ti ng from Standards Austr alia Permission may be conditi onal on an appropri ate royalty payment Requests for permission and information

on commercial soft ware royalt ies should be dir ected to the head off ice of Standards Australi a.

Standards Austr alia wil l permit up to 10 percent of the technical content pages of a Standard to be copied for use exclusively in-house by purchasers of the Standard without payment of a royalty or advice to Standards Austr alia.

Standards Austr alia will also permit the inclusion of its copyri ght material in computer soft ware programs for no royalt y payment provided such programs are used exclusively in-house by the creators of the programs.

Care should be taken to ensure that material used is fr om the current editi on of the Standard and that it is updated whenever the Standard is amended or revised The number and date of the Standard should therefore be clearly identif ied.

The use of materi al in pri nt form or in computer soft ware programs to be used commerciall y, wit h or wit hout payment, or in commercial contr acts is subject to the payment of a royalt y This policy may be varied by Standards Australi a at any ti me.

3 AS 1670.3 — 1997

CONTENTS

Page

SECTION 1 SCOPE AND GENERAL

1.1 SCOPE 4

1.2 APPLICATION 4

1.3 REFERENCED AND RELATED DOCUMENTS 4

1.4 DEFINITIONS 5

SECTION 2 PERFORMANCE REQUIREMENTS 2.1 GENERAL 6

2.2 NON-PERMANENTLY CONNECTED CONTROLLED STATIONS 6

2.3 PERMANENTLY CONNECTED CONTROLLED STATIONS 6

2.4 MULTIPLE STATUS CHANGES 7

APPENDIX A SYSTEM OVERVIEW 8

First published as AS 1670.3 — 1997.

AS 1670.3 — 1997 4

STANDARDS AUSTRALIA

Australian Standard Fire detection, warning, control and intercom systems—

System design, installation and commissioning

Part 3: Monitoring network performance

1.1 SCOPE This Standard sets out performance requirements for fire alarm monitoring networks using the telecommunications protocol defined in AS 4418.2

1.2 APPLICATION The performance requirements of this Standard are applicable to supervisory control and data acquistion (SCADA) networks for fire alarm monitoring applications

NOTE: See Appendix A for system overview

The performance requirements for both permanently connected controlled stations and non-permanently connected controlled stations are specified

NOTE: Non-permanently connected controlled stations are not considered adequate for installations required to be monitored under the Building Code of Australia

1.3.1 Referenced documents The following documents are referred to in this Standard: AS

2484 Fire— Glossary of terms

2484.2 Part 2: Fire protection and firefighting equipment

AS/NZS

4418 Supervisory control and data acquisition — Generic telecommunications interface

and protocol 4418.2 Part 2: Fire alarm systems

IEC

870 Telecontrol equipment and systems

870-4 Part 4: Performance requirements

870-5-5 Part 5: Transmission protocols — Section 5: Basic application functions

1.3.2 Related documents Attention is drawn to the following related documents: IEC

870 Telecontrol equipment and systems

870-1-1 Part 1: General considerations — Section 1: General principles

870-1-2 Part 1: General considerations — Section 2: Guide for specifications

870-1-3 Part 1: General considerations — Section 3: Glossary

870-1-4 Part 1: General considerations — Section 4: Basic aspects of telecontrol data

transmission and organization of standards IEC 870-5 and IEC 870-6 IEC

870-2-1 Part 2: Operating conditions — Section 1: Environmental conditions and power

supplies 870-3 Part 3: Interfaces (electrical characteristics)

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5 AS 1670.3 — 1997

IEC

870-5-1 Part 5: Transmission protocols — Section 1: Transmission frame formats

870-5-2 Part 5: Transmission protocols — Section 2: Link transmission procedures

870-5-3 Part 5: Transmission protocols — Section 3: General structure of application

data 870-5-4 Part 5: Transmission protocols — Section 4: Definition and coding of

application information elements

1.4 DEFINITIONS For the purpose of this Standard, the definitions in the IEC 870 series of Standards, AS 2484.2 and those below apply

1.4.1 Alarm signalling equipment (ASE)— equipment designed to communicate alarm

and fault signals and other information between a fire alarm system and a monitoring service

1.4.2 Monitoring service — a controlling station which receives fire alarm signals and

transfers the signals to a fire brigade via a direct data link

1.4.3 Non-permanently connected controlled station — a controlled station which is

not permanently connected to a controlling station, such as a station which utilizes the public switched telephone network to make the communications link

1.4.4 Permanently connected controlled station — a controlled station which is permanently connected, or appears permanently connected, to a controlling station

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AS 1670.3 — 1997 6

2.1 GENERAL The SCADA network shall conform to the requirements of the following performance classes, set out in IEC 870-4:

(a) Reliability class R2 (MTBF≥4000 h)

(b) Maintainability class M3 (MTTR ≤12 h)

(c) Repair time class RT3 (MRT≤6 h)

(d) Data integrity class I2 (IE ≤10− 10)

The SCADA network configuration shall allow both non-permanently connected controlled stations and permanently connected controlled stations

Non-permanently connected controlled stations shall be configured to connect as point-to-point The SCADA network shall be configured to ensure the following:

(a) Status changes processed by the control and indicating equipment (CIE) are received

by the controlling station within 10 s of the establishment of the connection between the controlled station and the controlling station

NOTE: ASE should be configured to commence immediate calling of the controlling station upon confirmation of an alarm system status change

(b) The alarm system status summary of the controlled station is reported to the controlling station at least once every 24 h

(c) A test of the controlled station is undertaken by the controlling station at least once every 24 h

connected controlled stations shall be configured as point or multiple point-to-point

Permanently connected controlled stations shall include an alternative facility which is used in the event of the loss of the permanent link If the time-out interval for repeated frame transmissions is exceeded on the permanent link, the controlled station shall attempt

to contact the controlling station via the alternative facility In the event of the loss of the permanent link an indication shall be given at both the controlled station and the controlling station If the permanent link is unavailable, the performance requirements of Clause 2.2 shall be met

The SCADA network shall be configured to ensure the following:

(a) Actuating device alarm status changes processed by CIE are received by the controlling station within 15 s

(b) A telecommunications link failure from the controlled station is detected by the controlling station within 90 s

(c) Device fault, device isolate, alarm system isolate, CIE status and field terminal request status changes at the controlled station are received by the controlling station within 30 s of notification of the status change by the controlled station (d) CIE device configuration changes are received by the controlling station within

10 min of notification

(e) A test of the controlled station is undertaken by the controlling station at least once every 24 h

(f) Availability class A3 (A ≥99.95%) of IEC 870-4

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7 AS 1670.3 — 1997

2.4 MULTIPLE STATUS CHANGES If multiple status changes occur at the CIE simultaneously, the priority order for the controlled station to notify the controlling station shall be as follows:

(a) Actuating device alarm

(b) CIE status

(c) Actuating device fault

(d) Actuating device isolate

(e) CIE device configuration change

(f) Building data change

(g) Alarm system maintenance contractor change

(h) Field terminal session

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AS 1670.3 — 1997 8

SYSTEM OVERVIEW

(Informative)

A1 GENERAL The protocol allows for both permanently connected fire alarm systems and fire alarm systems which connect to the controlling station via the public switched telephone network

Balanced transmission is used to ensure adequate reporting response of alarm conditions Polling is not used (in conformance to IEC 870-5-5 for balanced transmission); however, cyclic transmission from each controlled station may be used to confirm the integrity of the communications link Event initiated transmission is used to report alarm system status changes Messages are either SEND/CONFIRM (e.g for alarm system status, clock synchronization) or REQUEST/RESPOND (e.g for details of actuating device in alarm) Cyclic transmission is used by non-permanently connected controlled stations to report the alarm system status summary at least once every 24 h Permanently connected controlled stations may report an alarm system status summary or may use other techniques to ensure the integrity of the transmission path

Whilst this Standard specifies many features and a high degree of functionality, other systems can still be accommodated Most responses from a controlled station allow a particular message from a particular controlling station to be ‘not implemented’ This can

be used by manufacturers to enable the production of a partially functional yet fully compliant alarm system DTE For example, the text area available for the description of the location of the actuating devices may be used to describe the area of an alarm zone, thus permitting the connection of collective CIE In this case, references to actuating devices should be read as alarm zones

A2 INITIALIZATION Initialization may occur as a result of a local power switch on,

a local manual reset or the controlling station remotely resetting the controlled station When powered up and enabled, the alarm signalling equipment (ASE) will begin to attempt to establish the link to the controlling station When the link is established the controlling station begins an initialization procedure The following steps are undertaken: (a) The delay acquisition time is calculated to ensure the clocks are synchronized (b) The controlling station time is sent to the controlled station

(c) Data resident in the controlled station is obtained by the controlling station This includes—

(i) the manufacturer and product specification of the alarm system;

(ii) the alarm system summary, which includes CIE fault status, alarm system

maintenance contractor, building classification and number of occupants; and (iii) all actuating devices, their current status and location within the protected

premises

Once initialization has occurred, the data resident in the controlled station and controlling station should be identical If the link fails, however, a buffer is used to queue events for reporting upon re-establishment of the link

If initialization occurs to a previously connected controlled station, the controlled station indicates to the controlling station whether or not the initialization is occurring with or without changes to local parameters This enables a more efficient initialization procedure

to be undertaken by the controlling station

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