ISO INTERNATIONAL STANDARD 7240-2 Second edition 2017-11 Fire detection and alarm systems Part 2: Fire detection control and indicating equipment Systemes de detection et d'alarme d'incendie- Partie 2: Equipement de controleet de signalisation Reference number IS0 7240-2:2017(E) TSO @IS02017 Copyright Intemafional Organization for Standardization er license with ANS Not for Resale, 12/01/2017 01:08:32 MST IS0 7240-2:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland 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 Ch. de Blandonnet 8. CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org ISO 2017-All rightsreserved r networking permited without icanse from IHS Not for Resale, 12/01/2017 01:08:32 MST IS0 7240-2:2017(E) Contents Page Foreword ..vi Introduction. ..vi 1 Scope. 2 Normative references 3 Terms,definitions and abbreviated terms 4 Requirements ..2 4.1 General. .2 4.2 Compliance. ..3 4.3 Quiescent condition. .3 Fire alarm condition .3 4.4 4.4.1 Reception and processing offire signals. 3 4.4.2 Indicationoffirealarmcondition 4.4.3 Indication offire detection zones in alarm 4 4.4.4 Audibleindication .4 4.4.5 Other indications during the fire alarm condition .5 4.4.6 Resetfromfirealarm condition. .5 4.4.7 Output of firealarm condition. .5 4.4.8 Output to fire alarm signalling function -Optional function .5 4.4.9 Control of firealarm routingfunctionOptional function.. .6 4.4.10 OutputtofireprotectioncontrolfunctionOptional function 6 4.4.11 Delays to outputs Optional function. 4.4.12 Dependencyonmorethanonealarm signalOptional function .8 4.4.13 Alarm counter-Optionalfunction .9 4.4.14 Output of standard emergency evacuation signal -Optional function .9 4.5 Faultwarning condition. .9 4.5.1 Receptionandprocessing of fault signals .9 4.5.2 Indication of faults. 9 4.5.3 Fault monitoring of fireprotection control functionOptional function 4.5.4 Fault signals from points- Optionalfunction .11 4.5.5 Total loss of the power supply - Optional function ..11 4.5.6 Systemfault. .11 4.5.7 Audible indication .11 4.5.8 Resetoffaultindications .12 4.5.9 Fault output .12 4.5.10 OutputtofaultwarningroutingfunctionOptionalfunction .12 4.6 Disabled condition- Optionalfunction .12 .12 4.6.1 General. 4.6.2 Disablements. .13 4.6.3 Disablementand enablementofaddressablepoints- Optional function ..13 Indication ofthedisabled condition .13 4.6.4 4.7 Test condition- -Optionalfunction ..14 4.7.1 General requirements .14 4.7.2 Indication of test condition ..14 4.7.3 Indicationoffiredetectionzonesinteststate ..14 4.8 Supervisory signal condition - Optional function. .14 4.8.1 Reception and processing ofsupervisorysignals .14 4.8.2 Indication of the supervisory signal condition .15 4.8.3 Indication ofthesupervisorysignalsfromfiredetectionzones .15 4.8.4 Audible indication .15 ..16 4.8.5 Reset of supervisory signal 4.8.6 Supervisory signal condition output .16 4.9 Standardized input/output interface-Optionalfunction ..16 4.10 Accessibility of indications and controls .17 iii Provided by IHS Markit underlicense with ANS Not for Resale, 12/01/2017 01:08:32 MST