ISO INTERNATIONAL STANDARD 7240-18 Second edition 2017-09 Fire detection and alarm systems : Part 18: Input/output devices Systemes de détection et d'alarme d'incendie - Partie 18: Dispositifs d'entrée/sortie Reference number IS0 7240-18:2017(E) ISO @ IS0 2017 IS0 7240-18:2017(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+4122 74909 47 copyright@iso.org www.iso.org ii @ IS0 2017 - All rights reserved IS0 7240-18:2017(E) Contents Page Foreword .V Introduction .vi 1 Scope. .1 2 Normative references ..1 3 Terms, definitions and abbreviated terms .1 3.1 Terms and definitions.. 2 3.2 Abbreviated terms.... 2 4 Requirements. .2 4.1 Compliance. 2 4.2 Monitoring of detachable devices 4.3 Requirements for software controlled devices 3 4.3.1 General. .3 4.3.2 Software design. 3 4.3.3 Storage of programs and data 3 5 Tests .3 5.1 General .3 5.1.1 Atmospheric conditions for tests 3 5.1.2 Mounting arrangements. 3 5.1.3 Operating conditions for tests 4 5.1.4 Tolerances.. 4 5.1.5 Functional test 5.1.6 Provision for tests. 4 5.1.7 Test schedule 4 5.2 Performance and variation in supply parameters 5 5.2.1 Objectoftest. 5 5.2.2 Test procedure. 5 5.2.3 Requirements 5 5.3 Dry heat (operational) 5 5.3.1 Object of test. 5 5.3.2 Test procedure. 6 5.3.3 Requirements 6 5.4 Cold (operational) 6 5.4.1 Object of test. 6 5.4.2 Test procedure 6 5.4.3 Reguirements 7 5.5 Damp heat, cyclic (operational) 7 5.5.1 Object oftest. 7 5.5.2 Test procedure 7 5.5.3 Requirements 8 5.6 Damp heat, steady-state (endurance) 8 5.6.1 Object of test.. 8 5.6.2 Test procedure. 8 5.6.3 Requirements 5.7 Sulfur dioxide (SO2) corrosion (endurance) 9 5.7.1 Objectoftest. 9 5.7.2 Test procedure 9 5.7.3 Requirements 10 5.8 Shock (operational) 10 5.8.1 Object of test. 10 5.8.2 Test procedure 10 5.8.3 Requirements 11 5.9 Impact (operational), 11 @ IS0 2017 - All rights reserved ii