1、 IEC GUIDE 110 Edition 2.0 2014-04 GUIDE Home control systems Guidelines relating to safety IEC GUIDE 110:2014-04(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2014 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or util
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10、publication or need further assistance, please contact the Customer Service Centre: csciec.ch. IEC GUIDE 110 Edition 2.0 2014-04 GUIDE Home control systems Guidelines relating to safety INTERNATIONAL ELECTROTECHNICAL COMMISSION M ICS 13.120; 97.200 PRICE CODE ISBN 978-2-8322-1517-3 Registered tradem
11、ark of the International Electrotechnical Commission Warning! Make sure that you obtained this publication from an authorized distributor. 2 IEC GUIDE 110:2014 IEC 2014 CONTENTS FOREWORD . 3 1 Scope 5 2 Normative references . 5 3 Terms and definitions. 5 4 Home control systems 6 5 Safety aspects . 9
12、 5.1 General considerations 9 5.2 Functional safety aspects 10 5.3 Equipment safety aspects 11 5.3.1 General . 11 5.3.2 Startup after failure 11 5.3.3 Lifetime safety . 11 5.3.4 Reasonably foreseeable misuse . 11 5.3.5 Summation of touch current . 11 5.3.6 Communication 11 6 Conclusions and recommen
13、dations 12 Bibliography 13 Figure 1 Examples of possible topologies . 8 Figure 2 Example of different ways of powering equipment . 9 IEC GUIDE 110:2014 IEC 2014 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ HOME CONTROL SYSTEMS GUIDELINES RELATING TO SAFETY FOREWORD 1) The International Electrotechn
14、ical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this
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23、 Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC
24、 Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. This second edition of IEC Guide 110 has been prepared, in accordance with the ISO/IEC Directives, Part 1, Annex A, by the IEC Advisory Committee on Safety (ACOS). This
25、is a non-mandatory guide in accordance with SMB Decision 136/8. This second edition of IEC Guide 110 cancels and replaces the first edition published in 1996. The main changes with respect to the previous edition are as follows (minor changes are not listed): addition of several new electrical safet
26、y aspects; inclusion of cyber security; consistent use of the term “equipment” to replace terms such as “device”, “system”, “product”, etc.; bringing the document structure in line with the latest ISO/IEC Directives; 4 IEC GUIDE 110:2014 IEC 2014 updating the references to standards and IEC technica
27、l committees to reflect the current situation. The text of this Guide is based on the following documents: Four months vote Report on voting C/1785A/DV C/1796/RV Full information on the voting for the approval of this Guide can be found in the report on voting indicated in the above table. This publ
28、ication has been drafted in accordance with the ISO/IEC Directives, Part 2. A bilingual version of this publication may be issued at a later date. IEC GUIDE 110:2014 IEC 2014 5 HOME CONTROL SYSTEMS GUIDELINES RELATING TO SAFETY 1 Scope This Guide provides background information to technical committe
29、es when dealing with safety requirements for products intended to be integrated in a home control system. It includes information on functional safety as well as conventional safety aspects relevant to home control systems. This Guide defines the safety-related characteristics of systems intended fo
30、r signal transmission through building wiring carrying low voltage or extra low-voltage, through fibre optics, through air or by electromagnetic waves in household and similar premises (home control systems). This Guide deals with home control systems providing control communication for equipment us
31、ed within homes. This includes the control of equipment for cooling, heating, lighting, audio/video, telecommunications, security, etc., in fact, any equipment controlled by the home control system. It also includes residential gateways between the internal home control system network and external w
32、ide-area networks such as the internet. The Guide also covers similar building management functions in commercial buildings of similar complexity. EMC aspects are not covered, since these are dealt with by IEC Guide 107. 2 Normative references The following documents, in whole or in part, are normat
33、ively 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. IEC 60950-1:2005, Information technology equipment Safety Part
34、1: General requirements ISO/IEC Guide 51, Safety aspects Guidelines for their inclusion in standards EN 50491-3, General requirements for home and building electronic systems (HBES) and building automation and control systems (BACS) Part 3: Electrical safety requirements 3 Terms and definitions For
35、the purposes of this document, the terms and definitions given in ISO/IEC Guide 51 as well as the following apply. 3.1 home network internal network for digital and analog information transport in a single family dwelling or business premises of similar complexity, providing defined access points an
36、d using any transmission medium in any topology 6 IEC GUIDE 110:2014 IEC 2014 3.2 home control system home network together with all the equipment attached to it, including the rules for control, communication and management among application processes 3.3 application protocol standardized language,
37、 used by application processes to exchange information in a home control system, transported without interpretation by the home network resources 3.4 functional safety ability of a home control system to carry out the actions necessary to achieve and maintain an appropriate level of safety both unde
38、r normal conditions and in case of a fault that might result in a hazard 4 Home control systems A variety of electrically-controlled equipment may be used in homes and similar environments for many different applications. Examples of such applications are: lighting; heating; washing; entertainment (
39、audio/video); energy management; water control; fire alarm; blinds control; garage door openers; different forms of security control (audio/video). When several pieces of equipment are able to interwork via a home network, wired or wireless, the resulting total system is referred to as a home contro
40、l system. A home network may be based on different transmission media (for example, power network, twisted pair, infrared or radio, wireless) and may also be connected to outside networks (for example, telephone networks, cable networks). A home control system will typically first be assembled to co
41、ver certain basic applications, for example control of lighting, heating and ventilation. It may include equipment from different manufacturers. This equipment is, in many cases, the responsibility of different IEC product committees. Furthermore, it is likely that the system will be later extended
42、to cover more applications. In many cases, these extensions will not be made by the person who installed the original system. In a conventional electrical installation system, each function needs its own cable and each control system is a separate network. In contrast, a home electronic system may e
43、nable sensing, switching, control, monitoring and signaling on all functions and sequences by a single wired or wireless connection. The power can be directly connected to a piece of equipment or may be derived from the network. IEC GUIDE 110:2014 IEC 2014 7 A home control system comprises a network
44、 for transmission of signals between pieces of equipment connected to the home network. The equipment is connected via an interface. The interface may be integrated into the equipment. All pieces of equipment connected to the home control system may be able to communicate with one another without th
45、e need for a central computer. The size of the home control system can vary from only a few types up to hundreds of different types of equipment, connected as one system. The home network is intended for general control applications and allows several topologies, as shown in Figure 1. Combinations o
46、f the topologies are possible. 8 IEC GUIDE 110:2014 IEC 2014 IEC 1189/14 Figure 1a Bus topology Equipment IEC 1190/14 Figure 1b Star topology IEC 1191/14 Figure 1c Loop or ring topology IEC 1192/14 Figure 1d Tree topology Figure 1 Examples of possible topologies IEC GUIDE 110:2014 IEC 2014 9 Equipme
47、nt connected to a home network can be powered in different ways, as shown in Figure 2. Mains-powered device Mains Local battery-powered device Home network-powered device Home network IEC 1193/14 Figure 2 Example of different ways of powering equipment 5 Safety aspects 5.1 General considerations The
48、 level of safety of a product, process or service is a balance between freedom from unacceptable risk of harm and other demands, such as suitability for purpose and cost. For determination of the safety requirements, a home control system should be considered as follows: equipment intended for conne
49、ction to the network; network; installation of equipment in the network; system; connection of the home control system to other systems, such as telecom or alarm systems. It is common to the concept of a home control system that the safety aspects are significantly affected by system configuration and installation in addition to the design of the connected equipment. Therefore, guidance for the design, installation, configuration, extension and maint
