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1、BSI Standards PublicationBS EN 16590-3:2014Tractors and machinery foragriculture and forestry Safety-related parts of controlsystemsPart 3: Series development, hardware andsoftware (ISO 25119-3:2010 modified)BS EN 16590-3:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implemen

2、tation of EN 16590-3:2014.It is derived from ISO 25119-3:2010. It supersedes BS ISO 25119-3:2010 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee AGE/6, Agricultural tractors and forestry machinery.A list of organizations represented on this committee ca

3、n beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 82330 5ICS 35.240.99; 65.060

4、.01Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2014.Amendments issued since publicationDate Text affectedBS EN 16590-3:2014EUROPEAN STANDARD NORME EUR

5、OPENNE EUROPISCHE NORM EN 16590-3 April 2014 ICS 35.240.99; 65.060.01 English Version Tractors and machinery for agriculture and forestry - Safety-related parts of control systems - Part 3: Series development, hardware and software (ISO 25119-3:2010 modified) Tracteurs et matriels agricoles et fores

6、tiers - Parties des systmes de commande relatives la scurit - Partie 3: Dveloppement en srie, matriels et logiciels (ISO 25119-3:2010 modifi) Sicherheit von Land- und Forstmaschinen - Sicherheitsbezogene Teile von Steuerungen - Teil 3: Serienentwicklung, Hardware, Software (ISO 25119-3:2010 modifizi

7、ert) This European Standard was approved by CEN on 23 February 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographic

8、al references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility

9、of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of M

10、acedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION

11、EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16590-3:2014 EBS EN 16590-3:2014EN 16590-3:2014 (E) 2 Contents Page Foreword 4 Int

12、roduction .5 1 Scope 7 2 Normative references 7 3 Terms and definitions .7 4 Abbreviated terms .7 5 System design 8 5.1 Objectives .8 5.2 General 8 5.3 Prerequisites 9 5.4 Requirements .9 5.4.1 Structuring safety requirements 9 5.4.2 Functional safety concept . 10 5.4.3 Technical safety concept . 11

13、 6 Hardware 13 6.1 Objectives 13 6.2 General . 13 6.3 Prerequisites . 14 6.4 Requirements 14 6.5 Hardware categories 15 6.6 Work products . 16 7 Software . 16 7.1 Software development planning . 16 7.1.1 Objectives 16 7.1.2 General . 17 7.1.3 Prerequisites . 17 7.1.4 Requirements 17 7.1.5 Work produ

14、cts . 20 7.2 Software safety requirements specification 20 7.2.1 Objectives 20 7.2.2 General . 20 7.2.3 Prerequisites . 20 7.2.4 Requirements 21 7.2.5 Work products . 24 7.3 Software architecture and design . 24 7.3.1 Objectives 24 7.3.2 General . 24 7.3.3 Prerequisites . 24 7.3.4 Requirements 24 7.

15、3.5 Work products . 27 7.4 Software module design and implementation . 27 7.4.1 Objectives 27 7.4.2 General . 27 7.4.3 Prerequisites . 27 7.4.4 Requirements 27 7.4.5 Work products . 36 7.5 Software module testing 36 BS EN 16590-3:2014EN 16590-3:2014 (E) 3 7.5.1 Objectives 36 7.5.2 General . 36 7.5.3

16、 Prerequisites 36 7.5.4 Requirements . 36 7.5.5 Work products . 44 7.6 Software integration and testing . 44 7.6.1 Objectives 44 7.6.2 General . 44 7.6.3 Prerequisites 45 7.6.4 Requirements . 45 7.6.5 Work products . 46 7.7 Software safety validation 47 7.7.1 Objectives 47 7.7.2 General . 47 7.7.3 P

17、rerequisites 47 7.7.4 Requirements . 47 7.7.5 Work products . 49 7.8 Software-based parameterisation 49 7.8.1 Objective. 49 7.8.2 General . 49 7.8.3 Prerequisites 49 7.8.4 Requirements . 50 7.8.5 Work products . 50 Annex A (informative) Example of agenda for assessment of functional safety at AgPL =

18、 e . 52 A.1 Functions of system 52 A.2 Hardware 52 A.3 Safety concept . 52 A.4 Safety analysis and safety data . 52 A.5 Safety design process for phases of life cycle 52 A.6 Software development 53 A.7 Verification and testing . 53 A.8 Documentation and safety documentation. 53 A.9 Summary and asses

19、sment . 53 Annex B (informative) Independence by software partitioning 54 B.1 General . 54 B.2 Terms, definitions and abbreviated terms 54 B.3 Objectives 56 B.4 General . 57 B.5 Requirements . 57 B.5.1 General requirements . 57 B.5.2 Several partitions within a single microcontroller . 57 B.5.3 Seve

20、ral partitions within the scope of a micro-controller network 60 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Machinery Directive 2006/42/EC . 63 Bibliography 64 BS EN 16590-3:2014EN 16590-3:2014 (E) 4 Foreword This document (EN 16590-3:2014

21、) has been prepared by Technical Committee CEN/TC 144 “Tractors and machinery for agriculture and forestry”, the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest

22、 by October 2014, and conflicting national standards shall be withdrawn at the latest by October 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all suc

23、h patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this

24、 document. EN 16590 Tractors and machinery for agriculture and forestry Safety-related parts of control systems consists of the following parts: Part 1: General principles for design and development Part 2: Concept phase Part 3: Series development, hardware and software Part 4: Production, operation

25、, modification and supporting processes The modifications to ISO 25119-3:2010 are indicated by a vertical line in the margin. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Bel

26、gium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switz

27、erland, Turkey and the United Kingdom. BS EN 16590-3:2014EN 16590-3:2014 (E) 5 Introduction EN 16590 sets out an approach to the design and assessment, for all safety life cycle activities, of safety-relevant systems comprising electrical and/or electronic and/or programmable electronic systems (E/E

28、/PES) on tractors used in agriculture and forestry, and on self-propelled ride-on machines and mounted, semi-mounted and trailed machines used in agriculture. It is also applicable to municipal equipment. It covers the possible hazards caused by the functional behaviour of E/E/PES safety-related sys

29、tems, as distinct from hazards arising from the E/E/PES equipment itself (electric shock, fire, nominal performance level of E/E/PES dedicated to active and passive safety, etc.). The control system parts of the machines concerned are frequently assigned to provide the critical functions of the safe

30、ty-related parts of control systems (SRP/CS). These can consist of hardware or software, can be separate or integrated parts of a control system, and can either perform solely critical functions or form part of an operational function. In general, the designer (and to some extent, the user) will com

31、bine the design and validation of these SRP/CS as part of the risk assessment. The objective is to reduce the risk associated with a given hazard (or hazardous situation) under all conditions of use of the machine. This can be achieved by applying various protective measures (both SRP/CS and non-SRP

32、/CS) with the end result of achieving a safe condition. EN 16590 allocates the ability of safety-related parts to perform a critical function under foreseeable conditions into five performance levels. The performance level of a controlled channel depends on several factors, including system structur

33、e (category), the extent of fault detection mechanisms (diagnostic coverage), the reliability of components (mean time to dangerous failure, common-cause failure), design processes, operating stress, environmental conditions and operation procedures. Three types of failures are considered: systemati

34、c, common-cause and random. In order to guide the designer during design, and to facilitate the assessment of the achieved performance level, EN 16590 defines an approach based on a classification of structures with different design features and specific behaviour in case of a fault. The performance

35、 levels and categories can be applied to the control systems of all kinds of mobile machines: from simple systems (e.g. auxiliary valves) to complex systems (e.g. steer by wire), as well as to the control systems of protective equipment (e.g. interlocking devices, pressure sensitive devices). EN 165

36、90 adopts a risk-based approach for the determination of the risks, while providing a means of specifying the required performance level for the safety-related functions to be implemented by E/E/PES safety-related channels. It gives requirements for the whole safety life cycle of E/E/PES (design, va

37、lidation, production, operation, maintenance, decommissioning), necessary for achieving the required functional safety for E/E/PES that are linked to the performance levels. The structure of safety standards in the field of machinery is as follows. a) Type-A standards (basic safety standards) give b

38、asic concepts, principles for design and general aspects that can be applied to machinery. b) Type-B standards (generic safety standards) deal with one or more safety aspect(s), or one or more type(s) of safeguards that can be used across a wide range of machinery: type-B1 standards on particular sa

39、fety aspects (e.g. safety distances, surface temperature, noise); type-B2 standards on safeguards (e.g. two-hands controls, interlocking devices, pressure sensitive devices, guards). c) Type-C standards (machinery safety standards) deal with detailed safety requirements for a particular machine or g

40、roup of machines. BS EN 16590-3:2014EN 16590-3:2014 (E) 6 This part of EN 16590 is a type-B1 standard as stated in EN ISO 12100. For machines which are covered by the scope of a machine specific type-C standard and which have been designed and built according to the provisions of that standard, the

41、provisions of that type-C standard take precedence over the provisions of this type-B standard. BS EN 16590-3:2014EN 16590-3:2014 (E) 7 1 Scope This part of EN 16590 provides general principles for the series development, hardware and software of safety-related parts of control systems (SRP/CS) on t

42、ractors used in agriculture and forestry, and on self-propelled ride-on machines and mounted, semi-mounted and trailed machines used in agriculture. It can also be applied to municipal equipment (e.g. street-sweeping machines). It specifies the characteristics and categories required of SRP/CS for c

43、arrying out their safety functions. This part of EN 16590 is applicable to the safety-related parts of electrical/electronic/programmable electronic systems (E/E/PES), as these relate to mechatronic systems. It does not specify which safety functions, categories or performance levels are to be used

44、for particular machines. Machine specific standards (type-C standards) can identify performance levels and/or categories or they should be determined by the manufacturer of the machine based on risk assessment. It is not applicable to non-E/E/PES systems (e.g. hydraulic, mechanic or pneumatic). 2 No

45、rmative references The following documents, in whole or in part, are normatively 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 amendment

46、s) applies. EN 16590-1:2014, Tractors and machinery for agriculture and forestry Safety-related parts of control systems Part 1: General principles for design and development EN 16590-2:2014, Tractors and machinery for agriculture and forestry Safety-related parts of control systems Part 2: concept

47、phase EN 16590-4:2014, Tractors and machinery for agriculture and forestry Safety-related parts of control systems Part 4: Production, operation, modification and supporting processes 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 16590-1:2014 apply.

48、 4 Abbreviated terms For the purposes of this document, the following abbreviated terms apply. AgPL agricultural performance level AgPLrrequired agricultural performance level CAD computer-aided design Cat hardware category CCF common-cause failure DC diagnostic coverage DCavgaverage diagnostic cove

49、rage ECU electronic control unit ETA event tree analysis E/E/PES electrical/electronic/programmable electronic systems EMC electromagnetic compatibility BS EN 16590-3:2014EN 16590-3:2014 (E) 8 EUC equipment under control FMEA failure mode and effects analysis FMECA failure mode effects and criticality analysis EPROM erasable programmable read only memory FSM functional safety management FTA fault tree analysis HAZOP hazard and operability study HIL hardware in the loop MTTF mean time to failure MTTFdmean time to dangerous failure MTTFdCmean time