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)

EN 16590-3 provides general principles for the series development, hardware and software of safety-related parts of control systems (SRP/CS) 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 can also be applied to municipal equipment (e.g. street-sweeping machines). It specifies the characteristics and categories required of SRP/CS for carrying 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 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.

Sicherheit von Land- und Forstmaschinen - Sicherheitsbezogene Teile von Steuerungen - Teil 3: Serienentwicklung, Hardware, Software (ISO 25119-3:2010 modifiziert)

Dieser Teil der FprEN 16590 gibt allgemeine Gestaltungsleitsätze für Serienentwicklung, Hardware und Software sicherheitsbezogener Teile von Steuerungen (SRP/CS) in land- und forstwirtschaftlichen Traktoren, selbstfahrenden Aufsitzmaschinen sowie Anbau-, Aufsattel- und Anhängemaschinen für landwirtschaftliche Geräte. Sie kann auch auf kommunale Geräte (z. B. Straßenkehrmaschinen) angewandt werden. Sie beschreibt Merkmale und Kategorien von SRP/CS Systemen, die zur Ausführung sicherheitsrelevanter Funktionen erforderlich sind.
Dieser Teil der FprEN 16590 gilt für sicherheitsbezogene Teile elektrischer/elektronischer/programmierbarer elektronischer Systeme (E/E/PES) als Teil mechatronischer Systeme. Sie schreibt jedoch nicht vor, welche Sicherheitsfunktionen, Kategorien oder Performance Levels für bestimmte Maschinen anzuwenden sind.
Maschinensicherheitsnormen (Typ C-Normen) können entweder Performance Levels und/oder Kategorien selbständig identifizieren oder sie sollten durch den Maschinenhersteller auf Basis einer Risikobeurteilung festgelegt werden.
Sie ist nicht anzuwenden auf nicht-E/E/PES Systeme (z. B. hydraulische, mechanische und pneumatische).

Tracteurs et matériels agricoles et forestiers - Parties des systèmes de commande relatives à la sécurité - Partie 3: Développement en série, matériels et logiciels (ISO 25119-3:2010 modifié)

La présente partie du FprEN 16590 fournit des principes généraux pour le développement en série, les matériels et les logiciels des parties relatives à la sécurité des systèmes de commande (SRP/CS) utilisés sur les tracteurs agricoles et forestiers, sur les machines automotrices à conducteur porté et sur les machines portées, semi-portées et remorquées utilisées en agriculture. Elle peut être également applicable aux équipements municipaux (par exemple machines de balayage des rues). Elle spécifie les caractéristiques et les catégories requises des SRP/CS pour réaliser leurs fonctions de sécurité.
La présente partie du FprEN 16590 est applicable aux parties relatives à la sécurité des systèmes électriques/électroniques/électroniques programmables (E/E/PES). Dans la mesure où celles-ci sont liées aux systèmes mécatroniques, elle ne spécifie ni les fonctions de sécurité ni les catégories censées être utilisées dans un cas particulier.
Les normes spécifiques (normes de type-C) peuvent identifier les niveaux de performance et/ou catégories ou il convient qu’ils soient déterminés par le fabricant de la machine sur la base de l’évaluation du risque.
Elle n'est pas applicable aux systèmes non-E/E/PES (par exemple hydraulique, mécanique et pneumatique).

Traktorji ter kmetijski in gozdarski stroji - Varnostni deli krmilnih sistemov - 3. del: Razvoj serije, strojna in programska oprema (ISO 25119-3:2010, spremenjen)

Standard EN 16590-3 podaja splošna načela za razvoj skupine, strojne in programske opreme za varnostne dele krmilnih sistemov (SRP/CS) za traktorje, ki se uporabljajo v kmetijstvu in gozdarstvu, in za samognane stroje s sedežem ter za priklopne, polpriklopne in vlečene stroje, ki se uporabljajo v kmetijstvu. Uporablja se lahko tudi za komunalno opremo (npr. za pometalne stroje). Določa lastnosti in kategorije, ki so zahtevane za SRP/CS, da lahko ti izvajajo svoje varnostne funkcije. Ta del standarda EN 16590 se uporablja za varnostne dele električnih/elektronskih/programirljivih elektronskih sistemov (E/E/PES), saj so ti povezani z mehatronskimi sistemi. Ne določa, katere varnostne funkcije, kategorije ali ravni delovanja je treba uporabiti za posamezne stroje. Standardi, značilni za stroje (standardi tipa C), lahko določajo ravni zmogljivosti in/ali kategorije oziroma naj bi jih določil proizvajalec stroja glede na oceno tveganja.

General Information

Status
Withdrawn
Public Enquiry End Date
09-Jan-2014
Publication Date
25-May-2014
Withdrawal Date
03-Jan-2019
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
04-Jan-2019
Due Date
27-Jan-2019
Completion Date
04-Jan-2019

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Traktorji ter kmetijski in gozdarski stroji - Varnostni deli krmilnih sistemov - 3. del: Razvoj serije, strojna in programska oprema (ISO 25119-3:2010, spremenjen)Sicherheit von Land- und Forstmaschinen - Sicherheitsbezogene Teile von Steuerungen - Teil 3: Serienentwicklung, Hardware, Software (ISO 25119-3:2010 modifiziert)Tracteurs et matériels agricoles et forestiers - Parties des systèmes de commande relatives à la sécurité - Partie 3: Développement en série, matériels et logiciels (ISO 25119-3:2010 modifié)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)65.060.01Kmetijski stroji in oprema na splošnoAgricultural machines and equipment in general35.240.99IT applications in other fieldsICS:Ta slovenski standard je istoveten z:EN 16590-3:2014SIST EN 16590-3:2014en,fr,de01-julij-2014SIST EN 16590-3:2014SLOVENSKI
STANDARD



SIST EN 16590-3:2014



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE 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 matériels agricoles et forestiers - Parties des systèmes de commande relatives à la sécurité - Partie 3: Développement en série, matériels et logiciels (ISO 25119-3:2010 modifié)
Sicherheit von Land- und Forstmaschinen - Sicherheitsbezogene Teile von Steuerungen - Teil 3: Serienentwicklung, Hardware, Software (ISO 25119-3:2010 modifiziert) 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 bibliographical 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 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 Macedonia, 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
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR 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 ESIST EN 16590-3:2014



EN 16590-3:2014 (E) 2 Contents Page Foreword .4 Introduction .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 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 products . 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 7.3.5 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 SIST EN 16590-3:2014



EN 16590-3:2014 (E) 3 7.5.1 Objectives . 36 7.5.2 General . 36 7.5.3 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 Prerequisites . 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 = 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 assessment . 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 Several 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
SIST EN 16590-3:2014



EN 16590-3:2014 (E) 4 Foreword This document (EN 16590-3:2014) 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 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 such 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 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, 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, Belgium, 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, Switzerland, Turkey and the United Kingdom. SIST EN 16590-3:2014



EN 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/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 systems, 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 safety-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 combine 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/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 structure (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: systematic, 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 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 16590 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, validation, 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 basic 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 safety 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 group of machines. SIST EN 16590-3:2014



EN 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 provisions of that type-C standard take precedence over the provisions of this type-B standard. SIST EN 16590-3:2014



EN 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 tractors 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 carrying 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 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 Normative 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 amendments) 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 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. 4 Abbreviated terms For the purposes of this document, the following abbreviated terms apply. AgPL agricultural performance level AgPLr required agricultural performance level CAD computer-aided design Cat hardware category CCF common-cause failure DC diagnostic coverage DCavg average diagnostic coverage ECU electronic control unit ETA event tree analysis E/E/PES electrical/electronic/programmable electronic systems EMC electromagnetic compatibility SIST EN 16590-3:2014



EN 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 MTTFd mean time to dangerous failure MTTFdC mean time to dangerous failure for each channel PES programmable electronic system QM quality measures RAM random-access memory SOP start of production SRL software requirement level SRP safety-related parts SRP/CS safety-related parts of control systems SRS safety-related system UML unified modelling language. 5 System design 5.1 Objectives The objective is to define a development process for producing a design that fulfils the safety requirements for the entire safety-related system. 5.2 General Safety requirements constitute all requirements aimed at achieving and ensuring functional safety. During the safety life cycle, safety requirements are detailed and specified in ever greater detail at hierarchical levels. The different levels for safety requirements are illustrated in Figure 1. For the overall representation of the procedure for developing safety requirements, see also 5.4. In order to support management of safety requirements, the use of suitable tools for requirements management is recommended. SIST EN 16590-3:2014



EN 16590-3:2014 (E) 9
Key
result
verification
validation a The first of two numbers separated by a slash refer to the respective part of EN 16590, and the second to the clause in that document: 2/6 is EN 16590-2:2014/Clause 6, 3/5 is EN 16590-3:2014/Clause 5, and so on. Figure 1 — Structuring of safety requirements 5.3 Prerequisites Before beginning system design, define the safety-related function requirements, application and operation environment. 5.4 Requirements 5.4.1 Structuring safety requirements The functional safety concept specifies the basic functioning of the safety-related system with which the safety goals are to be fulfilled. The basic allocation of functional safety requirements to the system architecture is specified by the technical safety concept in the form of technical safety requirements. This system architecture is comprised of both hardware and software. The hardware safety requirements refine and solidify the requirements of the technical safety concept. Clause 6 describes how to specify the hardware requirements in detail. The software safety requirements are derived from the requirements of the technical safety concept and the underlying hardware. The requirements for the software defined in Clause 7 shall be taken into account. SIST EN 16590-3:2014



EN 16590-3:2014 (E) 10 This clause specifies the approach to be used in the specification of the safety concept requirements during system design, thereby providing a basis for error-free system design. 5.4.2 Functional safety concept 5.4.2.1 General requirements of functional safety concept Safety functions are normally identified during the system risk analysis, and the functional safety concept document includes the functional safety requirements for the system. The implementation for each safety concept requirement shall consider the following. — Feasibility When listing functional safety requirements, attention shall be paid to the feasibility of the requirement, considering constraints, such as available technology, as well as financial and time resources. The persons in charge of implementation shall understand and accept the technical safety requirements. — Unambiguousness The functional safety requirements shall be formulated as precisely and unambiguously as possible. NOTE A functional safety requirement is unambiguously formulated when it permits only one interpretation by the anticipated readers. — Consistency Functional safety requirements shall not be self-contradicting (internal consist
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