NF EN ISO 25119-1, U05-150-1 (09/2023)

This document establishes general principles for the design and development of safety-related parts of control systems (SRP/CS) used on agricultural and forestry tractors, on self-propelled ride-on machines and on mounted, semi-mounted machines. -spans and trails used in agriculture. It can also apply to mobile municipal equipment (e.g. cleaning machines). This document does not apply to: — airborne and air-cushioned vehicles used in agriculture, — gardening or horticultural equipment. This document specifies the characteristics and categories required of SRP/CS to perform their safety-related functions. It does not identify performance levels for specific applications. NOTE 1 Machine-specific standards (type C standards) may specify performance levels (AgPL) for safety-related functions in machines within their scope. Otherwise, specification of the AgPL is the responsibility of the manufacturer. This document applies to parts relating to the safety of electrical/electronic/programmable electronic systems (E/E/PES), as they relate to mechatronic systems. It covers possible hazardous phenomena due to the malfunction of safety-related E/E/PES systems, including the interaction between these systems. It does not address hazards associated with the following events: electric shock, fire, fumes, heat, radiation, toxicity, flammability, reactivity, corrosion, release of energy, and similar hazards, unless caused directly by a malfunction of the safety-related E/E/PES systems. It also covers the malfunction of safety-related E/E/PES systems that are involved in protective measures, guards or safety-related functions in response to non-E/E/PES hazards. Examples falling within the scope of this document: — SRP/CS limiting current flow in electric hybrids to prevent dangerous insulation breakdown/shock phenomena; — electromagnetic interference with SRP/CS; — SRP/CS designed to prevent fires. Examples not falling within the scope of this document: — insulation breakdown due to friction which causes electric shock phenomena; — nominal electromagnetic radiation which impacts the surrounding control systems of the machine; — corrosion leading to overheating of electrical cables. This document is not applicable to non-E/E/PES systems (e.g. hydraulic, mechanical and pneumatic). NOTE 2 For design principles relating to machine safety, see also ISO 12100. This document is not applicable to safety-related parts of control systems manufactured before the date of its publication.
(Automatic translation from French)