本文件规定了农业和林业用拖拉机、自走式骑乘机械以及农业用安装式、半安装式和牵引式机械上控制系统（SRP/CS）安全相关部件的设计和开发的一般原则。它还可以应用于移动市政设备（例如街道清扫机）。 本文件不适用于: -农业用飞机和气垫车； -草坪和花园设备。 本文件规定了SRP/CS执行其安全相关功能所需的特征和类别。它不确定特定应用程序的性能级别。 注1:特定于机器的C类标准可规定其范围内机器安全相关功能的性能水平（AgPL）。否则，AgPL的规格由制造商负责。 本文件适用于安全生产- 电气/电子/可编程电子系统（E/E/PES）的相关部件，因为这些部件与机电系统有关。它涵盖了E/E/PES安全相关系统故障行为可能造成的危害，包括这些系统的相互作用。它不涉及与电击、火灾、烟雾、热、辐射、毒性、易燃性、反应性、腐蚀、能量释放和类似危险有关的危险，除非直接由E/E/PES安全相关系统的故障行为引起。它还包括涉及保护措施、保障措施或安全相关功能的E/E/PES安全相关系统的故障行为，以应对非E/E/PES危险。 本文件范围内的示例包括: -SRP/CS限制混合动力车中的电流，以防止绝缘故障/电击危险； -对SRP/CS的电磁干扰； -SRP/CS设计用于防火。 未包含在本文件范围内的示例: -摩擦导致绝缘失效，导致触电危险； -影响附近机器控制系统的标称电磁辐射； -腐蚀导致电缆过热。 本文件不适用于非E/E/PES系统（如液压、机械或气动）。 注2:有关机械安全的设计原则，另见ISO 12100。 本文件不适用于出版日期前制造的控制系统安全相关部件。

This document sets out general principles for the design and development 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 mobile municipal equipment (e.g. street-sweeping machines). This document is not applicable to: — aircraft and air-cushion vehicles used in agriculture; — lawn and garden equipment. This document specifies the characteristics and categories required of SRP/CS for carrying out their safety-related functions. It does not identify performance levels for specific applications. NOTE 1 Machine specific type-C standards can specify performance levels (AgPL) for safety-related functions in machines within their scope. Otherwise, the specification of AgPL is the responsibility of the manufacturer. This document is applicable to the safety-related parts of electrical/electronic/programmable electronic systems (E/E/PES), as these relate to mechatronic systems. It covers the possible hazards caused by malfunctioning behaviour of E/E/PES safety-related systems, including interaction of these systems. It does not address hazards related to electric shock, fire, smoke, heat, radiation, toxicity, flammability, reactivity, corrosion, release of energy, and similar hazards, unless directly caused by malfunctioning behaviour of E/E/PES safety-related systems. It also covers malfunctioning behaviour of E/E/PES safety-related systems involved in protective measures, safeguards, or safety-related functions in response to non-E/E/PES hazards. Examples included within the scope of this document: — SRP/CS limiting current flow in electric hybrids to prevent insulation failure/shock hazards; — electromagnetic interference with the SRP/CS; — SRP/CS designed to prevent fire. Examples not included in the scope of this document: — insulation failure due to friction that leads to electric shock hazards; — nominal electromagnetic radiation impacting nearby machine control systems; — corrosion causing electric cables to overheat. This document is not applicable to non-E/E/PES systems (e.g. hydraulic, mechanic or pneumatic). NOTE 2 See also ISO 12100 for design principles related to the safety of machinery. This document is not applicable to safety related parts of control systems manufactured before the date of its publication.