本文件提供了确定ISO 6165中定义的土方机械（EMM）所需性能水平的方法。 机器控制系统安全分析（MCSSA）确定安全控制系统（SCS）所需的与控制系统相关的危险的风险降低量。这种降低通过机器性能水平（MPL）进行量化，使用ISO 12100中定义的风险评估原则或其他方法识别危险。 注1:附录A中所示的步骤2证明了ISO 12100和ISO 19014之间作为补充保护措施的关系。 注2:ISO 19014还可用于评估其他越野移动机械的功能安全要求。 对于那些确定为安全相关的控制装置，体系结构、硬件、软件环境要求和性能的特征由ISO 19014的其他部分涵盖。 ISO 19014涵盖了安全控制系统故障引起的危险，不包括设备本身引起的危险（例如触电、火灾等）。 不属于安全控制系统（SCS）的其他控制装置（如挡风玻璃雨刮器、前照灯、驾驶室灯等）不在本标准范围内，这些控制装置不能缓解危险或执行控制功能，并且操作员可能会意识到故障。 注3:安全控制系统清单见附录D。 注4:声音警告不包括在诊断范围的要求中。

This document provides a methodology for the determination of performance levels required for earth moving machinery (EMM) as defined in ISO 6165. A Machine Control System Safety Analysis (MCSSA) determines the amount of risk reduction of hazards associated with control systems, required for Safety Control Systems (SCS). This reduction is quantified by the Machine Performance Level (MPL), the hazards are identified using the risk assessment principles as defined in ISO 12100 or by other means. NOTE 1 Step 2 as shown in Annex A demonstrates the relationship between ISO 12100 and ISO 19014 as a complementary protective measure. NOTE 2 ISO 19014 can also be used to assess the functional safety requirements of other off-road mobile machinery. For those controls determined to be safety-related, the characteristics for architecture, hardware, software environmental requirements and performance are covered by other parts in ISO 19014. ISO 19014 covers the hazards caused by the failure of a safety control system and excludes hazards arising from the equipment itself (for example, electric shock, fire, etc.). Other controls that are not safety control systems (SCS), that do not mitigate a hazard or perform a control function and where the operator would be aware of a failure, are excluded from this standard (e.g. windscreen wipers, head lights, cab light, etc.). NOTE 3 A list of safety control systems is included in Annex D. NOTE 4 Audible warnings are excluded from the requirements of diagnostic coverage.