本文件规定了使用ISO 6165中定义的土方机械及其设备中使用的所有能源（如电子、电气、液压、机械）驱动的部件开发和评估安全控制系统（SCS）达到的机器性能水平（MPL）的一般原则。 本文件的原则适用于控制机器运动或缓解危险的机器控制系统（MCS）；根据ISO 19014-1或ISO/TS 19014-5评估此类系统所需的机器性能水平（MPL）。 以下系统不在本文件范围内: —？不影响机器运动的感知系统（例如摄像机和雷达探测器）； —？灭火系统，除非系统激活干扰或激活另一个SCS。 操作员可能意识到故障的其他系统或组件（例如。 g、 挡风玻璃雨刮器、前照灯等），或主要用于保护财产，不包括在本文件中。声音警告不包括在诊断覆盖范围的要求中。 此外，本文件阐述了ISO 12100中定义的重大危险，这些危险通过SCS内的硬件组件得以缓解。 本文件不适用于出版日期之前制造的EMM。

This document specifies general principles for the development and evaluation of the machine performance level achieved (MPL_a) of safety-control systems (SCS) using components powered by all energy sources (e.g. electronic, electrical, hydraulic, mechanical) used in earth-moving machinery and its equipment, as defined in ISO 6165. The principles of this document apply to machine control systems (MCS) that control machine motion or mitigate a hazard; such systems are assessed for machine performance level required (MPL_r) per ISO 19014-1 or ISO/TS 19014-5. Excluded from the scope of this document are the following systems: —？awareness systems that do not impact machine motion (e.g. cameras and radar detectors); —？fire suppression systems, unless the activation of the system interferes with, or activates, another SCS. Other systems or components whereby the operator would be aware of failure (e.g. windscreen wipers, head lights, etc.), or are primarily used to protect property, are excluded from this document. Audible warnings are excluded from the requirements of diagnostic coverage. In addition, this document addresses the significant hazards as defined in ISO 12100 mitigated by the hardware components within the SCS. This document is not applicable to EMM manufactured before the date of its publication.