机械安全 双手控制装置 设计选择原则

[中文适用范围]： 本文件规定了双手控制装置（THCD）的安全要求以及控制驱动装置手动驱动输出信号的依赖性。 本文件描述了 THCD 实现安全性的主要特征，并列出了三种类型的功能特征组合。 它不适用于旨在用作使能设备、保持运行设备或特殊控制设备的设备。 本文件没有指定 THCD 应与哪些机器一起使用。 它还没有规定特定应用应使用哪种类型的双手控制装置。 此外，虽然给出了指导，但没有指定 THCD 和危险区域之间所需的距离（见 8.8）。 本文件提供了 THCD 的设计要求和选择（基于风险评估）指南，包括防止失效、避免故障和合规性验证。 注 1：THCD 仅为其使用者提供保护。 注 2：对于特定机器，双手控制器作为合适的保护装置的适用性可以在 C 型标准中定义。 如果这样的标准不存在或不适当，则风险评估和确定适当的保护措施是机器制造商的责任。 本文件适用于所有 THCD，与所使用的能源无关，包括： ——完全组装好进行安装的 THCD； ——由机器制造商或集成商组装的 THCD。 本文件不适用于其发布之日之前生产的 THCD。 [外文原描述]： This document specifies the safety requirements of a two-hand control device (THCD) and the dependency of the output signal from the actuation by hand of the control actuating devices. This document describes the main characteristics of THCDs for the achievement of safety and sets out combinations of functional characteristics for three types. It does not apply to devices intended to be used as enabling devices, as hold-to-run devices or as special control devices. This document does not specify with which machines THCDs shall be used. It also does not specify which types of two-hand-control device shall be used for a specific application. Moreover, while guidance is given, it does not specify the required distance between the THCD and the danger zone (see 8.8). This document provides requirements for design and guidance on the selection (based on a risk assessment) of THCDs including the prevention of defeat, the avoidance of faults and verification of compliance. NOTE 1 A THCD only offers protection for the person using it. NOTE 2 For specific machines, the suitability of a two-hand control as a suitable protective device can be defined in a type-C standard. If such a standard does not exist or is not appropriate, the risk assessment and determination of suitable protective measures is the responsibility of the manufacturer of the machine. This document applies to all THCDs, independent of the energy used, including: — THCDs which are fully assembled for installation; — THCDs which are assembled by the machine manufacturer or integrator. This document is not applicable to THCDs manufactured before the date of its publication.