机械安全 安全相关设备的功能安全 电气、电子和可编程电子控制系统

[中文适用范围]： 本国际标准规定了机器安全相关控制系统（SCS）的设计、集成和验证的要求和建议。适用于单独或组合使用以执行机器安全功能的控制系统，这些机器在工作时不是由手便携式操作，包括协同工作的一组机器。本文件是IEC 61508（所有部分）框架内的机械行业特定标准。本文件不涉及复杂可编程电子子系统或子系统元件的设计，这部分属于IEC 61508或其关联标准的范畴。本行业标准的主体部分规定了用于高/连续需求模式的 intended to be used 的安全相关控制系统的设计验证的一般要求。本文件仅涉及旨在减少危险情况风险的-functional safety requirements。本文件仅限于直接源于机器本身危险或协同工作的一组机器危险的风险。本文件不涵盖由电气控制设备本身引起的电气危险（如电击-见IEC 60204-1）；机器级别所需的其他安全要求（如防护装置）；安全方面的具体措施-见IEC TR 63074。本文件无意限制或阻碍技术进步。 [外文原描述]： IEC 62061:2021 specifies requirements and makes recommendations for the design, integration and validation of safety-related control systems (SCS) for machines. It is applicable to control systems used, either singly or in combination, to carry out safety functions on machines that are not portable by hand while working, including a group of machines working together in a coordinated manner. This document is a machinery sector specific standard within the framework of IEC 61508 (all parts). The design of complex programmable electronic subsystems or subsystem elements is not within the scope of this document. The main body of this sector standard specifies general requirements for the design, and verification of a safety-related control system intended to be used in high/continuous demand mode. This document: – is concerned only with functional safety requirements intended to reduce the risk of hazardous situations; – is restricted to risks arising directly from the hazards of the machine itself or from a group of machines working together in a coordinated manner; This document does not cover – electrical hazards arising from the electrical control equipment itself (e.g. electric shock - see IEC 60204-1); – other safety requirements necessary at the machine level such as safeguarding; – specific measures for security aspects – see IEC TR 63074. This document is not intended to limit or inhibit technological advancement. IEC 62061:2021 cancels and replaces the first edition, published in 2005, Amendment 1:2012 and Amendment 2:2015. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – structure has been changed and contents have been updated to reflect the design process of the safety function, – standard extended to non-electrical technologies, – definitions updated to be aligned with IEC 61508-4, – functional safety plan introduced and configuration management updated (Clause 4), – requirements on parametrization expanded (Clause 6), – reference to requirements on security added (Subclause 6.8), – requirements on periodic testing added (Subclause 6.9), – various improvements and clarification on architectures and reliability calculations (Clause 6 and Clause 7), – shift from "SILCL" to "maximum SIL" of a subsystem (Clause 7), – use cases for software described including requirements (Clause 8), – requirements on independence for software verification (Clause 8) and validation activities (Clause 9) added, – new informative annex with examples (Annex G), – new informative annexes on typical MTTFD values, diagnostics and calculation methods for the architectures (Annex C, Annex D and Annex H).