IEC 62061:2021 机械安全.安全相关控制系统的功能安全

标准编号：IEC 62061:2021

中文名称：机械安全.安全相关控制系统的功能安全

英文名称：Safety of machinery - Functional safety of safety-related control systems

发布日期：2021-03-22

标准范围

IEC 62061:2021规定了机器安全相关控制系统(SCS)的设计、集成和验证的要求并提出了建议。它适用于单独或组合使用的控制系统，以在工作时不能用手携带的机器上执行安全功能，包括以协调方式一起工作的一组机器。本文件是IEC 61508（所有部分）框架内的机械行业特定标准。复杂的可编程电子子系统或子系统元件的设计不在本文件的范围内。本行业标准的主体规定了用于高/持续需求模式的安全相关控制系统的设计和验证的一般要求。本文件:-仅涉及旨在降低危险情况风险的功能安全要求；-仅限于直接由机器本身的危险或由以协调方式一起工作的一组机器产生的危险所产生的风险；本文档不涵盖-电气控制设备本身产生的电气危险（例如电击-参见IEC 60204-1）；-机器层面所需的其他安全要求，例如防护；-安全方面的具体措施-参见IEC TR 63074。本文件无意限制或抑制技术进步。IEC 62061:2021取消并取代了2005年发布的第一版、修正案1:20 12和修正案2:20 15。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更:-改变了结构，更新了内容，以反映安全功能的设计过程，-扩展到非电气技术的标准，-更新定义以符合IEC 61508-4，-引入功能安全计划并更新配置管理（条款4），-扩展了参数化要求（第6条），-增加了对安全性要求的引用（第6.8款），-增加了定期检测的要求（第6.9款），-对架构和可靠性计算的各种改进和澄清（第6条和第7条），-从子系统的“SILCL”转移到“最大SIL”(条款7)，-所描述的软件用例，包括需求(条款8)，-增加了软件验证（第8条）和确认活动（第9条）的独立性要求，-附有实例的新资料性附件（附件G），-关于结构典型MTTFD值、诊断和计算方法的新信息附件（附件C、附件D和附件H）。

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 co-ordinated 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 co-ordinated 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).

标准预览图