ISO 13849 and IEC 62061 - Manufacturing and Machinery

Manufacturing-Specific Functional Safety Standards

ISO 13849-1 and IEC 62061 provide safety requirements and guidance on the principles for the design and integration of safety-related parts of control systems (SRP/CS), including the design of software. Previously, EN 954-1 was used as the functional safety standard for parts of the control system for machine builders and end users. However, as technology advanced, this standard was no longer applicable to the systems and components being developed. It was therefore replaced by ISO 13849-1 and IEC 62061. Whilst ISO 13849-1 and IEC 62061 use different methodologies for the design of safety related control systems, their intention is to mitigate the risk to equivalent levels.

ISO 13849-1

ISO 13849-1 provides safety requirements and guidance on the principles for the design and integration of safety-related parts of control systems (SRP/CS), including the design of software. For these parts of SRP/CS, it specifies characteristics that include the performance level required for carrying out safety functions. It applies to SRP/CS for high demand and continuous mode, regardless of the type of technology and energy used (electrical, hydraulic, pneumatic, mechanical, etc.), for all kinds of machinery. It does not specify the safety functions or performance levels that are to be used in a particular case.

Compliance with the Essential Health and Safety Requirements of the Machinery Directive 2006/42/EC can be demonstrated through the implementation of this standard.

As with other functional safety standards, ISO 13849-1 and IEC 62061 are risk-based standards. Risk assessments are conducted to determine the safety functions required, and the performance level these functions need to mitigate the risks.

IEC 62061

IEC 62061 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.

The standard is concerned only with functional safety requirements intended to reduce the risk of hazardous situations and 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. It does not cover electrical hazards arising from the electrical control equipment itself (e.g., electric shock), or other safety requirements necessary at the machine level such as safeguarding.

Compliance with the Essential Health and Safety Requirements of the Machinery Directive 2006/42/EC can be demonstrated through the implementation of this standard.

TÜV SÜD can help you in your next Functional Safety project

TÜV SÜD offers a wide range of services to support you throughout the design, construction and installation of your electrical equipment. We can work alongside your design and engineering teams to:

• Create a Safety Requirements Specification 
• Determine the required performance level (PLr) or Safety Integrity Level (SIL) for each safety function 
• Assist with design and technical realization of the safety function 
• Evaluate the performance level or achieved SIL considering architecture (e.g., category) component failure rates, diagnostic coverage (DC) and common cause failures (CCF) 
• Complete validation to demonstrate that the combination of subsystems (e.g., SRP/CS) providing each safety function meets all relevant requirements.

In the application of EN ISO 13849-1 and IEC/EN 62061, our experts work to mitigate machinery safety hazards through a comprehensive risk assessment, undertaken in accordance with EN ISO 12100 for the relevant phases of the life cycle of a machine. Whatever your objectives, TÜV SÜD has the skills and experience to help you meet them.