Functional safety for your machinery

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Functional safety for complex machine control systems

Everyone who operates your machines should feel safe – that’s why correctly calculated safety functions are so important. Ensure functional safety and reliable control systems even for complex machines. Our experts provide you with practical support in accordance with DIN EN ISO 13849 or the new version ISO 13849-1:2023-04.

For information contact

Team CE/Maschinensicherheit – Axel Martens – Telephone +49 40 5238871-15 –

DIN EN ISO 13849-1 / ISO 13849-1

We evaluate the safety of your machine control system according to DIN EN ISO 13849-1 or the new ISO 13849-1.

  • Determine and define the safety functions
  • Evaluate the requirement Performance Level PLr using the risk graph
  • Evaluate the selected subsystems
  • Calculations of functional safety
  • Calculating the specified safety functions with SISTEMA

Reduce risk

You will receive from us a precise and complete definition of safety functions; this is also required in greater detail under the new ISO 13849-1 than in the old version of the standard. The iterative process of risk assessment and risk reduction according to DIN EN ISO 12100 is the basis for the definition of each safety function.

Determining the Performance Level

We determine the required and achieved Performance Level PLr of your machinery according to the harmonized EU standard DIN EN ISO 13849 – and keep the new version ISO 13849-1:2023-04 in mind for you.

Our goal: The safety-related parts of the control system (SRP/CS) of your machines should fulfill all safety functions as required. Only in this way can the SRP contribute to risk reduction in the operation of your machine or plant.

Integrating subsystems

We advise you on the integration of subsystems within a safety chain, including subsystems with safety integrity levels (SIL).

Together with you, we examine your options for implementing a safety function: integrating subsystems that have already been validated according to a standard for functional safety of machine controls or developing a new subsystem yourself according to DIN EN ISO 13849 or combining subsystems.

New version of the basic safety standard for machine control systems

In spring 2023, the new version of the basic safety standard for machine controls, ISO 13849-1:2023-04 Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design, has been published. Even though the new ISO standard will probably have to wait a little longer for its harmonization as an EU standard under the Machinery Directive or the new Machinery Regulation: Our experts have the standard in their sights and will also advise you in detail on the modernized version.

You can find more on the topic of “Functional Safety” here:

Neufassung ISO 13849-1:2023 ist dicker und freundlicher

Risikobeurteilung nach DIN EN ISO 12100