3. Safety Values for Standard Components

Pepperl+Fuchs products evaluated to ISO 13849-1 mostly show a performance level and category in the respective documentation. In other cases (mainly sensors) there are values given in the documentation that allow building a category 3 application by using the devices in redundancy. Electronic devices with programmable electronics are mostly also evaluated to IEC 62061 and claim to have a SILcl which also allows the use within safety applications according to the machinery directive.

As a supplier of functional safety equipment, Pepperl+Fuchs makes it easy to access the relevant values of components already in use. This helps you calculate safety assessments and offers various additional benefits:

• Confirmation of the required Performance Level (PLr) via proven SISTEMA software tool.
• Easy integration of standardized values in the calculation of safety functions, making it easier to quantitatively prove the safe operation of the machine or plant.
• Values are available in different formats.
• Implementation of similar applications can be realized in form of standardized safety functions, so existing data can be reused.

• MTTFd (Mean Time to Dangerous Failure)
• TM (Mission Time)
• DC (Diagnostic Coverage)
• L10h (Nominal service life, for rotary encoders with regards to service life of ball bearings)

The values and calculation procedures have been developed by IFA (Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung).

When the values are available for all components in use, the safety assessment of the machine or plant can follow.

At Pepperl+Fuchs, you have easy access to values of the majority of standard components.

Please refer to the product datasheets for the relevant values. Just enter the model number of the product in the search box on our website.

Additionally, you can download SISTEMA libraries containing the most important product values

Most safety products in our portfolio are available in our Safety Product Selector, which is updated regularly. If you are looking for a product which is not included, please feel free to contact us.