# performance level (SIL) (PL)

The term Performance Level was coined by ISO and stands for the average probability of a failure of safety-relevant systems.

The performance level of robots is described by the classes d and e. Class d means that the probability of failure is between 10^-7 and 10^-6. This means that class-d robots fail every 10^6 and 10^7 hours. For class-e robots, the values are one power of ten higher, i.e. between 10^7 and 10^8` hours.

These are the minimum performance levels specified in ISO 10218-2.

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 Englisch: performance level (SIL) - PL Updated at: 21.01.2022 #Words: 80 Links: international organization for standardization (ISO), performance, level, class, power (P) Translations: DE Sharing: