Pilz PSSu K F EI CV Operating Manual page 73

Supplementary data
9.1.9.3 Achievable safety level
Monitoring function
SSR-M
SSM
Please note:
Common cause failures (CCF) are possible for the sensor subsystem. An appropriate ana-
lysis must be carried out.
To use proximity switches 1 and 2 we recommend that you:
}
Use different technologies/design or physical principles (e.g. different manufacturers)
and
}
Evaluate the sensor supply via track S
Operating Manual PSSu K F EI CV(-T)
1004290-EN-04
PL in accordance with EN
ISO 13849-1: 2015
PL e (Cat.4)
SIL CL in accordance with
EN IEC 62061
3
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