Achievable Safety Level; Safety-Related Characteristic Data For Operation With A Safe Encoder; Permitted Sensor Types And Output Signals; Safety-Related Architecture - Pilz PSSu K F EI Operating Manual

Supplementary data
9.1.5.4

Achievable safety level

Monitoring
function
SOS-M
SSR-M
SDI-M
SSM
SS1-M
SS2-M
9.1.6

Safety-related characteristic data for operation with a safe encoder

Safe encoders are certified in accordance with EN 61508, EN 13849 and EN 62061. In or-
der to achieve the safety level stated by the encoder, the safe evaluation device (PSSu K F
EI) must normally detect designated errors. Details of the safe encoder's requirements of
the evaluation device can be found in the user documentation for the safe encoder. The en-
coder and evaluation device must be compatible.
9.1.6.1

Permitted sensor types and output signals

Permitted encoder types:
}
Rotary safety-related encoders
} Linear safety-related encoders
Permitted output signals:
}
Sin/Cos output signals 1Vss, reference voltage
} Sin/Cos output signals 1Vss, differential
9.1.6.2

Safety-related architecture

To calculate the safety function you will need the following data for the "sensor" subsystem
and the subsystem "PSSu K F EI":
Sensor
PL
See manufacturer
Operating Manual PSSu K F EI
1003303-EN-03
PL of EN ISO 13849-1: 2015
PL d (Cat.2)
SRP/CS
Sensor
Sensor
safe encoder
SIL PFH (1/h)
SIL CL in accordance with
EN IEC 62061
2
SRP/CS
Logic
PSSu K F EI
Logic
+
Diagnostic
Subsystem PSSu K F EI
Operating mode
Monitoring
Safe sensor
SRP/CS
Logic
Actuator
PFH (1/h)
2,35E-09
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