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

Supplementary data
9.1.6.3

Achievable safety level

Monitoring
function
SOS-M
SSR-M
SDI-M
SSM
SS1-M
SS2-M
9.1.7 Safety-related characteristic data for operation with a safe encoder
with Z index
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.
9.1.7.1

Permitted sensor types and output signals

Permitted encoder types:
}
Rotary safety-related encoders
}
Linear safety-related encoders
Permitted output signals:
} Square output signals TTL, differential with Z index
}
Square output signals HTL, differential with Z index
}
Sin/Cos output signals 1Vss, reference voltage with Z index
}
Sin/Cos output signals 1Vss, differential with Z index
9.1.7.2

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":
Operating Manual PSSu K F EI
1003303-EN-03
PL of EN ISO 13849-1: 2015
PL e (Cat.4)
SRP/CS
Sensor
Sensor
safe encoder with
track Z
SRP/CS
Sensor
Sensor
safe encoder with
track Z
SIL CL in accordance with
EN IEC 62061
3
SRP/CS
Logic
PNOZ s30
Logic
+
Diagnostic
SRP/CS
Logic
PSSu K F EI
Logic
+
Diagnostic
SRP/CS
Actuator
Actuator
SRP/CS
Logic
Actuator
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