Safety-Related Architecture; Achievable Safety Level - Pilz PSSu K F EI CV Operating Manual

Supplementary data
9.1.4.2

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 CV(-T)":
Sensor
Category
2
The values for DC refer to the standard EN 61508.
9.1.4.3

Achievable safety level

Monitoring
function
SOS-M
SSR-M
SDI-M
SSM
SS1-M
SS2-M
Position counter value
Operating Manual PSSu K F EI CV(-T)
1004290-EN-04
NOTICE
The signal tracks Cos and Sin must be generated independently. This
means that the sine and cosine signals in the encoder must be conducted in
independent channels, from the optics to the interface.
The two signal tracks must not be generated by a common processor.
One signal may not be derived from the other signal via an electronic circuit.
SRP/CS
Sensor
Sensor
non-safe encoder
MTTFd DC
Manufacturer- 90 % Monitoring
specific
PL of EN ISO 13849-1: 2015
PL d (Cat.2)
SRP/CS
Logic
PSSu K F EI CV
Logic
+
Diagnostic
Subsystem PSSu K F EI CV(-T)
Operating mode
1 sensor
SIL CL in accordance with
EN IEC 62061
2
SRP/CS
Logic
Actuator
PFH (1/h)
1,80E-08
65