2 safety-related architecture, 3 achievable safety level, 1 permitted encoder types and output signals – Pilz PNOZ s30 24-240VACDC 2 n/o 2 n/c User Manual
Page 81
Supplementary data
Operating Manual PNOZ s30
1001715-EN-13
81
Safety-related architecture
Sensor
non-safe encoder
Actuator
SRP/CS
Actuator
SRP/CS
Sensor
PNOZ s30
Logic
+
Diagnostic
SRP/CS
Logic
Sensor
proximity switch
To calculate the safety function you will need the following data for the "sensor" subsystem
and "PNOZ s30" subsystem:
Sensor
PNOZ s30 subsystem
Category MTTFd
DC
Operating mode
PFH (1/h)
4
Manufactur-
er-specific
90 % Monitoring
2 encoders
1,44E-09
In a worst case scenario, the sensor subsystem's characteristic value MTTFd is calculated
from the inferior (lower) value of the two sensors.
Achievable safety level
Safety function
PL in accordance with EN
ISO 13849-1: 2006
SIL CL in accordance with
EN IEC 62061
Direction
Position
PL c (Cat. 1)
-
Speed
Speed range
Standstill
PL e (Cat.4)
3
Safety-related characteristic data for operation with 2 proximity
switches
Permitted encoder types and output signals
Non-safety-related rotary encoder
Permitted encoder types:
}
Inductive proximity switches
Permitted output circuits:
}
pnp
}
npn
9.2.8.2
9.2.8.3
9.2.9
9.2.9.1