Pilz PNOZ s30 24-240VACDC 2 n/o 2 n/c - Manual (Page 77)

Supplementary data
Operating Manual PNOZ s30
1001715-EN-13
77
} If a maximum error variable is exceeded (set/true comparison) the drive controller must
switch to a fault condition and stop the drive (drag error detection). The error reaction to
drag error detection should be a controlled motor stop.
} Fault detection via the error variable with subsequent shutdown must meet the require-
ments of the safety function, with regard to reaction times for example.
} The drive controller must evaluate the same incremental/sincos signals from the encod-
er for control as are processed by the safe evaluation device (important on encoders
with combined analogue/digital interface).
Safety-related architecture
Sensor
non-safe encoder
Actuator
SRP/CS
Actuator
SRP/CS
Sensor
PNOZ s30
Logic
+
Diagnostic
SRP/CS
Logic
Drive Control
Diagnostic
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)
2 Manufactur-
er-specific
90 % Monitoring
1 encoder
2,34E-08
Achievable safety level
Safety function
PL in accordance with EN
ISO 13849-1: 2006
SIL CL in accordance with
EN IEC 62061
Speed
Speed range
Direction
Standstill
Position PL d (Cat. 2) 2
9.2.5.3
9.2.5.4