Datasheet

Relays for functional safety
Safety relays PNOZsigma
PNOZ s30
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]
2016-09
879
} 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 en-
coder for control as are processed by the safe evaluation device (important on en-
coders 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 Manufacturer-
specific
90 % Monitoring
1 encoder
2,34E-08
Achievable safety level
Safety function
PL in accordance with EN
ISO 13849-1: 2015
SIL CL in accordance with
ENIEC62061
Speed
Speed range
Direction
Standstill
Position
PL d (Cat. 2) 2