8
Safety Function
Hans Turck GmbH & Co. KG | T +49 208 4952-0 | F +49 208 4952-264 | more@turck.com | www.turck.com
5 Safety Function
The devices provide two safe digital SIL3 inputs (FDI) and two SIL3-connectors (FDX), configu-
rable as in- or outputs.
The following devices can be connected to the safety inputs:
■Max. four 2-channel safety switches and sensors
■Contact based switches, e.g. emergency switches, protective door switches
■Sensors with OSSD switch outputs with test pulses
■Sensors with OSSD switch outputs without test pulses
The two safe SIL3 outputs can be used PP- or PM-switching.
Additionally, the DXP-channels (C4 and C5) as well as the second IO-Link port (C7) can be
switched-off safe via the internal outputs FSO0 and FSO1 (see “4.5 Block Diagram” on p.7).
5.1 Safe Status
In the safe state the device outputs are in LOW-state (0).
The inputs report a LOW-state (0) to the logic.
5.2 Fatal Error
The following errors lead to Fatal Error and thus to the safe state:
■Incorrect wiring at the output (e.g. capacitive load, energetic recovery)
■Incorrect power supply
■Strong EMC disturbances
■Internal device error
6 Safety Planning
The operator is responsible for the safety planning.
6.1 Prerequisites
Perform a hazard and risk analysis.
Develop a safety concept for the machine or plant.
Calculate the safety integrity for the complete machine or plant.
Validate the complete system.
6.2 Reaction Time
If the system is operated with higher availability, the max. reaction time is extended (see “6.3
Safety Characteristic Data” on p.9).
In addition to the reaction time in the device, reaction times of the further CIP Safety compo-
nents have to be considered eventually. Please find the respective information in the technical
data of the respective devices.
Further information about the reaction time can be found in the on-line help for the software
“Turck Safety Configurator” (see also “7.2.4 Configuring” on p.12).
