Wiring Diagrams for Safety Mode and Safety Pulse Mode

The following wiring diagrams show the output modules in Safety Mode and Safety Pulse Mode.
IMPORTANT:
The Safety level that is shown in the diagrams is applicable to the module itself. Connected devices must have their own status monitoring to achieve application safety level.
IMPORTANT:
You must use an SELV/PELV-listed power supply with the safety modules.
5034-OB8S and 5034-OB8SXT – SIL 3, PLc, Cat. 2 in Single-channel Safety Mode or Safety Pulse Mode
  • n = 0…7
SIL Level and Category
Fault Exclusion
Other
Point Mode
SIL 3, PLc, Cat. 2
None
External connected device must be SIL 3 rated
  • Safety Pulse Mode
  • Safety Mode
    Condition: You must issue at least one safety demand every 6 months.
5034-OB8S and 5034-OB8SXT – SIL 2, PLc, Cat. 2 in Single-channel Safety Mode
  • n = 0…7
SIL Level and Category
Fault Exclusion
Point Mode
SIL 2, PLc, Cat. 2
None
Safety Mode
Condition: You must issue at least one safety demand every 6 months.
5034-OB8S and 5034-OB8SXT – SIL 3, PLe, Cat. 4 in Single-channel Safety Mode or Safety Pulse Mode
  • n = 0…7
SIL Level and Category
Fault Exclusion
Other
Point Mode
SIL 3, PLe, Cat. 4
External Wiring Fault
Use IEC 60947 safety contactor
Safety Pulse Mode
Safety Mode
Condition: You must issue at least one safety demand every 24 hours.
5034-OB8S and 5034-OB8SXT – SIL 3, PLe, Cat. 4 in Dual-channel Safety Pulse Mode or Safety Mode
  • n = 0, 2, 4, 6
  • The channel pairs that support dual-channel mode are:
    • Channel 0, 1 pair
    • Channel 2, 3 pair
    • Channel 4, 5 pair
    • Channel 6, 7 pair
SIL Level and Category
Fault Exclusion
Point Mode
SIL 3, PLe, Cat. 4
None
Safety Pulse Mode
External Wiring Fault
Safety Mode
Condition: You must issue at least one safety demand every 24 hours.
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