Pilz PSEN ml b 1.1 Operating Manual page 16

Function description
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Operation with active use of the Safety Device Diagnostics
– Activate/deactivate the guard locking by a combination of a Safety Device Diagnostics
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Operation with specified direction when activating/deactivating guard locking
A specified direction can be used to control switching of the guard locking status.
– Toggle: The safety switch changes the guard locking status (activated <-> deactiv-
– Force direction: The safety switch is selectively activated or deactivated by offset ac-
Timing diagrams
Fig.: Active use of Safety Device Diagnostics
Legend
Operating Manual PSEN ml b 1.1/2.1/2.2, PSEN ml DHM
1005444-EN-02
command and the status of the safety inputs S31 and S41 (S31 and S41 must have a
high signal).
The safety requirements are guaranteed by the signals S31 and S41 (the fieldbus for
Safety Device Diagnostics communication is not safe).
ated) each time S31 and S41 are activated simultaneously.
tivation of the rising edges at S31 and S41.
SDD command guard locking
Guard locking
[1] Gate is open
[2] Gate is closed
[3] Guard locking is activated by the safety control system
[4] Guard locking is activated
[5] Execution of the hazardous machine function is permitted
[6] Outputs will be deactivated
[7] Guard locking will be deactivated
[8] Gate is open
[t1] Processing time of guard locking signal = 100 ms
Y1
S31 + S41
Actuator
Y32
12 + 22
[t1]
[1] [2]
[5]
[t1]
[t2] [t2]
[3] [4] [6] [7] [8]
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