Safety Light Curtain
67
Valid muting sequence:
Action
Comments
1. Muting start
MS1 is activated first, followed by MS2.
2. Muting active
MS1 and MS2 active, penetration of
the safety field (muting object moves
through ESPE).
The safety field is interrupted, the OSSDs
remain in the ON state.
3. Muting active
MS1, MS2, penetration of the safety
field and MS3 active.
Muting remains active.
4. Muting active
MS1, MS2, penetration of the safety
field, MS3 and MS4 active.
5. Muting active
MS2, penetration of the safety field,
MS3 and MS4 active.
MS1 has become inactive.
6. Muting active
Penetration of the safety field, MS3
and MS4 active.
MS2 has become inactive.
7. Muting active
MS3 and MS4 active.
Safety field is cleared again.
8. Muting end
MS3 or MS4 are inactive or the maxi-
mum muting duration is reached.
Signal path
6
7
8
Muting
active
SF
penetration
Figure 9: Signal path for the 4-sensor linear muting with sequence monitoring
