Override; Multiple Evaluation - Pilz PSEN sc L 3.0 08-12 Series Operating Manual

Function description
5.15

Override

With the override function, a machine can be restarted even though the safety zone is viol-
ated by material.
The aim is to clear the danger zone of any material that may have accumulated due to a
fault in the operating cycle.
If there is a pallet in the safety zone, for example, and the conveyor can no longer be
switched on because the OSSDs of the safety laser scanner have switched to the OFF
state (because the safety zone is not free), the accumulated material cannot be transported
away from the zone.
Activating the override function allows intervention and enables the conveyor to be restar-
ted.
The override function can be activated for the first two OSSDs each when muting is activ-
ated for these OSSDs.
Condition for the override function
The override function can be started when the following conditions are met:
}
The safety laser scanner is in a safe condition
} At least one muting sensor is active
Automatic ending of override function
The override function is ended automatically when one of the following conditions is met:
}
Muting timeout has elapsed
}
The conditions necessary for activation are no longer present.
}
Max. duration of override function has elapsed: After 120 s, the safety laser scanner
switches back to its normal operating state.
}
No muting sensor is active
}
Safety zone is not violated
5.16

Multiple evaluation

When multiple evaluation is active, an object has to be scanned several times consecut-
ively before the safety laser scanner switches the OSSDs to the OFF state. This reduces
the probability that insects, welding sparks or other particles lead to a shutdown of a plant.
If a multiple evaluation of 4 is configured, an object has to be detected 4 times in succes-
sion in the safety zone, so that the safety laser scanner switches the OSSDs to the OFF
state.
With a multiple evaluation > 2 an allowance has to be made to the response time. The
height of the allowance (see
the value of the multiple evaluation and the valid response time (see
details [
Operating Manual PSEN sc L 3.0/5.5 08-12
1005056-EN-06
Calculation of the overall response time [
121]).
41]) results from
Technical
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