Pilz PSEN sc B 5 Series - Multiple Evaluation and Application Examples

Function description
Operating Manual PSEN sc B 5 Series
1004508-EN-02
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4.8 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
Calculation of the overall response time [ 21]) results from
the value of the multiple evaluation and the valid response time (see
Technical
details [ 66]).
4.9 Examples of application
If a violation of the safety zone is detected, the evaluation device switches off the outputs
configured for this. The machine is brought to a safe condition via the connected OSSDs.
If a violation of the warning zone is detected, the actions configured in PSENscanConfigur-
ator are performed. A visual or audible signal can be activated as advance warning.
4.9.1 Horizontal application
[1]
[2]
Fig.: Application example PSEN scan safety laser scanner - horizontal configuration
Legend
[1] Warning zone
[2] Safety zone