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PSEN opII4B Series
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Operation of two safety light curtains with the same alignment
Two adjacent safety light curtains with the same alignment can be operated, without the
two safety light curtains influencing each other
aligned safety light curtains [
For the correct function of the two safety light curtains, a beam coding of the safety light
curtains is required. The beam coding is performed via the connection of the safety light
curtain to the supply voltage (see
Project configuration
Maintaining the safety distance
The minimum distance of the safety light curtain to the dangerous machine component
should be such that the operator cannot reach the danger zone until the movement of the
dangerous machine part has stopped.
In accordance with the standard
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EN ISO 13855
this distance depends on three factors:
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Response time of the safety light curtain
Time between the beams being interrupted and the OSSDs changing to the OFF state
(see
When beam coding is used, the response time is increased (see Technical Details)
Operating Manual PSEN opII4B Series
1005005-EN-02
Protected field is clear again, fault check is restarted
OSSDs in the ON state
Check is begun to determine whether the protected field is clear and whether
there are faults
Response time (coded/uncoded), until OSSDs switch to the OFF state (see
Technical details [
Minimum time that the OSSDs remain in the OFF state: 80 ms
Time between the protected field being enabled and the OSSDs changing to
the ON state
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Without beam coding
– If a synchronisation beam pair is interrupted: Response time (without
beam coding) + 10 ms
– If both synchronisation beam pairs (first and last light beam pair) are in-
terrupted: max. 1 s
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With beam coding
– If a synchronisation beam pair is interrupted: Response time (with beam
coding) + 10 ms
– If both synchronisation beam pairs (first and last light beam pair) are in-
terrupted: max. 2 s
Technical details [
43])
43])
(see Minimum distance between parallel,
18]).
Connector pin assignment [
29]).
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