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PSEN opII3B Series
t
4
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
}
EN ISO 13855
this distance depends on three factors:
}
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)
}
Machine's stopping time
Time between the OSSDs changing to the OFF state and the hazardous machine move-
ment stopping (including the reaction time of the connected relay)
}
Approach speed
The speed with which the object to be detected is nearing the danger zone in mm/s
Operating Manual PSEN opII3B Series
1004845-EN-02
Time between the protected field being enabled and the OSSDs changing to
the ON state
}
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
}
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 [
42])
(see Minimum distance between parallel,
18]).
Connector pin assignment [
29]).
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