Pilz PSEN op4F-A-14-180/1 - Manual (Page 9)

OPERATING MANUAL PSEN op4F/H-A series
1003067-EN-02 9
PSEN op4F-A-14-105/1
PSEN op4H-A-30-105/1
1050
PSEN op4F-A-14-120/1
PSEN op4H-A-30-120/1
1200
PSEN op4F-A-14-135/1
PSEN op4H-A-30-135/1
1350
PSEN op4F-A-14-150/1
PSEN op4H-A-30-150/1
1500
PSEN op4F-A-14-165/1
PSEN op4H-A-30-165/1
1650
PSEN op4F-A-14-180/1
PSEN op4H-A-30-180/1
1800
1.2.3 Minimum safety distance
The protective device must be positioned at a specific safety distance (Fig. 3), which
guarantees that the operator cannot reach the danger zone until the hazardous machine
movement has come to a standstill by triggering the light curtain.
In accordance with the standard ISO 13855, this distance depends on 4 factors:
• Response time of the light curtain (the time that elapses between the beams being
effectively interrupted and the OSSD contacts opening).
• Machine’s stopping performance (time that elapses between the light curtain contacts
opening and the hazardous machine movement effectively stopping).
• Light curtain’s resolution
• Approach speed of the object to be detected.
Fig. 3 – Safety distance (vertical)
H1 =
≥ 900 mm at a resolution > 40 mm
H2 =
≤ 300 mm at a resolution > 40 mm
S = Minimum safety distance in mm