NOTE
DEVICE POSITIONING AND MINIMUM DISTANCE CALCULATIONS
INSTRUCTION MANUAL
17
Example of additional distance due to Height:
With a given machine stopping time of 0.4 s and a selected Laser Sentinel Response
Time of 62 ms, detection capability = 70 mm and without any ambient interference:
S = [(1600 mm/s*(0.062 s+0.4 s)] + [(1200 mm – 0.4H) + 100 mm + 0 mm]
If H = H
MIN
= 300 mm then C
HEIGHT
= 1080 mm
S = [739.2 mm] + (1080 mm + 100 mm + 0 mm) = 1919.2 mm
If H =
1000 mm then C
HEIGHT
= 800 mm
S = [739.2 mm] + (800 mm + 100 mm + 0 mm) = 1639.2 mm
Figure 5 - Safety distance
For horizontal applications the minimum safety distance also depends on
the height of the nominal scan plane for the safety area. As the height H is
reduced, the total additional distance C is increased.
WARNING
If the scan plane is higher than 300mm, ensure that people cannot reach
the hazardous area by crawling underneath the scan plane!
WARNING
If the scan plane is lower than 300mm, a 40mm resolution should be used
to guarantee the effectiveness of the protective device.
WARNING
In case of dynamic applications (e.g. AGVs), the laser scanner must be
mounted at a max. scan plane height of 200mm. Additional distances must
be taken into account considering the stopping distance and the character-
istics of the vehicle.
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