Pilz PSEN sc ME 5.5 08-17 - Page 30

Project configuration
Operating Manual PSEN sc ME 5.5 08-17
1005388-EN-01
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S Minimum distance in mm, measured from the start of the protective zone to the
danger source
K Approach speed with which the object to be detected is nearing the danger zone in
mm/s
K = 1600 mm/s when S > 500 mm
K = 2000 mm/s when S ≤ 500 mm
t
1
Overall response time of the safety laser scanner in seconds (see Calculation of the
overall response time [ 34])
Time between the violation of a protective zone and signal change at the OSSD out-
put on the safety laser scanner
t
2
Machine's stopping time in seconds
The time required for the machine to stop after the signal at the OSSD output
changes
C Additional distance depending on the height of the scanning plane and the detection
capability
Z
T
General safety allowance = 150mm
Z
R
Allowance when installing near intense light sources or reflective surfaces (see Dis-
tance to intense light sources and to reflective surfaces [ 40])
Determining the additional distance C depending on the height of the scanning plane
and the detection capability (see ENISO13855)
C = (1200 -0.4H)
Please note:
} Permitted height H of the scanning plane
d = Resolution (see Technical details [ 115])
d
r
= lowest permitted resolution
– Max. 1000 mm
– Min. h = 15(d-50) for d ≥ 70 mm
The height H must not be less than 0.
– If the height of the scan plane is specified, the lowest permitted resolution d
r
can be
calculated.
d
r
= H/15 + 50
} When the safety laser scanner is to be placed at a height of H>300mm, there is a risk of
creeping underneath the safety zone. This is to be taken into account in the risk assess-
ment, and if required additional protective measures must be taken.