Supplement Z
R
for reflection-based measurement errors
All devices: If there is a retroreflector in the vicinity of the protective device (distance of
the retroreflector from protective field ≤ 6 m), you must take the supplement Z
R
=
350 mm into account.
Supplement Z
F
for lack of ground clearance
This supplement is necessary, because, generally, a person is detected above the foot
and so the braking process cannot take account of the length of the foot in front of the
point of detection. A person’s foot could be injured if a vehicle has no ground clearance,
for lack of ground clearance", page 42
.
Calculation example for the protective field width S
B
S
B
= F
B
+ 2 × (TZ + Z
R
+ Z
F
)
where:
•
S
B
= protective field width in millimeters (mm)
•
F
B
= vehicle width in millimeters (mm)
•
TZ = tolerance range of the safety laser scanner,
•
Z
R
= supplement for reflection-based measurement errors in millimeters (mm)
•
Z
F
= supplement for lack of ground clearance of the vehicle in millimeters (mm)
NOTE
In many cases, the safety laser scanner is mounted in the center of the vehicle. If this is
not the case, you must define the protective field asymmetrically. Make sure that the
supplements are located on the right and left of the vehicle.
4.4.6.3
Height of the scan plane
DANGER
Hazard due to lack of effectiveness of the protective device
Persons and parts of the body to be protected may not be recognized in case of non-
observance.
b
Mount the safety laser scanner so that the maximum scan plane height is
200 mm.
People who are lying down are reliably detected if the scan plane is at a height of no
more than 200
mm.
In many cases, a mounting height of 150
mm above the floor (height of the scan plane)
is suitable.
PROJECT PLANNING
4
8023152/160F/2019-11-14 | SICK
O P E R A T I N G I N S T R U C T I O N S | outdoorScan3 Core I/O
45
Subject to change without notice
