•
TZ = Tolerance zone of the safe multibeam scanner in millimeters (mm),
•
Z
F
= supplement for lack of ground clearance of the vehicle in millimeters (mm)
•
Z
B
= supplement for the decreasing braking force of the vehicle, from the vehicle
documentation, in millimeters (mm)
4.3.6.5
Calculation example for the protective field width
Calculation example for the protective field width S
B
S
B
= F
B
+ 2 × (TZ + Z
F
)
where:
•
S
B
= protective field width in millimeters (mm)
•
F
B
= vehicle width in millimeters (mm)
•
TZ = Tolerance zone of the safe multibeam scanner in millimeters (mm),
•
Z
F
= supplement for lack of ground clearance of the vehicle in millimeters (mm)
4.3.6.6
Height of the scan plane
Overview
Take into consideration both the minimum and maximum height of the scan plane. You
can use the fixing holes of the safe multibeam scanner as a reference for the scan
plane.
Minimum height
The safe multibeam scanner checks every protective or warning field using a vertical
aperture angle of up to 4°. Calculate the minimum height for the scan plane so that the
protective or warning field is not disturbed by the floor.
h
min
= 0.035 x L
max
+ 30 mm
where:
•
h
min
= minimum height in millimeters (mm)
•
L
max
= maximum length used for protective or warning fields in millimeters (mm)
Table 3: Example values for the minimum height
Maximum length used (mm)
Minimum height (mm)
0
30
1000
65
2000
100
3000
135
4000
170
Maximum height
The scan plane must be at a maximum height of 200 mm everywhere. Otherwise,
persons lying horizontally may not be detected.
In many cases, a mounting height (height of the scan plane) of 150 mm above the floor
is suitable.
PROJECT PLANNING
4
8025990/2021-03-03 | SICK
O P E R A T I N G I N S T R U C T I O N S | scanGrid2 CANopen
25
Subject to change without notice
