Example
4
2
5
3
1
6
7
8
9
ß
à
á
4
â
Figure 40: Protective field in narrow aisle
1
Width of the narrow aisle
2
Distance between protective field and front of the rack = distance between test object
and front of the rack
3
4
Rack
5
Test object
6
Safety laser scanner
7
L
SLS
= maximum distance from the mounting position of the safety laser scanner to the
leading edge of the industrial truck or load
8
S
A
= stopping distance
9
Z
B
= supplement for the decreasing braking force of the vehicle
ß
Z
F
= supplement for lack of ground clearance of the vehicle
à
Z
R
= supplement for reflection-related measurement errors
á
T
Z
= tolerance zone of the safety laser scanner
â
S
L
= protective field length
Assumed values:
•
S
A
= 3850 mm
6)
•
TZ = 100 mm (device with max. protective field range 9.0 m)
•
Z
R
= 350 mm (reflectors (reference targets) in scan plane, due to use of collision
•
Z
F
= 0 mm (sufficient ground clearance)
•
Z
B
= 0 mm (already considered in S
A
)
•
Width of the narrow aisle = 2400 mm
•
Distance between safety laser scanner and front of the rack = 1200 mm
•
Distance between protective field and front of the rack: 100 mm
6)
Stopping distance at maximum load = 3500 mm, factor for wear of brakes = 1.1
4
PROJECT PLANNING
56
O P E R A T I N G I N S T R U C T I O N S | microScan3 – PROFINET
8021219/1ELL/2022-01-21 | SICK
Subject to change without notice
