Safety Light Curtain
47
5.1.4 Minimum Clearance to Reflective Surfaces
DANGER!
Risk of personal injury or property damage with reflective surfaces
within the aperture angle between the emitter and receiver!
The system’s safety function is disabled.
Personal injury and damage to equipment may occur.
• Minimum clearance (m) from reflective surfaces to the optical axis must be adhered to.
m = tan
α
× clearance from emitter to receiver
m = tan 2.5° × clearance from emitter to receiver
m
α
α
!
Danger zone
Reflective
object
Emitter
Receiver
The minimum clearance from reflective surfaces must be calculated depending on the distance between the
emitter and receiver with an aperture angle of ±2.5°.
Distance between the
emitter and receiver [m]
Minimum clearance
m [mm]
Minimum clearance m in m
2
4
6
8
10
12
14
16
18
20
0,10
0,20
0,30
0,40
0,50
0,60
0,70
0,80
0,90
0,131
Range in m
0.25 ... 3.0
131
4
175
5
218
10
437
15
655
20
873
