74 Rockwell Automation Publication 450L-UM001D-EN-P - December 2019
Chapter 6 Installation and Wiring
The effective aperture angle for the 450L-B safety light curtain system is ±2.5° at
a mounting distance of ≥3.0 m (9.8 ft). Calculate the minimum distance to
reflective surfaces depending on the distance between the transmitter and the
receiver, with an aperture angle of 2.5°.
Table 29 - Minimum Distance for Various Distances D Between Transmitter and Receiver
Mirrors
The GuardShield safety light curtains can be used with corner mirrors (see
Corner Mirror on page 198
). Mirrors are only allowed for applications without
undetected access into the protected area.
Figure 37 - Installation Angle for Mirrors (View from the Top)
IMPORTANT Formula: A [mm] = tan 2.5° x D = 43.7 × D [m]
A = Minimum distance to reflective surfaces
D = Distance between transmitter and receiver Or take the appropriate value
from Table 29 on page 74
.
Distance between Transmitter and Receiver
(Range D) [m (ft)]
Minimum Distance A
[mm (in.)]
0.5…3.0 (1.64…9.8) 135 (5.31)
4.0 (13.1) 175 (6.88)
5.0 (16.4) 220 (8.66)
6.0 (19.6) 265 (10.43)
7.0 (22.9) 310 (12.2)
10.0 (32.8) 440 (17.32)
ATTENTION: When using mirrors, all sides of the protective field have to
fulfill the requirements for minimum safety distance and minimum distance
from the reflective surfaces.
The installation angle (IA) must be between 70°<IA<110° otherwise serious
injury or death could result.
Transmitter
Installation
Angle (IA)
Mirror
Dangerous Area
Receiver
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