Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
23
Chapter 3 Operation
shows the active lenses for the two resolutions of the safety light
curtain.
Figure 11 - Active Lenses for Different Resolutions
Laser Alignment
All 450L-E and 450L PAC safety light curtain transceiver sticks have an
integrated laser alignment system (ILAS). The laser works with visible light,
which makes the alignment of a 450L-E and 450L PAC safety light curtain
system much easier.
The ILAS can be switched on and off by simply placing a finger on the optical
push button, which is located close to the hand symbol on the front window
(see
). As soon as the laser is activated, several red laser
beams are transmitted (see
) from a source close to the
optical push button.
shows the principle operation of the ILAS. The brightest
beam is transmitted perpendicular to the front window, which is also parallel
to the infrared light of the stick. The brightest beam has to be positioned at the
opposite stick at the same level as indicated with distance A in
. The other slanted laser beams must also be targeted between the
optics center and the housing of the opposite stick on the front window. The
quantity of slanted beams on the opposite stick depends on the installation
ATTENTION:
The resolution of a 450L-E safety light curtain system that is
configured with blanking, changes depending on the configuration (see
Blanking and Reduced Resolution on page 28
). Any change in the resolution
must be considered in the safety distance calculation (see
) and in the installation.
Plug-in Cable
First Optical Module
Second Optical Module
Resolution 14 mm (0.55 in.)
Resolution 30 mm (1.18 in.)
Resolution
[mm (in.)]
Lens Number Per Module
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
14 (0.56)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
30 (1.19)
X
—
X
—
X
—
X
—
X
—
X
—
X
—
X
—
IMPORTANT
The gap (approximately 1.5 mm (0.05 in.) between adjacent modules,
which are red (indicated in
for hand and finger resolution), has
no impact on resolution.
LASER LIGHT HAZARD:
Do not stare into the beam. Each 450L-E and 450L PAC
safety light curtain has a built-in laser alignment system.
LASER CLASS 2 (IEC 60825-1).
Conforms to 21 CFR 1040.10.
