Rockwell Automation Publication 450L-UM001D-EN-P - December 2019 81
Installation and Wiring Chapter 6
• For 450L-E only: Check if the beam code feature is a possible option (see
Beam Coding on page 30
).
Figure 48 - Optical Barriers (Ob) Are Required for Adjacent Light Curtains Installations
The transceiver architecture of safety light curtains does not allow a back-to-back
installation of adjacent transmitters as is common with safety light curtain
systems with a pure transmitter and receiver architecture.
Depending on the installed distance, the reduced operating functionality (see
Low Operating Range on page 29
) instead of an optical barrier can be used to
stop optical interference of adjacent GuardShield safety light curtain systems.
For 450L-E safety light curtains only: To stop optical interference between
neighbor 450L-E systems can cause a safety issue, in addition of an optical barrier
the beam code feature (see Beam Coding on page 30
) can be selected. Beam code
changes the pulse pattern of infrared light that a 450L-E safety light curtain stick
emits.
Horizontal Adjacent Pairs
Ob
Ob
Vertical
Adjacent Pairs
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