88 Rockwell Automation Publication 450L-UM001D-EN-P - December 2019
Chapter 6 Installation and Wiring
Electrical Installation
The machine system could inadvertently start up while you are connecting the
devices if power is not removed.
Plug-ins
To assemble a 450L safety light curtain system two 450L safety light curtain
sticks (two 450L-B sticks or two 450L-E sticks) — one transmitter and one
receiver plug-in — are required. Instead of one transmitter and one receiver plug-
in, two universal plug-ins can be used. Unpack the plug-ins and set the DIP
switches according to the required functional settings. Remove the red slot cover
from the 450L-B or 450L-E safety light curtain stick and insert the connection
plug-in. Remove the gray slot cover from the 450L-E safety light curtain to insert
a cascading plug-in if necessary.
ATTENTION: Remove power from the entire machine/system line.
ATTENTION: Make sure that the entire system power is disconnected during
the electrical installation.
IMPORTANT The connection and the cascading plug-ins are mechanically coded. It is not
easy to insert a connection plug-in into the slot for the cascading plug-in
and vice versa.
Do not insert plug-ins more than 100 times in one GuardShield safety light
curtain stick.
ATTENTION: To avoid pollution or contamination, the installation of a plug-
in into a stick must be implemented in a dry and clean area. Make sure that
the rubber seal at the plug-in does not get out of place when the plug-in is
inserted in the light curtain.
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