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3.1.4 Fitting the device, grounding
Install the system in a dry and clean area to protect the switch to
get exposed with dirt.
Plug the connector to the power supply plug then turn on the power
supply.
Ground
The chassis is grounded via a separate ground nut (M3).
Use toothed locking washers for a good electrical connection.
Ground screw of IPES-5408T switch
3.1.5 Connect the M12 connector with RJ-45 data cable, ports are not
used shall be caped that comes with the package to insulate the
surrounding.