Omron NX-PA Series User Manual page 100

4 Installation and Wiring
Additional Information
A Controller must be mounted on DIN Track.
It cannot be mounted with screws.
 Wiring Ducts
Whenever possible, route I/O wiring through wiring ducts.
Install mounting bracket so that it is easy to fish wire from the I/O Units through the duct. It is handy
to have the duct at the same height as the CPU Rack.
Duct
20 mm min.
Unit
20 mm min.
Duct
Additional Information
If you want to attach or remove the Fan Unit of CPU Unit while the CPU Rack remains mounted
on the control panel, ensure at least 50 mm between the tops of CPU Unit and the wiring duct.
Duct
CPU
Unit
Duct
 Wiring Duct Example
30 mm
4 - 12
DIN Track
50 mm min.
DIN Track
20 mm min.
30 mm
40 mm
Duct
100 mm
CPU
Rack
Mounting
bracket
Other
devices
NX-series CPU Unit Hardware User's Manual (W535)