Omron NX1P2 series

5 Installation and Wiring
5 - 42
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
 Units with Ground Terminals
• CPU Unit
• Additional NX Unit Power Supply Unit
• Shield Connection Unit
A Unit that has a ground terminal also has a DIN Track contact plate on the back of the Unit.
The DIN Track contact plate is connected internally to the ground terminal on the Unit.
This means that the ground terminal will be electrically connected to the DIN Track.
Grounding
type
Symbol Function
Functional
Grounding
Functional grounding is done to protect device and system functions, including
prevention of noise from external sources, or prevention of noise from devices
or equipment that could have harmful effects on other devices or equipment.
DIN Track Contact Plates
Side of the Unit
Example: CPU Unit
Protective
ground
terminal
Internally connected in the Unit
DIN Track contact plate