Omron NX-PA Series User Manual page 96

4 Installation and Wiring
Interlock Circuits
When the Controller controls an operation such as the clockwise and counterclockwise operation of a
motor, provide an external interlock such as the one shown in the following example to prevent both the
forward and reverse outputs from turning ON at the same time if required by the application.
Example:
Controller
This circuit prevents outputs MC1 and MC2 from both being ON at the same time even if both Controller
outputs ON_MC1 and ON_MC2 are ON due to a malfunction.
4 - 8
Interlock circuit
MC2
ON_MC1
MC1
MC1
ON_MC2
MC2
Motor clockwise
Motor counterclockwise
NX-series CPU Unit Hardware User's Manual (W535)