Omron NJ501-1400 User Manual page 128

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.
ON_MC1
NJ-series
Controller
ON_MC2
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
MC1
Motor clockwise
MC1
MC2 Motor counterclockwise
NJ-series CPU Unit Hardware User's Manual (W500)