Omron · NJ/NX-series Machine Automation Controller
An error was detected by the self-diagnosis of the safety function. This suggests a problem with the internal safety monitoring system of the device, which could be triggered by noise or a hardware malfunction.
Click steps to track your progress.
Verify the input supply voltage at the NJ/NX controller's power supply terminals against the specified nominal range.
Inspect the grounding connections for the control panel and the NJ/NX controller for proper integrity and low resistance.
Inspect all safety-related input/output wiring and associated shield terminations for damage, loose connections, or potential EMI sources.
Verify all safety function parameters and settings in Sysmac Studio match the documented machine safety design.