Omron · NJ/NX-series Machine Automation Controller
The rotation speed of the fan is 40% or less of the rating and the cooling performance decreases. This indicates a potential issue with the cooling system's efficiency, which can lead to overheating.
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Inspect the cooling fan's intake and exhaust vents on the Omron NJ/NX controller for dust buildup, debris, or any physical obstructions that may impede airflow.
Verify the ambient operating temperature surrounding the controller is within the manufacturer's specified range to rule out environmental factors stressing the cooling system.
Check the controller's system log, diagnostic display, or engineering software (e.g., Sysmac Studio) for specific fan status, run-time, or related error messages providing further detail on the fan's operation.
Verify the controller's power supply voltage at the input terminals is stable and within the specified operational limits, as unstable power could indirectly affect fan motor performance.