OMRON NX series system unit power configuration and troubleshooting

Reason: The NX bus connector was not fully engaged due to incomplete pushing along the hook rail during unit installation.

Inspection: Remove all units from the DIN rail and reinstall them in order, ensuring that each unit hears a "click" locking sound.

Maintenance and regular inspection suggestions

It is recommended to conduct the following checks at least once every 6 to 12 months (refer to the periodic checklist in the user manual):

Environmental inspection: The temperature inside the cabinet is 0-55 ℃, the humidity is 10-95%, and there is no condensation or corrosive gas.

Power quality: Use a multimeter to measure the unit power supply and I/O power supply, ensuring that the voltage is within the rated range (20.4~28.8V for 24V units, 5V power supply needs to be according to actual specifications).

Wiring inspection: Gently pull each wire to confirm that there is no looseness; Check if the shielding connection is secure.

Unit installation: Confirm that the DIN rail mounting hooks of all units are locked and the end covers are installed in place.

Cleaning: Wipe the surface of the unit with a dry soft cloth, and do not use diluents or benzene solvents. Do not touch the NX bus connector.