Mitsubishi PLC FXon-24MR-ES

We need help for a Mitsubishi PLC FXon-24 MR-ES if the PLC is still working, it is use for more than 10 years for a revolving door. The PLC is connected to a frequency inverter and a motor. It is operational but the PLC shuts off after 3-4 minutes of use. The PLC I/O led lights flickers and then stops.
It will be operational again when we turn on the system again after 5 -10 minutes from shut off.

Are there any connections we need to check to the I/O of the PLC?

Thank you for your help.

I strongly recommend you arrange the PLC program upload and backup save as soon as possible. Looks like you will have to replace it soon.

Thank you Segei for your recommendation. We will do the backup and upload and replace the PLC.