@ArtVandelay 

Thank you for your post.
Please check whether you have enabled “Auto Firmware Upgrade” or scheduled firmware upgrades in the Omada Controller; a triggered upgrade will reboot the device.

Also, how many devices are you powering via this switch?
What are their PoE types and power-class specifications?

Under normal operation, capture the PoE status with the CLI command
show power inline

and supply the output of
show logging buffer
show running-config

so we can analyze the logs and configuration.