-Check the port light indication -Green or Amber ?
-Try to swap the r510 to known good working port and check if it is working fine ?
-And try to connect any other poe device on this interface and check if it is powering up
-“show inline power " this command will help you to find out the issue on the port
-"“show inline power detail debug” would show as “UNKNOWN” for the failed devices"
-Most of the poe related issues are fixed on this version 8095g
If this issue is not resolved , Please log a ticket with the below link so that we will help you to process RMA .