hi we have a ACS800 drive with reta 02 card showing comms fault 7510, both LED's are green, fault won't clear..hel
the fault 7510 mean communication error between drive and master.
Regardless of the status of the LEDs on board the RETA-02, controls the cables and the correct operation of the master transmission.
If the failure does not disappear, try replacing the RETA-02
Hope this help you