Solution : If you want to factory reset ABB DCS880 drive  parameter then use the following step :

1. First take drive in local mode by pressing LOC/REM button.

2. Press enter button then select parameter and then goto the parameter group 96.

3. After enter, select parameter 96.15 and set value 70 (All to factory defaults) then press enter button to save.

now your drive reset to the factory default.