ATV61 drives with VW3A3319 option card.
ATV61 drives with BacNet option card
The object name that holds the device name can not be modified and always is ATV61.
The workaround is to assign a device name directly to the drive via the 7 [Display Config] -- 7.1 [User parameters] -- [device Name].
This name will apeears at the BACnet controller under Deivce Object Type -- "descripition". Please check
the attached example screen capture.