If you return back to the ABB converter performance data shared above, you will see that the drive and the motor can deliver constant torque 106Nm at speeds range from 102-1800rpm at about 39A output current.
So, for the drive (at Normal Duty) which can supply continuous 52A output current at...
jraef & waross,
The drive is rated for heavy duty but at lower limits as below, and as you see the Heavy Duty (HD) and Normal Duty (ND) rating for short time overload is the same : 78A
FacEngrPE,
Actually the drive is not tripping, we have by mistake performed one test with the drain valve...
OK, the VFD rating may be less than required but the motor most of the time is running at normal duty (~25A at full speed), unless accelerating. The overload only occurs for less than 2 seconds during the shock loading.
The motor manufacturer ABB recommends its drive ACS880/ACS800 with DTC...
