I took of all cables to the engine ( 2 X 3 phases from the PLC CONTROLLER and i measured the windings ( between each one of Them both on High speed Windings and slow speed windings and between Ground And each phase terminal)...... It looked okay
not too familiar with that type but wondering if you can disconnect the motor from the controller and then try running it on high speed... see if the fuses then pop without the motor connected, that'll at least either eliminate the motor as an issue or if it only pops with the motor connected then i would assume its related to the motor. again not familiar with this setup so im not even sure you can do that? either way interested in what you find so please keep us updated!