hi, i have one unit of metal plate bending machine. the motor is apply as a back stopper, every time the machine start run must do reference position than back stopper will run with follow the controller program position. the problem start when motor is jamb (ASYNCHONOUS BRUSHLESS MOTOR [MVQ 63 30 2 14 5])than we order a new motor, but we very ensure the motor is follow the old motor same. after we install the new motor, speed of motor is become slow. i have been download menu eco2&eco4 study and do some trouble shooting servo drive(F1 ECO2 SELEMA DRIVE) follow the menu but is not work because we can't change the parameter. DO U MIND GIVE SOME ADVICE OR CONSULT UR HELP WILL BE APPRECIATED. THANKS BY CHIEW.