AC M2n Servo Motors

Three-phase AC-servomotors built in the way described, are specifically more efficient, (higher rated torque),
than DC servomotors, and allow for operation at a lower moment of inertia. Therefore, the required motor
size for a specific application will be smaller with a three-phase AC-servo motor than with a DC motor.

Synchronous three-phase AC-servomotors have a number of advantages over DC motors:
There are no electromechanical parts to wear out, and are therefore "maintenance-free".
The low moment of inertia of the rotor, due to power density, allows for a high acceleration capacity.
No commutation of the limit curve, providing for high acceleration moments in higher speed ranges
as well.
There are no heat losses in the rotor of the motor, providing for favorable thermal characteristics,
in addition to a high degree of protection, due to the closed construction of the unit.