ELAU PacDrive SR motors

The highly dynamic synchronous AC servo motors of ELAU’s SR series are permanently excited synchronous machines designed especially for highly dynamic positioning tasks. The low moment of inertia compared with other AC servo motors in combination with the high overload tolerance not only guarantees excellent acceleration values, but also reduces energy consumption and stray heat of the motor. The torque is generated by the stator coil fed by a sinusoidal three-phase current system in combination with the magnetic field excited by the rotor magnets. The generation of the rotary current system depends on the rotor position in the digital motor controller or the positioning motor controller.  For that purpose, the rotor position is monitored by a resolver. Thanks to that principle, the drives are extremely robust and work without wearing down.