Brother Gearmotors has introduced IPMax, a line of lightweight, compact interior permanent magnet (IPM) gearmotors. The series of IPMax maximum performance gearmotors incorporate magnets embedded within the rotor as opposed to on the surface. No copper losses are experienced in the rotor and considerably less copper losses occur in stator winding. The gearmotors can operate fanless up to 1 hp and do not require encoders for sensor control. When stopped, a servo lock feature holds the motor in position.
The company claims its IPMax gearmotors are 23 percent smaller than comparable ie3 motors, and run 24 percent cooler for longer lifespan. They employ brake sequential — which sets motor operations when the mechanical brake is turned on or off — as well as a torque limit solution that protects the mechanical system. Various functions of their programmable I/O terminals may be changed according to external circuits or applications. RS485 is included as standard.
Interior permanent magnet motors are ideally suited for conveyors, fans, and pumps, and are frequently used for factory automation, material handling, packaging, and food processing.