SANYO DENKI: Bipolar Stepper Motor Hybrid Frame Size Step 48VDC (PBM423FXE20)
The closed loop stepping system SANMOTION Model No.PB combines the ease-of use of stepping motors and the reliability of servo motors. Closed loop control based on feedback is made possible by the position-detecting encoder mounted on the stepping motor. This simple system delivers more reliable and highly efficient drive than open loop stepping systems.

This system can be used in a wide variety of applications utilizing features such as low vibration, low heat generation, and stable stopping, Semiconductor manufacturing equipment, analytical and testing devices used in medical and environmental fields, monitoring cameras, and searchlights, etc.

Motors with an encoder provide closed loop control that eliminates step-out (displacement), a shortcoming of stepping motors. Device reliability is improved because the motor moves to the target position without step-out even with an increased load. Also, the encoder constantly monitors the rotor position and various alarms can be issued in case of an error, providing the reliability of servo motors.