Product Description:

The 8LMA44.DA022C000-0 synchronous motor is produced by B&R Automation as part of its 8LM Synchronous Motors series. Designed for servo axes in automated machinery, the unit delivers regulated rotary motion and position feedback through its EnDat 2.2 single-turn encoder. The encoder supplies absolute position data to the drive controller, enabling closed-loop speed and torque regulation in packaging, robotics, and assembly lines. Because the feedback device is integrated into the motor, the axis can be monitored without a separate external position sensor, which helps keep the installation compact.

During continuous operation, the motor reaches a nominal speed of 2200 rpm while delivering 5 Nm of torque, producing a mechanical output of 1037 W. For intermittent peaks, the shaft can supply up to 20.5 Nm, which helps the axis overcome acceleration demands and short load transients. The motor has a torque constant of 2.22 Nm/A, so every ampere delivered by the inverter contributes proportionally to shaft torque. With five pole pairs, the electrical frequency needed for rated operation stays within common industrial drive ranges, and the nominal current draw is 2.26 A. This combination suits servo applications that alternate between steady running and short bursts of higher demand.

Transient behavior is influenced by the winding and magnetic characteristics. A stator inductance of 44.8 mH limits current rise time, while a stator resistance of 6.24 Ω contributes to copper losses under load. The drive protection circuits must handle a maximum phase current of 14.46 A during rapid acceleration, and at stall the motor draws 2.57 A and can hold 5.7 Nm without motion. Rotor dynamics are affected by a moment of inertia of 2.73 kgcm², allowing quick speed changes with controlled response, and a voltage constant of 134.04 V/1000 rpm supports back-EMF sensing in modern servo amplifiers.