Product Description:

B&R Automation manufactures the 8LSA43.DB030S200-3 as part of the 8LS Synchronous Motors series. The unit is a three-phase synchronous servo motor intended for closed-loop positioning and speed control in automated packaging, material-handling, or assembly lines. A 100 mm IEC flange attaches directly to machine frames, the inductive EnDat 2.2 encoder supplies absolute multi-turn feedback, and a single-cable hybrid connector carries both power and signals to simplify routing. Internal self-cooling with free air circulation eliminates the need for external blowers or liquid cooling plates.

At its rated operating point, the motor reaches 3000 rpm while delivering a continuous shaft torque of 3.1 Nm, which corresponds to 974 W of mechanical power for mid-range motion tasks. A torque constant of 1.63 Nm/A means output torque rises in proportion as phase current increases, helping the drive amplifier calculate the required setpoints. Dynamic response is aided by an electrical time constant of 6.1 ms, allowing current to build quickly inside the coils. Magnetic energy storage is set by a stator inductance of 36.5 mH, which moderates ripple and contributes to smooth rotation. Five pole pairs, a 19/12-bit inductive feedback resolution, and the ventilated housing support accurate motion without excessive heating.

For overload or acceleration zones, the motor can supply 15.2 Nm of peak torque, and it can withstand prolonged standstill duty up to 4 Nm without surpassing thermal limits. Copper losses are affected by a phase resistance of 5.94 Ω, so the drive must adjust current accordingly during holding or low-speed operation. Back electromotive force is characterized by a voltage constant of 98.44 V/1000 rpm, allowing the controller to predict DC-bus requirements during regeneration. The standard holding brake secures the axis when power is removed, the absence of an oil seal minimizes drag for high-speed cycles, and revision 3 retains full multi-turn capability over 4096 revolutions.