8LSA44.DA030S000-3 by B & R Automation

The 8LSA44.DA030S000-3 is a three-phase synchronous motor manufactured by B&R Automation as part of the 8LS Synchronous Motors series. Intended for servo axes, it converts controlled electrical energy into precise rotary motion. This allows automated packaging, material-handling, and assembly machinery to reach repeatable speeds and positions.

It delivers a continuous nominal torque of 4.62 Nm at a rated speed of 3000 rpm; this operating point corresponds to a nominal power output of 1451 W while drawing only 2.8 A of phase current. For short duty cycles, the drive can supply up to 22.8 Nm, and its peak current ceiling is 21.9 A, giving headroom for rapid acceleration beyond the 6 Nm stall-torque threshold. With a torque constant of 1.63 Nm/A, the controller can predict output torque directly from phase current, and the 2.73 kg cm² rotational inertia balances quick speed changes against load coupling. Mechanical interface is provided by a 100 mm mounting flange, a length-code 4 housing, a smooth shaft, and standard 8LSA construction that omits reinforced bearings, oil seals, and a holding brake.

Electrically, the stator shows an inductance of 24 mH and a resistance of 3.6 ?, producing an electrical time constant of 6.7 ms that indicates how fast phase current settles after command changes. The back-EMF slope is 98.44 V per 1000 rpm, and the thermal mass gives a 30 minute thermal time constant for steady heating under load. Position feedback comes from an inductive EnDat 2.2 encoder with 19-bit single-turn resolution and no multi-turn bits, combined with single-turn capability and a hybrid single-cable connector. Self-cooling by free air circulation disperses losses, while a mounting flange secures the 5.4 kg drive module. This unit ships as product revision 3.