8LSAA4.D9045S000-3 by B & R Automation

The 8LSAA4.D9045S000-3 motor is manufactured by B&R Automation and belongs to the 8LS Synchronous Motors series. It is a three-phase synchronous device designed to convert controlled drive output into repeatable rotary motion for packaging lines, gantry axes, and other automated stations where positioning accuracy and cycle consistency are required. Its compact servo design supports precise motion tasks in equipment that depends on stable speed and position control over repeated operating cycles.

Its rated speed of 4500 rpm is the continuous mechanical speed limit for normal operation. Position feedback is supplied by an Inductive EnDat encoder, a contact-free system that tolerates magnetic dust while maintaining signal integrity. The encoder operates on EnDat 2.2, allowing the drive to retrieve diagnostics and an electronic nameplate over the same channel. It provides 19/12-bit resolution, with 19 bits for single-turn data and 12 bits for multi-turn counting, which supports very fine position tracking. Combined with the 4096 revs multi-turn range, the feedback system tracks absolute shaft angle across long travel distances without requiring a homing sequence after every power cycle. Length code 4 corresponds to the stator stack height used in this frame, and the standard 8LSA configuration does not use reinforced bearings, which helps keep inertia low. A smooth shaft end also simplifies coupling to backlash-free clamps.

The mechanical interface uses a 70 mm flange, and the housing includes a mounting flange so the unit bolts directly to machinery without adapters. Heat is removed through self-cooling free circulation, so no fan or liquid circuit is required. Power and feedback conductors share a single-cable hybrid connection that locks with a molded connector and reduces wiring complexity. The motor is supplied without a holding brake or oil seal, and it is delivered in revision 3.