8LSA46.EB030D900-3 by B & R Automation

The 8LSA46.EB030D900-3 is a three-phase synchronous motor manufactured by B&R Automation and assigned to the 8LS Synchronous Motors series. The internal designation 8LSA indicates a standard build without a reinforced bearing, and product revision 3 with length code 6 identifies its mechanical envelope within the family. This motor mounts by flange and serves as a rotary actuator in industrial automation, delivering controlled motion for indexing tables, packaging lines, and other equipment that require precise velocity regulation. Its synchronous design allows the connected drive to regulate torque and speed with repeatable response during changing loads.

It uses a 100 mm flange that aligns directly with machine frames, reducing the need for adapter plates. Under nominal conditions, the rotor reaches a rated speed of 3000 rpm, enabling direct coupling to gearboxes or timing pulleys. Position feedback is provided by an inductive EnDat encoder, and protocol version 2.1 supports automatic parameter transfer to the drive. Within this format, the system provides a 19/12-bit resolution for single-turn and multi-turn data, allowing accurate position interpolation. A built-in counter tracks 4096 revolutions in multi-turn operation, so homing routines are unnecessary after power loss. The shaft end is keyed, an oil seal limits lubricant migration, and power plus feedback lines mate through a locking connector.

Its thermal concept uses self-cooling and relies on free air circulation, so no external blower is required. Because cooling depends on airflow around the housing, the frame can release heat without added ducting. For static holding or emergency stops, the motor includes a standard holding brake that clamps the rotor when drive power is removed. Cable routing is simplified by an angled swivel connection that lets the cable exit face the machine wall while keeping bend radii within limits. This arrangement helps the motor fit into tightly spaced machine sections where cable clearance is limited.