8LSC46.DB030S105-3 by B & R Automation

B&R Automation manufactures the 8LS Synchronous Motors series for servo applications. The 8LSC46.DB030S105-3 motor falls within that lineup. It is a three-phase synchronous unit intended for precise position and speed control in automated machinery. The designation 8LSC indicates a built-in fan configuration, while the mounting flange lets the motor couple directly to rigid machine frames. By integrating power, feedback, and fan support features into one housing, this model supports compact installation for motion axes that demand continuous high-speed service.

The cooling assembly uses a 230 VAC fan option that moves air along the stator to maintain thermal limits when the motor runs at rated current. Power, encoder, and brake lines are combined in a single-cable solution, which minimizes cabinet wiring and reduces electromagnetic loops. Position feedback comes from an Inductive EnDat sensor, and it communicates through EnDat 2.2 so absolute position is available after power-up without a homing cycle. A 100 mm flange standardizes mechanical interchange with other IEC-conforming motors. Under nominal conditions, the rotor reaches 3000 rpm, providing a balance between torque density and permissible bearing speeds.

The encoder delivers 19/12-bit resolution, supplying 524,288 discrete positions per turn plus multirevolution data. Internal counting tracks up to a 4096-revolution multi-turn range, allowing long-stroke axes to report absolute position even after manual movement. A keyed shaft transmits torque without slip and aligns couplings in a repeatable orientation. No holding brake is fitted, so external clamping must secure vertical loads, and the absence of an oil seal makes the motor better suited to clean environments than to fluid-rich zones. Length code 6 identifies the active stack, and product revision 3 indicates minor updates to winding insulation and connector geometry.