8LSA46.DB045D300-3 B & R Automation
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The B & R Automation 8LSA46.DB045D300-3 is a three-phase synchronous motor from the 8LS Synchronous Motors series with a rated speed of 4500 rpm and a flange dimension of 100 mm. It features a standard holding brake, self-cooling with free circulation, and an inductive EnDat encoder supporting multi-turn capability up to 4096 revolutions. The connection is angled with a connector, and the shaft end is equipped with a key.
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Product Description:
The 8LSA46.DB045D300-3 is a three-phase synchronous motor delivered by B & R Automation within the 8LS Synchronous Motors series. As a compact drive element, it converts electrical power into precisely regulated torque and speed for positioning axes and conveyor applications in automated machinery. The 8LSA designation indicates the standard configuration without reinforced bearings. Integrated absolute feedback allows the connected drive to maintain accurate position data during coordinated motion.
Mechanical integration is supported by a flange dimension of 100 mm and a mounting flange that fits IEC patterns. Power and feedback leads exit through an angled swivel connection, while a plug-in connector simplifies cable installation and service access. A standard holding brake locks the rotor when it is de-energized, helping prevent movement on vertical axes. Heat is dissipated through self-cooling with free air circulation, eliminating the need for an external blower. The motor reaches a maximum speed of 4500 rpm, making it suitable for fast pick-and-place gantries and other high-speed positioning systems. An inductive EnDat sensor supplies absolute position data to the connected drive. Length code 6 indicates the active stack height, while product revision 3 identifies the release of this model.
Position feedback provides a resolution of 19/12 bits for single-turn and multi-turn position data, and the interface uses EnDat 2.2 for clocked serial communication. The encoder retains position information across 4,096 revolutions, providing battery-free multi-turn tracking. Nonvolatile storage preserves this position information after power interruptions, allowing the controller to recover the absolute shaft location when power returns. The motor has no oil seal, so it should be installed away from direct fluid spray and other sources of liquid contamination. Torque is transmitted through a keyed shaft, which provides positive engagement with a compatible coupling or driven component. The plug-in electrical interface also reduces the need for loose internal wiring at the motor housing.
