8LSA46.EB030D900-3 B & R Automation
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The B & R Automation 8LSA46.EB030D900-3 is a three-phase synchronous motor from the 8LS Synchronous Motors series, featuring a flange dimension of 100 mm and a mounting flange. It includes an inductive EnDat encoder with multi-turn capability of 4096 revolutions, and has a rated speed of 3000 rpm. The motor uses a self-cooling principle with free air circulation and comes equipped with a standard holding brake.
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Product Description:
The 8LSA46.EB030D900-3 belongs to the 8LS Synchronous Motors series from B&R Automation. It is a three-phase synchronous motor intended for positioning and continuous-speed tasks in industrial automation, where a compact mounting flange and integrated feedback help conserve installation space. This version follows the 8LSA configuration, indicating a standard build without reinforced bearings, and it carries product revision 3. A mounting flange with a 100 mm interface simplifies attachment to gearboxes or machine frames, allowing the motor to serve as a direct-drive element in material-handling, packaging, or robotic cells.
The rotor operates at a rated speed of 3000 rpm, supporting positioning and speed-controlled applications across its intended operating range. Position feedback is supplied by an inductive EnDat sensor, and communication uses the EnDat 2.1 protocol for compatibility with B&R ACOPOS drives. The encoder provides 19-bit single-turn and 12-bit multi-turn resolution, allowing the connected controller to track shaft position accurately over multiple rotations. For emergency stops or power-off holding, the motor includes a standard holding brake that clamps the shaft and prevents vertical loads from drifting. The centered flange interface also supports accurate alignment between the motor shaft and the connected machine component.
Heat is removed through self-cooling with free air circulation, eliminating the need for forced-air cooling hardware around the motor. Power and encoder leads exit through a swiveling angled connection, allowing cable routing to accommodate the available machine space. A sealed connector block protects the electrical contacts and simplifies cable attachment during installation. An internal oil seal protects the bearing cavity when the keyed shaft drives gearheads or pulleys in areas exposed to dust or lubricant. The encoder retains multi-turn position data across 4096 revolutions, reducing the need for homing after a power interruption. Length code 6 indicates the active stator stack length, while the keyed shaft provides positive torque transmission during repetitive start-and-stop cycles.
