8LSA54.EA045D200-1 by B & R Automation

B & R Automation's 8LSA54.EA045D200-1 belongs to the 8LS Synchronous Motors series. It is a three-phase synchronous unit intended for axis drives in industrial automation. The motor integrates into machines through its mounting flange and supplies continuous torque without external fans, providing a compact motion source for packaging lines, material-handling gantries, and similar equipment that demand precise electrical commutation.

The motor's rated speed is 4500 rpm, which is the maximum continuous rotor velocity at nominal voltage and load. A flange dimension of 142 mm matches standard frame cutouts, so installation does not require adapter plates. Position feedback is delivered by an Inductive EnDat encoder that operates on the EnDat 2.1 protocol, supplying digital position data with high noise immunity for servo loops. Thermal management uses a self-cooling design with free air circulation, eliminating the need for liquid or forced-air auxiliaries. Electrical power and feedback reach the stator through a single connector located on an angled swivel head. The length code 4 corresponds to the active stack height for this motor size, and single-turn capability is used when absolute multi-turn information is not required. The shaft has no oil seal and uses a standard labyrinth instead.

A standard holding brake secures the rotor during power-off states, making the motor suitable for vertical loads or emergency stops without external clamps. Cable routing is simplified by the angled swivel connector housing, which helps clear adjacent axes in tight machine layouts. The smooth shaft transfers torque through friction couplings rather than keys, which can reduce concentricity errors in high-speed assemblies. Encoder resolution is mapped to 19/0 bits for single-turn and multi-turn data, giving 524,288 discrete counts per revolution while indicating that no multi-turn count is provided.