8MSA5M-E0-GU00-1 B & R Automation
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The 8MSA5M-E0-GU00-1 is a self-cooling synchronous motor manufactured by B & R Automation as part of the 8MS Three Phase Synchronous Motors series. It features a single-turn EnDat encoder with a frequency limit of at least 100 kHz and offers a resolution of 512 lines with a precision of ±60 seconds. This medium torque motor has a motor size of 5 and motor length M.
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Product Description:
The 8MSA5M-E0-GU00-1 synchronous motor is produced by B&R Automation within the 8MS Three Phase Synchronous Motors series. It is a brushless AC unit intended to deliver controlled torque and speed for axes in packaging lines, handling robots, and other motion-centered machinery. When paired with compatible drive modules, the motor converts electrical energy into rotation with tight phase alignment, making it a dependable actuator for coordinated multi-axis automation. Its brushless design eliminates mechanical commutation and supports precise electronic control across repetitive operating cycles.
The motor integrates an optical encoder with a feedback bandwidth of at least 100 kHz at -3 dB, so the feedback channel retains signal integrity even at high rotational speeds. The encoder has a resolution of 512 lines, and each incremental edge is electronically interpolated to refine drive commutation. Angular deviation remains within ±60 arcseconds, allowing the controller to minimize following error during precise positioning tasks. Sensor data and power travel through the EnDat serial interface, reducing wiring complexity and supporting automatic parameter identification. Thermal management relies on self-cooling, which dissipates heat through the housing surface without external fans or liquid circuits. This passive cooling method also reduces airflow requirements around the installed motor.
The motor has a frame size of 5, giving it a stator diameter suited to the medium-power range and associated flange patterns. The selected length code of M extends the magnetic stack so that more active copper is available for transient demands without increasing the footprint in the other two axes. Relative continuous torque is classified as medium, balancing torque density with inertia for axes that require moderate acceleration. The encoder uses a single-turn arrangement that transmits the absolute shaft position within one mechanical revolution. This feedback arrangement suits rotary stations that establish a reference during startup and then use incremental updates while operating. The extended stack and moderate inertia support controlled acceleration without requiring a larger frame width or height.
