Product Description:

The 8MSA5L.E3-V4 is a three-phase synchronous motor engineered by B&R Automation for the 8MS Three Phase Synchronous Motors series. Intended for servo axes that require steady torque and accurate velocity control, the unit converts drive current into magnetic torque without mechanical commutation. Its design permits direct coupling to gearboxes or load shafts, making it suitable for packaging machinery, pick-and-place modules, and general motion sequences in automated production lines.

Thermal management is handled by a self-cooling housing that dissipates heat generated by internal losses through the aluminum frame, so no auxiliary fan is needed during standard duty cycles. The frame corresponds to motor size 5, while the L length code provides an extended stator stack for higher flux density. The motor has a large relative rated torque, allowing it to sustain elevated load levels without derating. Dynamic control loops benefit from an encoder bandwidth of ≥ 6 kHz (-3 dB), permitting tight position regulation at high rotational speeds. Position feedback begins with an inductive scale that delivers 32 lines per mechanical revolution, giving the controller predictable edge spacing for speed calculations.

The position sensor achieves an angular precision of ±400 arc-seconds, and its EnDat Inductive interface streams digital feedback directly to B&R ACOPOS drives. The multi-turn encoder tracks shaft motion across 4096 turns, eliminating the need for homing routines after a power loss. Internal interpolation increases command granularity beyond the base resolution, supporting smooth operation and minimizing torque ripple at slow speeds. This nonvolatile capability allows synchronized motion groups to resume operation quickly when fieldbus commands are restored, while the digital feedback connection helps keep cable routing simple.