Product Description:

The 8MSA5M.R0-V401 is a three-phase synchronous motor assembled by B & R Automation for positioning and speed-controlled axes in automated equipment. It belongs to the 8MS Three Phase Synchronous Motors series and is intended for direct connection to the vendor’s AC servo drives. The unit converts electrical power into mechanical shaft rotation with high dynamic response, providing repeatable motion profiles for packaging, pick-and-place, and material-handling stations. As a synchronous motor, it works with a servo drive to maintain controlled speed and accurate shaft positioning during changing load conditions.

The motor uses a self-cooling housing, so heat is removed through natural convection without auxiliary fans or liquid circuits. This cooling method keeps the installation simpler because no separate airflow or coolant connection is required at the motor. Rotor position is fed back by a resolver, giving analog sine-cosine signals that remain reliable in electrically noisy environments. The length code M indicates a medium frame depth that balances torque output and installation space, while the frame size code 5 sets the stator diameter for compatibility with mechanical mounts and gearboxes built for this platform. Its relative rated torque is medium, which suits moderate-load applications that still require fast acceleration.

Motion accuracy is supported by a resolver nonlinearity of ±1 angular minute, which limits cyclic deviation between electrical and mechanical angles. Resolver absolute precision is ±10 angular minutes, which states the maximum single-point error over a full 360° rotation. The sensor is a BRX type, matching the manufacturer’s servo drives without additional conversion electronics. Resolver feedback also provides stable position information for commutation and closed-loop operation across the motor’s speed range. This arrangement supports direct integration with compatible servo hardware.