Product Description:

The PMA45R-00100-00 is a brushless servomotor produced by Pacific Scientific for the PMA Brushless Motors series. In automated machinery, it supplies commanded torque and speed so that an axis follows its motion profile exactly, improving throughput and positional accuracy on packaging stations, pick-and-place arms, and light machining tables. The motor serves as a direct-coupled drive element that converts three-phase power from a matched amplifier into rotary motion while encoder feedback closes the loop inside the controller. This arrangement supports precise motion on axes that need repeatable starts, stops, and speed changes.

At a continuous stall capability of 10.2 Nm, the unit can hold a static load without overheating, and short transients can reach 36.8 Nm to accelerate inertial masses. Phase windings draw 11.0 ARMS at that stall point, a figure that helps with drive sizing and cable selection. A voltage class of 240-480V AC permits direct connection to common industrial mains. Dynamic response is helped by a rotor inertia of 0.84 × 10⁻³ kg·m², which limits the energy that must be overcome during speed changes. Position and velocity feedback come from a resolver, and the smooth shaft mates to gearheads or pulleys without keys. The motor is built without a brake, so any holding function must be provided elsewhere in the system. A stack length code of 5 indicates the internal lamination height and aligns with the rated torque density.

The square frame measures 115 mm on each side, letting the housing fit mounts designed for NEMA 42 sized equipment. Power exits through a right-angle conduit box that carries a 6PP six-pin connector, which helps reduce bend radius in crowded panels and tight machine spaces. Total mass is 10.4 kg, providing useful damping while remaining manageable during installation. No special design features beyond the standard construction are included. The resolver’s analog signal also tolerates electrically noisy environments when shielded cable is used, which helps maintain stable feedback quality during operation.