Product Description:

The PMA11A-00100-00 is a brushless servomotor produced by Pacific Scientific as part of the PMA Brushless Motors series. It provides closed-loop positioning for pick-and-place axes, light conveyors, and small indexing tables. Resolver feedback supplies continuous position data to the drive so the control loop can correct for load changes during acceleration, deceleration, and steady running. Within the series, the model uses stack length 1 and a standard configuration, which helps it fit compact motion systems that need precise rotary control.

During steady-state loading, the motor can deliver a continuous stall torque of 0.26 Nm, allowing it to hold position under light static load. Under short overloads, it reaches a peak torque of 1.4 Nm for fast starts or stops. The three-phase windings draw a nominal stall current of 1.3 ARMS, so the drive must limit current to avoid excess heat in the stator. Those windings are rated for supplies up to 240 V AC maximum, making the motor suitable for common industrial servo amplifiers in this voltage class. Dynamic response is supported by a rotor inertia of 1.2×10⁻⁵ kg·m², which helps the axis respond quickly while maintaining stable speed control.

The square aluminum frame measures 55 mm on each side, enabling direct mounting in compact machinery while preserving surface area for heat dissipation. Total mass is only 1.2 kg, which helps limit moving load when the motor is installed on a gantry or carriage. Power and feedback exit the rear cap through a right-angle cable exit, reducing clearance requirements where space behind the motor is limited. The stator terminals are presented on a keyed 6PP six-pin plug that matches the manufacturer's harnesses, while the smooth shaft supports clamp-style couplings and the motor is supplied without a brake, so holding must be provided externally when power is removed.