PMB32D-00114-02 Pacific Scientific
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The Pacific Scientific PMB32D-00114-02 is a brushless servomotor in the PMB Brushless Servomotors series. It has a NEMA Size 34 motor frame with a flat shaft design and comes equipped with a digital encoder for commutation, offering a resolution of 2048 ppr. This servomotor features flying leads with AMP connectors and includes a PTC thermistor for customization, with a nominal stall current of 5.4 ARMS at 240VAC.
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Product Description:
The PMB32D-00114-02 is a brushless servomotor built by Pacific Scientific for the PMB Brushless Servomotors series. It converts commanded current into regulated rotary motion, providing the primary drive element for positioning tables, feeders, and other automated axes that demand closed-loop accuracy and quick settling times. By using permanent magnets and electronic commutation, the unit eliminates brush wear and supports continuous duty in tightly controlled industrial environments. The brushless design also avoids the maintenance associated with contact wear in brushed motors.
The motor is packaged in a NEMA Size 34 frame, so its flange and bolt pattern match common motion platforms without custom adapters. Under worst-case locked-rotor conditions, the winding draws up to 5.4 ARMS from a 240 VAC drive, a value used to size protective devices and cabling. Power and feedback exit the housing through flying leads with AMP connectors, allowing rapid field termination while keeping the overall body short. Position feedback is supplied by an incremental encoder that produces 2048 ppr signals, giving the controller fine digital resolution over one mechanical revolution. Commutation tracks are embedded in the same sensor, so phase switching is handled by the integrated digital encoder with commutation rather than by Hall devices. This combined feedback arrangement reduces the need for separate sensing components inside the motor.
The output shaft has a flat land, providing positive drive when clamped by set-screw or split-hub couplings. A magnetic stack length multiple of 2 increases the active iron volume, yielding higher continuous torque than single-stack models of the same frame size. Thermal protection is provided by an embedded PTC thermistor that rises sharply in resistance as winding temperature approaches its limit, enabling the drive to reduce current before insulation is stressed. The motor is intended for use with the Pacific Scientific servodrive family, where its feedback and protection signals can be used by a matching drive. This arrangement supports coordinated motor control without requiring separate commutation devices.
