PMB31D-10114-02
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The PMB31D-10114-02, part of Pacific Scientific's PMB Brushless Servomotors series, features a NEMA Size 34 frame and standard flange mounting. This motor delivers a continuous stall torque of 2.1 Nm, a peak torque of 4.8 Nm, and a rated speed of 5,750 RPM. It operates on a 240 V AC power supply bus.
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Product Description:
The Pacific Scientific PMB31D-10114-02 Brushless Servomotor has a safe continuous stall current capacity of 5.1 amperes. It has a low viscous damping for efficient speed control and lightweight rotor inertia for rapid and responsive motion in industrial automation environments.
The PMB31D-10114-02 brushless servomotor is capable of producing 2.11 nm torque steadily while not spinning. It pulls 5.4 amperes of electric flow from the supply when it is completely stopped and delivers its rated stall rotational force. In the motor windings the opposition to current flow is measured at 2 ohms. Its face is about 3.4 inches across which suggest a standardized outer dimension for its plate and mounting points. The electrical connection is made via flexible wires coming directly from the modules and ends in AMP brand plug ends for fast installation. For each ampere of root mean square current it produces 0.41 nm of steady rotating power. It is built to operate around six thousand turns of the shaft per minute in typical environments. It features a positive temperature coefficient thermistor which is a built in sensor that changes resistance with heating value. Its temperature takes 28 mints to change significantly after a shift in load or environment.
The PMB31D-10114-02 brushless servomotor is designed to be powered safely up to two hundred forty volts alternating current. It comes with a D type winding designator that is used by the manufacturer to specify the winding arrangement. It comes with a standard single length version of its version and its rotating axle has a circular cross section without keyways or flats. It has a built in position sensor that sends digital signals and with 2048 pulses per revolution it can measure movement with fine precision.
Frequently Asked Questions about PMB31D-10114-02:
Q: How does the PMB31D-10114-02’s encoder resolution affect positioning accuracy?
A: Its 2048 pulses-per-revolution encoder enables precise motion tracking, reducing cumulative positioning errors. This is critical in applications requiring exact repeatability, such as CNC or pick-and-place robotics.
Q: Can this motor operate efficiently at variable speeds?
A: Yes, its electrical and mechanical design supports stable operation across a wide speed range. Controller tuning ensures torque delivery matches application requirements without oscillations.
Q: Why is the PMB31D-10114-02 rated for a specific maximum input voltage?
A: The voltage limit ensures insulation integrity and prevents overcurrent in the windings. Exceeding it risks premature component failure or unsafe operating conditions.
Q: How does a positive temperature coefficient thermistor help in motor protection?
A: It changes resistance as the motor warms, allowing the drive to detect overheating. This enables automatic shutdown or derating before damage occurs.
Q: What role does winding resistance play in performance and efficiency?
A: Higher resistance reduces current draw but limits peak torque output. Lower resistance allows more torque but increases heat generation.
