PMB21D-30114-00
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The PMB21D-30114-00 is a NEMA Size 23 servomotor with a continuous stall torque of 0.64 Nm and a peak torque of 1.92 Nm. Manufactured by Pacific Scientific, this motor is part of the PMB Brushless Servomotors series. It has a weight of 1.2 kg and a thermal resistance of 1.39 °C/W.
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Product Description:
The PMB21D-30114-00 motor model gives better electrical and mechanical features for motion tasks. It has a torque constant of 0.34 Nm/ARMS (2.99 lb-in/ARMS), which provides stable torque output per unit current, improving controllability and minimizing electrical stress during operation.
This is suitable for precision-based systems requiring repeatable force delivery over variable loads. The voltage constant is rated at 0.22 VRMS/rad/sec (22.7 VRMS/kRPM). It is the back EMF induced relative to shaft speed. This rating ensures correct voltage matching with the drive system. It allows for efficient conversion in dynamic speed ranges. It gives predictable voltage response. This improves motor-drive coordination. The motor consumes 7.8 ARMS at peak torque, providing high acceleration potential for short periods without thermal or electrical saturation. Such capability for high peak current allows for quick system response. It is used in tasks needing abrupt change in motion or rapid reversal. This motor gives a line-to-line inductance of 4.0 mH. That it benefits from in terms of enhanced filtering of the current ripple and smooth transfer. This value of inductance stabilizes electrical performance, particularly under operating conditions under PWM control schemes, and reduces torque ripple. The combination of low voltage constant and sufficient inductance provides balanced electrical profile, thus suitable for systems requiring low-noise, low-vibration operation. The PMB21D-30114-00 motor is useful in compact designs where precise motion and efficient energy use are the needs. It is easily integrated with digital drives in vision tracking, handling of light materials, and measurement instruments. Its moderate electrical constants give easy tuning during system commissioning.
This motor performs efficiently in continuous or intermittent tasks. Its torque and voltage constants exhibit predictable behavior over a range of motion needs. With strong current capability and clean electrical characteristics, the PMB21D-30114-00 delivers consistent performance for uses that require controlled, repeatable motion.
Frequently Asked Questions about PMB21D-30114-00:
Q: What sensor type is used in PMB21D-30114-00?
A: PMB21D-30114-00 uses a digital encoder with commutation.
Q: What is the stack length multiple of PMB21D-30114-00?
A: PMB21D-30114-00 has a stack length multiple of 1.
Q: What is the voltage constant of PMB21D-30114-00?
A: PMB21D-30114-00 has 0.22 VRMS/rad/sec or 22.7 VRMS/kRPM.
Q: What current is drawn at peak torque by PMB21D-30114-00?
A: PMB21D-30114-00 draws 7.8 ARMS at peak torque.
Q: What is the line-to-line resistance of PMB21D-30114-00?
A: PMB21D-30114-00 has 6.0 ohms line-to-line resistance.
