PMB31D-10216-00
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The PMB31D-10216-00 brushless servo motor features a NEMA Size 34 frame, a digital encoder with commutation, 8 poles, and a continuous stall torque of 1.54 Nm. Part of the PMB Brushless Servomotors by Pacific Scientific, it boasts a peak torque of 4.56 Nm and a weight of 2.9 kg, ensuring reliable performance.
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Product Description:
Model number PMB31D-10216-00 from Pacific Scientific sits in the PMB brushless servomotors product range. It lists a nominal stall current of 5.4 ARMS, providing ample drive current for demanding spindle loads. The resolution for encoder is 4096 ppr which supplies high positional granularity for closed-loop control. Thermal time constant is 26 min to predict temperature rise during continuous duty and supports thermal management planning.
The module specifies eight poles that raise torque per electrical cycle and aids smoother low-speed torque delivery. Mass of 2.9 kg helps to calculate system inertia and mounting loads. The sensor type includes digital encoder which enables precise commutation timing and reduced torque ripple. This brushless servo motor type eliminates brush maintenance and supports long service intervals. Voltage constant equals 0.29 VRMS per radian per second which links back-emf to speed and eases drive tuning. The peak torque equals 4.56 Nm which supplies short-duration acceleration reserves for fast motion profiles. Line-to-line resistance equals 1.2 Ohms which informs drive current limit settings and thermal loss calculations.
The PMB31D-10216-00 offers static friction at 0.102 Nm to reduce stiction and improve low-speed responsiveness. The motor’s rotor inertia is 0.065 kgm2 x10^-3 which determines acceleration under a given torque and aids servo tuning. Continuous stall torque of 1.54 Nm sets the sustained torque capability. The device features thermal resistance equals 1.10°C per watt that supports steady-state temperature rise estimates under known dissipation. Further, the continuous stall current is 3.5 Arms and can define long term current limits for safe operation.
Frequently Asked Questions about PMB31D-10216-00:
Q: What encoder resolution does PMB31D-10216-00 use?
A: This servo motor uses a 4096 ppr encoder which delivers fine position increments for closed-loop control.
Q: How does the number of poles influence PMB31D-10216-00 performance?
A: An eight pole design affects electrical frequency and torque production by increasing torque per electrical cycle and reducing torque ripple.
Q: How does the listed weight for PMB31D-10216-00 influence system integration?
A: The 2.9 kg mass for this drive provides a datum for mechanical support and inertia matching calculations.
Q: What does the thermal time constant specification indicate for PMB31D-10216-00?
A: The thermal time constant of 26 minutes indicates the time scale for the motor winding and rotor to approach thermal equilibrium after a step change in power.
Q: What role does the sensor type play in PMB31D-10216-00 operation?
A: The digital encoder with commutation provides both position feedback and commutation signals which enable accurate rotor position sensing and proper electronic commutation.
