PMB31D-00201-00
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The PMB31D-00201-00 is a brake motor with a frame size of 31D and operates at a rated voltage of 220V. Manufactured by Pacific Scientific as part of the PMB Brushless Servomotors series, it features a TEFC enclosure and IP54 protection class. This motor includes an electromagnetic brake and a built-in thermal protector for safety.
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Product Description:
The PMB series brushless motor PMB31D-00201-00 is designed by Pacific Scientific for automation systems, with a thermal time constant of 28 minutes. It operates as an 8-pole paired synchronous unit and its rotor assembly uses Neodymium-Iron-Boron magnets for high torque generation.
The PMB31D-00201-00 motor has a static friction rated at 0.09 Nm and its viscous damping coefficient is 0.0124 Nm/Kprm. It features an inertia of 0.000137 kg·m² for rapid response during high speeds for dynamic performance and its thermal resistive value is 1.08 °C/W to support effective heat management. The motor is equipped with Hall sensor for feedback to keep track of operating speed and motion. It comes in a NEMA 34 frame size and possess a flat shaft configuration to allow stable coupling with mechanical loads. The PMB31D motor produces a peak torque output of 6.26 Nm and its rated speed is specified as 6000 RPM in normal load scenario. Its continuous stall current draw is 5.1 A and the maximum bus voltage supported is 320 V DC. This PMB31D motor has a line-to-line inductive value of 5.2 mH and it delivers a continuous locked torque of 2.11 Nm. The current required at peak torque is 15.3 A and it has a measured turning effect constant of 0.41 Nm per every ampere of current usage.
The PMB31D-00201-00 motor is presented with MS connector lead for electrical power transmission and its winding has 240 VAC designation that supports a nominal current of 5.4 A. It has an IP40 rated construction for minimal ingress protection and it comes without special customizations of sealing ring or thermistors. The PMB31D motor weighs 2.5 kg and it is accompanied by double shielded bearing for reliable and long-lasting performance.
Frequently Asked Questions about PMB31D-00201-00:
Q: What is the role of the Hall sensor in the PMB31D-00201-00 motor?
A: The Hall sensor provides real-time feedback on the motor's speed and motion. This allows precise control of rotational speed and smooth operation in automation systems.
Q: How does the PMB31D-00201-00 motor's inertia affect its performance?
A: With an inertia of 0.137 kg·m²x10-3, the motor ensures quick response to changes in load. This is crucial for applications requiring fast acceleration and deceleration.
Q: What is the benefit of the Neodymium-Iron-Boron magnets used in the rotor assembly?
A: These magnets provide high torque density, improving the motor's overall torque output. This makes the motor highly efficient for demanding automation applications.
Q: Why does the PMB31D-00201-00 motor have a thermal resistive value of 1.08 C/Watt?
A: The low thermal resistive value supports effective heat management during extended use. This helps maintain the motor’s performance and durability by preventing overheating.
Q: How does the viscous damping coefficient of 0.0124 Nm/Kprm affect motor stability?
A: The damping coefficient helps mitigate oscillations during operation, ensuring stable performance. This reduces the risk of system instability in high-speed applications.
