PMB31B-00216-02

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The PMB31B-00216-02 is a NEMA Size 34 servomotor featuring digital encoder with commutation and a 4096 ppr resolution. Manufactured by Pacific Scientific under the PMB Brushless Servomotors series, it delivers a rated speed of 2,700 RPM at 240 V AC. With a peak torque of 4.7 Nm, it suits demanding applications.

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Product Description:

The Pacific Scientific PMB31B-00216-02 is a Brushless servomotor that has a NEMA Size 34 frame and a flat shaft type. The motor can manage heavier loads for shorter periods of time due to its peak torque of 4.1 Nm. It also has digital encoder feedback. Pacific Scientific's motion control technologies are known for their applications in industrial automation and precision drive systems.

The PMB31B-00216-02 brushless servo motor guarantees consistent current flow to the motor with its 2.7 A winding rating. With a steady torque of 1.9 Nm, the motor can maintain a constant output under typical conditions. The motor can keep a constant torque even when stopped under load due to its continuous stall torque rating of 2.1 Nm. With a peak stall torque of 4.1 Nm, it provides excellent holding capability even when faced with extreme torque demands. The motor is equipped with flying leads that have MS connectors, ensuring reliable connections. The motor's 2900 RPM rated speed is suitable for most servo motion needs. The maximum no-load speed is 4300 RPM. The digital encoder, which has a pixel-per-second (ppr) count of 4096, is responsible for providing precise control with accurate position feedback. Synchronization with drive systems is simplified as a result of the built-in compatibility with communication capabilities.

The PMB31B-00216-02 brushless servo motor incorporates encoder feedback, which improves servo loop control precision. The overall design may support applications in industrial automation that require reliable motion control. The brushless servo motor is utilized in systems and robotics. This PMB brushless servo motor provides a single motor capable of handling torque, speed, and precise sensing. The PMB31B motor is designed to work consistently in a variety of settings.

Connector Type
Flying leads with MS connectors
Continuous Torque
2.1 Nm (18.7 lb-in)
Encoder Resolution
4096 ppr
Inductance (line-to-line)
2.5 mH
Inertia
0.14 kg·cm² (1.21 lb-in²)
Max Speed (drive Limited)
4,300 RPM
Motor Size
NEMA Size 34
Nominal Stall Current @240vac Max
2.7 ARMS
Peak Torque (2s)
4.7 Nm (41.3 lb-in)
Rated Speed
2,700 RPM @ 240 V AC
Resistance (line-to-line)
4.1 Ω
Sensor Type
Digital Encoder with commutation
Stack Length Multiple
1
Weight
2.7 kg (6.0 lb)
Winding Current
2.7 A
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Frequently Asked Questions about PMB31B-00216-02:

Q: Why does PMB31B-00216-02 have a winding rated at 2.7 A?

A: The 2.7 A winding provides stable electrical current flow. It ensures balanced torque delivery that maintains consistent motor operation under rated load without thermal overload.

Q: Does PMB31B-00216-02 provide accuracy with the 4096 ppr encoder?

A: The 4096 ppr encoder ensures high-resolution feedback. It improves positional accuracy and enables precise servo loop control during speed regulation and torque applications.

Q: Why does PMB31B-00216-02 include flying leads with MS connectors?

A: The motor integrates flying leads with MS connectors for stable connections. They provide secure wiring and reduce the risk of vibration-induced disconnection during operation.

Q: How does PMB31B-00216-02 achieve torque with a continuous stall rating?

A: The continuous stall torque of 2.1 Nm allows holding a load without motion. It provides sustained torque capacity when shaft rotation is restricted.

Q: Do PMB31B-00216-02 speed ratings affect motor flexibility in use?

A: Yes, the rated speed of 2900 RPM supports standard servo functions. The maximum 4300 RPM ensures flexibility when higher speed operation is required.


Internal Product Review

  • ‘‘The Pacific Scientific PMB31B-00216-02 servo motor offers reliable torque control with 1.9 Nm continuous torque and 4.1 Nm peak torque. The motor integrates 4096 ppr digital encoder feedback with a flat shaft design. The NEMA Size 34 frame ensures compatibility and efficient performance with a 2900 RPM rated speed.’’

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