PMB31B-00116-01
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The PMB31B-00116-01 brushless servomotor features NEMA Size 34, a peak torque of 4.56 Nm, an encoder resolution of 4096 ppr, and flying leads with AMP connectors. Part of the PMB Brushless Servomotors series by Pacific Scientific, it offers a typical rated speed of 4400 RPM for reliable performance.
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Product Description:
The PMB31B-00116-01 Servo Motor is constructed with an IP40 type of construction, making it resistant to solid particles in controlled environments. This Pacific Scientific made motor has a rated speed of 2900 RPM, which enables rapid rotation for high-demand motion requirements.
It has a continuous stall torque of 2.11 Nm, offering continuous torque delivery during long periods of operation without performance degradation. This motor employs a flat shaft type that is meant for safe mating with mechanical parts with low slippage. Its electrical operation is characterized by a line-to-line resistance of 7.6 Ohms, which allows for efficient flow of current and regulated dissipation of heat. This brushless servo motor’s power compatibility is flexible, as it can be operated at either 240 VAC or 320 VDC. The PMB31B-00116-01 motor has a continuous stall current of 2.66 ARMS so that it can sustain torque output for a long time without thermal overload. Under stall conditions, this motor demands a nominal current supply of 2.7 ARMS, which exactly corresponds to obtaining its rated stall torque. The mechanical efficiency of this motor is supported by a 0.79 Nm/ARMS torque constant, providing a consistent torque per ampere of RMS current. The inertia of this motor’s rotor at 0.137×10⁻³ kgm² ensures rapid acceleration and deceleration to support applications that demand dynamic speed adjustments.
The viscous damping coefficient of this brushless motor is 0.0124 Nm/kRPM, which ensures minimal vibration and stability at high-speed operations. The PMB31B-00116-01 servo motor incorporates a thermal time constant of 28 minutes to ensure adequate heat absorption and dissipation during long duty cycles. It performs exponentially well within an ambient temperature operating range of 0 to 45 °C, while retaining high efficiency and protection. Its accuracy is improved with an encoder resolution of 4096 PPR to guarantee precise tracking of position and speed feedback.
Frequently Asked Questions about PMB31B-00116-01:
Q: Why is a torque constant of 0.79 Nm/ARMS important in this motor?
A: It ensures predictable torque output for every ampere of current. This improves control precision in dynamic motion applications.
Q: How does the flat shaft design of PMB31B-00116-01 help in integration?
A: The flat shaft allows secure coupling with load systems. This ensures mechanical stability and minimizes slippage during continuous operation.
Q: What role does the viscous damping coefficient of 0.0124 Nm/kRPM play?
A: It minimizes vibrations during motor operation. This enhances stability and reduces wear in long-term use.
Q: How does the 28-minute thermal time constant support PMB31B-00116-01 performance?
A: It provides longer tolerance against rising heat during load cycles. This ensures dependable operation under continuous duty conditions.
Q: Why is the encoder resolution of 4096 PPR crucial in this motor?
A: It provides fine measurement of motor rotation. This is essential for applications requiring precise position and speed feedback.
