PMB31B-10114-01
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The PMB31B-10114-01 is a Brushless Servo Motor manufactured by Pacific Scientific. Part of the PMB Brushless Servomotors series, it features 2048 ppr encoder resolution and NEMA Size 34 frame. The motor uses Neodymium-Iron-Boron magnets for high performance and operates with a recommended voltage of 36V AC or 48V DC.
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Product Description:
The Pacific Scientific PMB31B-10114-01 Brushless Servo Motor has a digital encoder with commutation rated at 2048 PPR, providing accurate motion feedback. This encoder rating supports precise monitoring of shaft position so that stable synchronization for automation equipment can be maintained.
The voltage constant of the PMB31B-10114-01 motor is set at 0.49 Vrms/rad/sec, which establishes the interrelation of applied voltage and angular velocity. To address dynamic requirements, this motor has an 8.0 Arms current at maximum torque, providing fast acceleration and stability in transmitting maximum output. This motor’s rated torque is 1.90 Nm to provide reliable continuous power for applications requiring constant motion over long operational cycles. At 6.26 Nm maximum torque, this servo motor supplies short-duration high output, facilitating acceleration, start-stop operations, and momentary overloads. This motor’s line-to-line inductance of 19.6 mH facilitates controlled current rise, ripple reduction, and assists in accurate servo performance in closed-loop operation. The thermal efficiency of this servo motor is provided with a thermal resistance of 1.08 °C/Watt for reliable heat dissipation and defense against thermal overload. Similarly, this motor’s static friction rating of 0.09 Nm facilitates low startup resistance and stable torque delivery during different loads.
This brushless motor is built within a NEMA Size 34 frame, enabling standardized mounting on a variety of industrial platforms. Its shaft with an incorporated shaft seal protects environmental entry, ensuring shaft integrity under tough use. With a weight of only 2.5 kg, the design of the PMB31B-10114-01 motor ensures ruggedness with easy-to-handle installation. Its electrical connectivity is provided with flying leads with AMP connectors to allow easy integration and safe transmission of current. This motor is installed for deployment at a maximum installation altitude of 1000 meters above sea level, with the assurance of stable operation without adjustment in most conditions.
Frequently Asked Questions about PMB31B-10114-01:
Q: Why is the static friction value of 0.09 Nm important?
A: Low static friction reduces startup resistance, allowing smoother motion. It minimizes torque loss and improves efficiency in frequent stop-start cycles.
Q: How does the digital encoder benefit the PMB31B-10114-01 motor?
A: The encoder provides high-resolution 2048 PPR feedback, allowing precise speed regulation. This ensures accurate positioning and repeatability in automation tasks.
Q: How does the 19.6 mH line-to-line inductance help performance?
A: Higher inductance ensures smoother current regulation during operation. It reduces electrical ripple and supports stable torque output at varying speeds.
Q: Why is the voltage constant of 0.49 Vrms/rad/sec significant in PMB31B-10114-01?
A: This constant defines the voltage-to-speed relationship, making control predictable. It helps optimize motor drive settings for efficient performance.
Q: What role does the shaft seal play in this motor?
A: The shaft seal protects internal components from dust and contaminants. It extends motor lifespan and reduces the risk of performance degradation.
