Product Overview

The Allen-Bradley MPL-B320P-SJ72AA is a high-performance, low-inertia brushless servo motor from the Kinetix MP-Series. Engineered for high-speed automated systems, this motor utilizes high-energy rare earth magnets to provide exceptional torque-to-size ratios and rapid acceleration. It serves as a precision Integrated Axis component, delivering deterministic motion control for complex industrial applications such as electronic assembly, multi-axis packaging, and high-speed material handling.

Designed for seamless integration with Rockwell Automation’s Kinetix 5500, 5700, and 6000 drive platforms, the MPL-B320P-SJ72AA features a high-resolution feedback system that ensures absolute positioning and precise velocity regulation. Its brushless architecture significantly reduces maintenance requirements while maintaining peak efficiency in continuous-duty cycles.

Technical Specifications

• Manufacturer: Allen-Bradley / Rockwell Automation

• Model Number: MPL-B320P-SJ72AA

• Motor Series: Kinetix MP-Series (Low Inertia)

• Voltage Class: 400V AC

• Frame Size: 100 mm (Frame 3)

• Rated Output Power: 1.5 kW

• Rated Speed: 5000 RPM

• Continuous Stall Torque: 3.05 Nm

• Peak Stall Torque: 7.91 Nm

• Rotor Inertia: 0.000078 kg-m²

• Feedback Type: Multi-turn High-Resolution Encoder

• Connector Type: SpeedTec DIN Connector (180° Rotatable)

• Protection Rating: IP53 (Standard), IP66 (with optional shaft seal)

• Weight: 5.6 kg

Core Technical Characteristics

• Low-Inertia Rotor Design: The specialized rotor construction minimizes mass, allowing the motor to start and stop with extreme agility. This makes it a superior choice for "start-stop" applications where cycle time is critical.

• High-Resolution Feedback: Equipped with a multi-turn absolute encoder, the motor provides 2.1 million counts per revolution. This eliminates the need for homing cycles after power loss and ensures sub-micron positioning accuracy.

• SpeedTec DIN Connectivity: Features a right-angle, 180° rotatable connector system. This design provides a secure, quick-lock connection while allowing for flexible cable routing in tight machine enclosures.

• Advanced Thermal Management: The motor's winding design and frame geometry are optimized for heat dissipation, allowing for a 1.5 kW output within a compact 100mm frame size.

• Industrial Durability: With an operating temperature range of 0°C to 40°C and the ability to upgrade to IP66 protection, the motor is resilient against dust and moisture ingress, provided the correct mounting and shaft seals are utilized.

• Rare Earth Magnetization: The use of high-coercivity magnets ensures that the motor maintains its torque characteristics across the entire speed range up to 5000 RPM, preventing performance degradation during peak demand.

Primary Applications

The MPL-B320P-SJ72AA is optimized for high-performance motion axes, including:

• Packaging Machinery: High-speed labeling, capping, and pouch filling.

• Material Handling: Sorting systems and robotic pick-and-place units.

• Automotive Assembly: Precision fastening and component insertion.

• Printing and Converting: Tension control and web-fed processing.