Allen-Bradley MPL-B4540F-SJ72AA MP-Series Servo Motor

Product Overview

The Allen-Bradley MPL-B4540F-SJ72AA is a MP-Series Low-Inertia Brushless AC Servo Motor from Rockwell Automation's Kinetix MP-Series family. It is designed for high-performance motion control applications requiring excellent positioning accuracy, fast dynamic response, and reliable operation. The motor is commonly paired with Kinetix servo drives in CNC machinery, packaging equipment, robotics, and automated production systems.

Main Specifications

• Manufacturer: Allen-Bradley (Rockwell Automation)
• Model: MPL-B4540F-SJ72AA
• Series: MP-Series Low-Inertia Servo Motor
• Product Type:
  • AC Servo Motor
  • Brushless Permanent Magnet Servo Motor
  • Rotary Servo Motor
• Voltage Class: 460 VAC
• Frame Size: 165 mm
• Magnetic Stack Length: 4.0 in (102 mm)
• Rated Speed: 3000 rpm
• Rated Output Power: Approximately 5.5 kW
• Rated Torque: Approximately 17.5 N·m
• Maximum Speed: Up to 5000 rpm
• Feedback: High-resolution Multi-turn Absolute Encoder (Hiperface)
• Shaft: Keyed Shaft
• Holding Brake: 24 VDC Holding Brake
• Shaft Seal: Yes
• Protection Rating: IP65 (motor housing)

Technical Functions

The MPL-B4540F-SJ72AA provides:

• High-precision position control
• Closed-loop speed regulation
• Accurate torque control
• Fast acceleration and deceleration
• Smooth servo motion
• High-resolution encoder feedback

Working principle:

Motion Controller → Kinetix Servo Drive → MPL-B4540F-SJ72AA Servo Motor → Mechanical Motion

Features & Advantages

• Original Allen-Bradley MP-Series servo motor
• Low-inertia rotor for rapid response
• High torque density
• High-resolution absolute encoder
• Integrated 24 VDC holding brake
• Brushless maintenance-free design
• IP65 enclosure for harsh industrial environments
• High positioning accuracy and repeatability

Applications

Used in:

• CNC machining centers
• Industrial robots
• Packaging machinery
• Printing equipment
• Material handling systems
• Semiconductor manufacturing equipment
• Automated assembly lines

Typical applications:

• Servo axis control
• Precision positioning
• High-speed indexing
• Automated motion control

Compatible Equipment

Commonly used with:

• Allen-Bradley Kinetix 6000 Servo Drives
• Allen-Bradley Kinetix 6500 Servo Drives
• Allen-Bradley Kinetix 5700 Servo Drives
• ControlLogix Motion Controllers
• Studio 5000 Logix Designer