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- MPL-A1520U-HJ72AA
- Servo Motor
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- 63 mm
- 1.2 kg
- Xiamen, China
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Product Overview
The Allen Bradley MPL-A1520U-HJ72AA Servo Motor is a premium Kinetix MP-Series MPL low-inertia AC servo motor developed by Rockwell Automation for high-performance industrial motion control applications. Featuring a 63 mm frame size, this compact servo motor delivers exceptional positioning accuracy, rapid acceleration, stable torque output, and excellent dynamic response for precision automation systems.
As part of the Allen-Bradley MP-Series MPL family, the MPL-A1520U-HJ72AA is designed for seamless integration with Kinetix servo drives, providing precise closed-loop control of speed, torque, and position. This model features a 230 V AC voltage class, 7000 RPM rated speed, a 50.8 mm magnet stack, a 2000-line incremental encoder, a keyed shaft extension, a SpeedTEC right-angle quick-connect connector, and no holding brake, making it suitable for high-speed industrial applications where external braking is not required. It has been discontinued by Rockwell Automation, with the MPL-A1520U-EJ72AA identified as the recommended replacement.
Its low-inertia rotor design minimizes response time while maximizing positioning accuracy and machine productivity. The compact mechanical construction also allows installation in equipment where available space is limited while maintaining outstanding reliability and long service life.
With a 63 mm frame size and an approximate weight of 1.2 kg, the MPL-A1520U-HJ72AA is widely used in robotics, packaging machinery, CNC machine tools, semiconductor manufacturing, electronics assembly, medical equipment, textile machinery, automated material handling systems, and precision production lines.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Model | MPL-A1520U-HJ72AA |
| Product Series | Kinetix MP-Series MPL |
| Product Type | AC Servo Motor |
| Motor Type | Low-Inertia Permanent Magnet Servo Motor |
| Voltage Class | 230 V AC |
| Rated Speed | 7000 RPM |
| Continuous Torque | 0.49 Nm |
| Frame Size | 63 mm |
| Magnet Stack Length | 50.8 mm |
| Feedback System | 2000-Line Incremental Encoder |
| Shaft Type | Keyed Shaft Extension |
| Brake | No Holding Brake |
| Connector Type | SpeedTEC DIN Connector, Right Angle, 180° Rotatable |
| Mounting Method | IEC Metric Flange Mount |
| Cooling Method | Natural Cooling |
| Typical Application | Precision Motion Control |
| Weight | Approximately 1.2 kg |
Function and Working Principle
The MPL-A1520U-HJ72AA converts electrical energy supplied by a compatible Kinetix servo drive into precise rotary motion while continuously transmitting encoder feedback for high-speed closed-loop motion control.
Typical Motion Control Architecture
Motion Controller
↓
Kinetix Servo Drive
↓
Allen Bradley MPL-A1520U-HJ72AA Servo Motor
↓
Mechanical Transmission
↓
Industrial Equipment
During operation, the servo drive continuously compares commanded values with encoder feedback and adjusts motor current in real time to maintain precise speed, torque, and positioning.
Its primary functions include:
- Precision positioning
- High-speed rotary motion
- Accurate torque control
- Rapid acceleration and deceleration
- Closed-loop incremental encoder feedback
- Smooth speed regulation
- High dynamic response
- Continuous motion monitoring
- Energy-efficient operation
- Reliable continuous-duty performance
The low-inertia rotor enables fast response while maintaining excellent positioning repeatability.
Role in Industrial Automation Systems
Within industrial automation systems, the MPL-A1520U-HJ72AA functions as the precision actuator responsible for converting servo drive commands into controlled mechanical movement.
Typical automation architecture:
PLC / Motion Controller
↓
Kinetix Servo Drive
↓
MPL-A1520U-HJ72AA Servo Motor
↓
Ball Screw / Gearbox / Belt Drive
↓
Industrial Machine
↓
Production Process
The servo motor delivers accurate positioning, stable torque output, and repeatable motion performance to improve machine productivity and manufacturing quality.
Industrial Applications
Packaging Machinery
Typical applications include:
- Filling machines
- Labeling equipment
- Cartoning systems
- Wrapping machinery
- Pick-and-place systems
Robotics
Suitable for:
- Robotic arms
- SCARA robots
- Collaborative robots
- Assembly robots
- Precision end-of-arm positioning
CNC Machinery
Frequently installed in:
- CNC machining centers
- Precision cutting machines
- Rotary indexing tables
- Tool changers
- Engraving equipment
Semiconductor and Electronics Manufacturing
Ideal for:
- PCB assembly equipment
- Wafer handling systems
- Electronic assembly machines
- Precision inspection equipment
- Positioning stages
Material Handling
Common applications include:
- Automated storage systems
- Conveyor positioning
- Sorting equipment
- Transfer systems
- Palletizing machinery
Medical Equipment
Widely used in:
- Laboratory automation
- Pharmaceutical production equipment
- Diagnostic instruments
- Precision dispensing systems
- Medical manufacturing machinery
Installation and System Integration
Before installation, engineers should verify:
- Compatible Kinetix servo drive selection
- Motion controller configuration
- Motor mounting alignment
- Shaft coupling alignment
- Power cable connections
- Encoder feedback cable integrity
- Protective grounding
- Mechanical load compatibility
- Environmental operating conditions
- Servo parameter configuration
Recommended Installation Procedure
- Disconnect system power.
- Mount the servo motor securely.
- Align the motor shaft with the driven mechanism.
- Install the shaft coupling.
- Connect the motor power cable.
- Connect the encoder feedback cable.
- Verify grounding.
- Inspect all electrical connections.
- Restore system power.
- Configure motor parameters in the servo drive.
- Tune the servo control loop.
- Verify motor rotation.
- Test positioning accuracy.
- Complete system commissioning.
Proper installation improves positioning precision, minimizes vibration, and maximizes equipment service life.
Compatible System Components
| Component | Function |
|---|---|
| MPL-A1520U-HJ72AA | Servo motor |
| Kinetix Servo Drive | Motion control |
| ControlLogix PLC | Central automation controller |
| CompactLogix PLC | Machine control |
| Motion Controller | Position and speed control |
| Incremental Encoder Feedback | Closed-loop feedback |
| EtherNet/IP Network | Industrial communication |
| HMI Panel | Operator interface |
| Precision Gearbox | Torque transmission |
| Ball Screw Assembly | Linear motion conversion |
Recommended Alternative Models
| Model | Product Type | Typical Application |
|---|---|---|
| MPL-A1520U-HJ72AA | Servo Motor | Incremental encoder motion control |
| MPL-A1520U-EJ72AA | Servo Motor | Single-turn encoder applications |
| MPL-A1520U-HJ74AA | Servo Motor | Incremental encoder with holding brake |
| MPL-A1520U-VJ72AA | Servo Motor | Multi-turn absolute encoder applications |
| Kinetix VPL Series | Servo Motor | Advanced industrial motion control |
Key Advantages
- Allen Bradley Kinetix MP-Series MPL platform
- Compact 63 mm frame size
- 230 V AC operation
- Low-inertia permanent magnet rotor
- Rated speed of 7000 RPM
- Continuous torque of 0.49 Nm
- 2000-line incremental encoder
- SpeedTEC quick-connect interface
- Excellent positioning accuracy
- High dynamic response
- Easy integration with Kinetix servo drives
- Approximate weight 1.2 kg
Technical FAQs
What is the Allen Bradley MPL-A1520U-HJ72AA?
The MPL-A1520U-HJ72AA is a Kinetix MP-Series low-inertia AC servo motor designed for precision industrial motion control applications.
What is its primary function?
Its primary function is to provide accurate rotary motion with precise speed, torque, and position control when operated with a compatible Kinetix servo drive.
Does this model include a holding brake?
No. The MPL-A1520U-HJ72AA is supplied without an integrated holding brake.
What is the frame size?
The motor features a 63 mm frame size.
What is the approximate weight?
The motor weighs approximately 1.2 kg.
Which servo drives are compatible?
It is designed for use with compatible Allen Bradley Kinetix servo drives, including Kinetix 2000, Kinetix 6000, Kinetix 7000, and Ultra 3000 systems.
Which industries commonly use this servo motor?
It is widely used in robotics, packaging machinery, CNC machining, semiconductor manufacturing, electronics assembly, medical equipment, material handling systems, and automated production lines.
Does the motor support closed-loop control?
Yes. It incorporates a 2000-line incremental encoder that provides continuous feedback for precise closed-loop motion control.
Is this model still available?
Rockwell Automation has discontinued the MPL-A1520U-HJ72AA and recommends the MPL-A1520U-EJ72AA as its replacement.
Is the MPL-A1520U-HJ72AA suitable for continuous industrial operation?
Yes. The motor is engineered for reliable long-term operation in demanding industrial automation environments.
Conclusion
The Allen Bradley MPL-A1520U-HJ72AA Servo Motor is a compact and highly responsive motion control solution designed for precision industrial automation. Featuring a low-inertia permanent magnet rotor, 7000 RPM rated speed, 0.49 Nm continuous torque, a 2000-line incremental encoder, and a SpeedTEC quick-connect interface, it delivers outstanding positioning accuracy, rapid response, and dependable closed-loop performance.
With a 63 mm frame size and an approximate weight of 1.2 kg, the MPL-A1520U-HJ72AA is ideal for compact machine designs requiring precision, reliability, and dynamic performance. When integrated with compatible Kinetix servo drives, ControlLogix or CompactLogix PLCs, motion controllers, and EtherNet/IP communication networks, it provides accurate motion control, increased productivity, and dependable long-term operation across a wide range of industrial automation applications.