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- MPL-A320P-HJ72AA
- Servo Motor
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- 100 mm
- 3.7 kg
- Xiamen, China
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Product Overview
The Allen Bradley MPL-A320P-HJ72AA Servo Motor is a high-performance Kinetix MP-Series MPL low-inertia brushless AC servo motor designed for demanding industrial automation applications requiring exceptional positioning accuracy, rapid acceleration, and reliable continuous-duty operation. As a member of the Rockwell Automation MP-Series MPL family, this servo motor is engineered to operate seamlessly with Kinetix servo drives, providing highly responsive closed-loop control for advanced motion systems.
The HJ72AA configuration features a 2000-line incremental encoder, a SpeedTEC right-angle 180° rotatable DIN connector, a keyed shaft extension, and no holding brake. The motor belongs to the 230 V AC MP-Series MPL family and features a 100 mm frame size, a 50.8 mm magnet stack length, and a 5000 rpm rated speed. Its low-inertia rotor design provides outstanding acceleration and deceleration characteristics while maintaining excellent speed stability and positioning accuracy.
Featuring a 100 mm frame size and an approximate weight of 3.7 kg, the MPL-A320P-HJ72AA delivers an excellent balance of compact dimensions, high power density, and dynamic performance. It is widely used in packaging machinery, robotics, CNC machining centers, semiconductor manufacturing equipment, electronic assembly systems, pharmaceutical production lines, printing machinery, material handling equipment, and other precision automation applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Model | MPL-A320P-HJ72AA |
| Product Series | Kinetix MP-Series MPL |
| Product Type | AC Servo Motor |
| Motor Type | Low-Inertia Permanent Magnet Brushless Servo Motor |
| Voltage Class | 230 VAC |
| Frame Size | 100 mm |
| Magnet Stack Length | 50.8 mm |
| Rated Speed | 5000 rpm |
| Continuous Output Power | 1.3 kW |
| Continuous Stall Torque | 3.05 Nm |
| Peak Stall Torque | 7.91 Nm |
| Feedback Device | 2000-Line Incremental Encoder |
| Brake | No Brake |
| Shaft Type | Keyed Shaft Extension |
| Connector Type | SpeedTEC Right-Angle 180° Rotatable DIN Connector |
| Mounting Standard | IEC Metric Flange |
| Cooling Method | Natural Convection |
| Weight | Approximately 3.7 kg |
Function and Working Principle
The MPL-A320P-HJ72AA converts electrical energy supplied by a compatible Kinetix servo drive into highly accurate rotary motion while continuously transmitting incremental encoder feedback for precise closed-loop control.
Typical Motion Control Architecture
Motion Controller
↓
Kinetix Servo Drive
↓
MPL-A320P-HJ72AA Servo Motor
↓
Mechanical Coupling
↓
Machine Axis
↓
Industrial Equipment
The integrated 2000-line incremental encoder continuously monitors shaft position and rotational speed, transmitting high-resolution feedback to the servo drive. The drive dynamically regulates motor current to maintain accurate position, speed, and torque throughout the operating cycle.
Primary operating functions include:
- Precision positioning
- Closed-loop speed regulation
- Dynamic torque control
- High-speed indexing
- Rapid acceleration and deceleration
- Smooth low-speed operation
- High-resolution incremental encoder feedback
- Electronic cam synchronization
- Coordinated multi-axis motion
- Continuous industrial performance
The motor’s low-inertia rotor minimizes settling time while maximizing machine productivity, motion accuracy, and overall system efficiency.
Role in Industrial Control Systems
Within industrial automation systems, the MPL-A320P-HJ72AA functions as the precision motion actuator responsible for executing positioning commands generated by advanced motion controllers.
Typical automation architecture:
ControlLogix PLC
↓
Motion Control Module
↓
Kinetix Servo Drive
↓
MPL-A320P-HJ72AA Servo Motor
↓
Precision Coupling
↓
Machine Axis
↓
Industrial Equipment
The servo motor provides accurate and repeatable motion, enabling synchronized machine operation, high production efficiency, reduced cycle times, and consistent manufacturing quality.
Industrial Applications
Packaging Machinery
Typical applications include:
- Cartoning machines
- Filling equipment
- Wrapping machines
- Labeling systems
- Pick-and-place equipment
Robotics
Suitable for:
- Industrial robot arms
- SCARA robots
- Delta robots
- Six-axis robotic systems
- Automated assembly cells
CNC Machinery
Frequently installed in:
- CNC machining centers
- Precision milling machines
- CNC lathes
- Laser cutting systems
- Grinding equipment
Semiconductor and Electronics Manufacturing
Ideal for:
- Wafer handling systems
- PCB assembly equipment
- Precision positioning systems
- Inspection machinery
- Cleanroom automation
Material Handling
Common applications include:
- Conveyor positioning
- Warehouse automation
- Automated storage systems
- Sorting equipment
- Palletizing machinery
Pharmaceutical and Food Processing
Widely used in:
- Packaging lines
- Filling systems
- Conveyor automation
- Inspection equipment
- Precision production machinery
Installation and System Integration
Before installation, engineers should verify:
- Kinetix servo drive compatibility
- Mechanical mounting dimensions
- Shaft alignment
- Coupling selection
- Encoder cable integrity
- Motor power wiring
- Protective grounding
- Mechanical load capacity
- Environmental operating conditions
- Motion controller configuration
Recommended Installation Procedure
- Disconnect system power.
- Mount the servo motor securely.
- Align the motor shaft with the driven equipment.
- Install the coupling or transmission assembly.
- Connect the motor power cable.
- Connect the encoder feedback cable.
- Verify protective grounding.
- Restore system power.
- Configure motor parameters.
- Perform motor identification.
- Verify motor rotation.
- Tune servo parameters.
- Verify positioning accuracy.
- Perform complete functional testing.
- Complete commissioning documentation.
Proper installation maximizes positioning accuracy, reduces vibration, and extends motor service life.
Compatible System Components
| Component | Function |
|---|---|
| Allen Bradley Kinetix Servo Drive | Servo motor control |
| ControlLogix PLC | Motion controller |
| CompactLogix PLC | Machine automation |
| MPL-A320P-HJ72AA | Precision servo motor |
| Motion Control Module | Multi-axis synchronization |
| EtherNet/IP Network | Industrial communication |
| PanelView HMI | Operator interface |
| Precision Coupling | Torque transmission |
| Ball Screw Assembly | Linear positioning |
| Industrial Power Supply | System power |
Recommended Alternative Models
| Model | Product Type | Typical Application |
|---|---|---|
| MPL-A320P-HJ72AA | AC Servo Motor | Incremental encoder, keyed shaft, no brake |
| MPL-A320P-HJ74AA | AC Servo Motor | Incremental encoder, keyed shaft, holding brake |
| MPL-A320P-MJ72AA | AC Servo Motor | Multi-turn absolute encoder |
| MPL-A320P-SJ72AA | AC Servo Motor | Single-turn absolute encoder |
| Kinetix VP Series | AC Servo Motor | Advanced industrial motion control |
Key Advantages
- Compact 100 mm frame size
- Low-inertia rotor for rapid dynamic response
- Rated speed of 5000 rpm
- Continuous output power of 1.3 kW
- Continuous stall torque of 3.05 Nm
- Peak stall torque of 7.91 Nm
- Integrated 2000-line incremental encoder
- High positioning accuracy
- SpeedTEC quick-connect rotatable connector
- Keyed shaft extension
- Excellent dynamic performance
- Seamless integration with Allen Bradley Kinetix servo drives
- Suitable for continuous industrial operation
- Approximate weight 3.7 kg
Technical FAQs
What is the Allen Bradley MPL-A320P-HJ72AA?
The MPL-A320P-HJ72AA is a Kinetix MP-Series MPL low-inertia AC servo motor equipped with a 2000-line incremental encoder for high-speed industrial motion control.
What is its primary function?
Its primary function is to provide precise closed-loop control of position, speed, and torque for industrial automation equipment.
What is the frame size?
The motor features a 100 mm frame size.
What is the approximate weight?
The servo motor weighs approximately 3.7 kg.
Does this model include a holding brake?
No. The MPL-A320P-HJ72AA is supplied without a holding brake.
Which drive systems are compatible?
It is compatible with Allen Bradley Kinetix 2000, Kinetix 300, Kinetix 350, Kinetix 5500, Kinetix 6000, Kinetix 6200/6500, Kinetix 7000, and Ultra 3000 servo drive platforms.
Which industries commonly use this servo motor?
Typical industries include packaging, robotics, semiconductor manufacturing, CNC machining, electronics manufacturing, pharmaceutical production, food processing, and automated assembly.
What type of feedback does the motor use?
The motor uses a 2000-line incremental encoder, providing high-resolution position and speed feedback for accurate servo control.
Where is the servo motor typically installed?
It is commonly installed on robotic axes, CNC machines, conveyor positioning systems, packaging equipment, semiconductor machinery, and other precision manufacturing equipment.
Why choose a low-inertia servo motor?
A low-inertia servo motor enables faster acceleration, reduced settling time, higher positioning accuracy, improved response, and greater machine productivity.
Conclusion
The Allen Bradley MPL-A320P-HJ72AA Servo Motor is a compact, high-performance motion solution engineered for demanding industrial automation applications. Featuring a 100 mm frame size, a low-inertia rotor, a 2000-line incremental encoder, a 5000 rpm rated speed, a keyed shaft extension, and a SpeedTEC quick-connect interface, it delivers exceptional positioning accuracy, rapid dynamic response, and dependable long-term performance.
With an approximate weight of 3.7 kg, the MPL-A320P-HJ72AA integrates easily into advanced machine designs while providing reliable precision motion control. When combined with compatible Allen Bradley Kinetix servo drives, ControlLogix PLCs, motion controllers, EtherNet/IP communication systems, and industrial automation equipment, it enhances machine productivity, improves positioning performance, and supports long-term operational reliability.