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- MPL-A320H-MJ72AA
- Servo Motor
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- 100 mm
- 3.7 kg
- Xiamen, China
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Product Overview
The Allen Bradley MPL-A320H-MJ72AA Servo Motor is a premium Kinetix MP-Series MPL low-inertia brushless AC servo motor designed for high-speed, high-precision industrial motion control applications. As a member of the Rockwell Automation MP-Series MPL family, this servo motor delivers exceptional dynamic response, precise positioning accuracy, and reliable continuous-duty performance when paired with compatible Kinetix servo drives. The MJ72AA configuration incorporates a multi-turn high-resolution absolute encoder, a SpeedTEC right-angle rotatable DIN connector, and no holding brake, making it ideal for advanced automation systems that require accurate positioning and rapid motion.
Featuring a 100 mm frame size and an approximate weight of 3.7 kg, the MPL-A320H-MJ72AA provides an excellent balance of compact dimensions and high torque output. Its low-inertia rotor enables rapid acceleration and deceleration while maintaining excellent speed stability and repeatable positioning in demanding industrial environments.
Designed for operation on the 460 V AC platform with a maximum rated speed of 6000 rpm, the motor is widely used in packaging machinery, robotics, CNC machining centers, printing equipment, semiconductor manufacturing, pharmaceutical production, electronic assembly, material handling systems, and automated production lines.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Model | MPL-A320H-MJ72AA |
| Product Series | Kinetix MP-Series MPL |
| Product Type | AC Servo Motor |
| Motor Type | Low-Inertia Permanent Magnet Brushless Servo Motor |
| Voltage Class | 460 VAC |
| Frame Size | 100 mm |
| Rated Maximum Speed | 6000 rpm |
| Feedback Device | Multi-turn High-Resolution Absolute Encoder |
| Brake | No Brake |
| Connector Type | SpeedTEC Right-Angle Rotatable DIN Connector |
| Shaft Type | Keyed Shaft Extension |
| Mounting Standard | IEC Metric Flange |
| Cooling Method | Natural Convection |
| Weight | Approximately 3.7 kg |
Function and Working Principle
The MPL-A320H-MJ72AA converts electrical energy supplied by a compatible Kinetix servo drive into highly accurate rotary motion while continuously transmitting absolute encoder feedback for closed-loop control.
Typical Motion Control Architecture
Motion Controller
↓
Kinetix Servo Drive
↓
MPL-A320H-MJ72AA Servo Motor
↓
Mechanical Transmission
↓
Machine Axis
↓
Industrial Equipment
The integrated multi-turn absolute encoder continuously reports shaft position to the servo drive, enabling accurate position, speed, and torque regulation. Because the encoder retains position information through multiple shaft revolutions, system recovery after power interruption is faster and more efficient.
Primary operating functions include:
- High-precision positioning
- Closed-loop speed regulation
- Dynamic torque control
- High-speed indexing
- Rapid acceleration and deceleration
- Smooth low-speed operation
- Absolute position feedback
- Electronic cam synchronization
- Coordinated multi-axis motion
- Continuous industrial performance
The low-inertia rotor minimizes settling time and enhances machine productivity.
Role in Industrial Control Systems
Within industrial automation systems, the MPL-A320H-MJ72AA 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-A320H-MJ72AA Servo Motor
↓
Gearbox / Ball Screw / Timing Belt
↓
Machine Axis
↓
Industrial Equipment
The servo motor provides highly accurate and repeatable motion, enabling synchronized machine operation, improved production efficiency, and precise process control.
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:
- Machining centers
- CNC milling machines
- Precision lathes
- Laser cutting equipment
- Grinding machines
Semiconductor and Electronics Manufacturing
Ideal for:
- Wafer handling systems
- PCB assembly equipment
- Inspection systems
- Electronic production lines
- Precision positioning equipment
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 machines
- Inspection systems
- Conveyor automation
- Precision production equipment
Installation and System Integration
Before installation, engineers should verify:
- Kinetix servo drive compatibility
- Mechanical mounting dimensions
- Shaft alignment
- Coupling selection
- Encoder cable connections
- Motor power wiring
- Protective grounding
- Mechanical load capacity
- Environmental conditions
- Motion controller configuration
Recommended Installation Procedure
- Disconnect system power.
- Securely mount the servo motor.
- Align the motor shaft with the driven mechanism.
- 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.
- Test motor rotation.
- Tune servo parameters.
- Verify positioning accuracy.
- Perform functional testing.
- Complete commissioning documentation.
Proper installation maximizes positioning accuracy 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-A320H-MJ72AA | Precision servo motor |
| Motion Control Module | Multi-axis synchronization |
| EtherNet/IP Network | Industrial communication |
| PanelView HMI | Operator interface |
| Precision Gearbox | Torque transmission |
| Ball Screw Assembly | Linear positioning |
| Industrial Power Supply | System power |
Recommended Alternative Models
| Model | Product Type | Typical Application |
|---|---|---|
| MPL-A320H-MJ72AA | AC Servo Motor | Absolute encoder precision motion control |
| MPL-A320H-MJ74AA | AC Servo Motor | Absolute encoder with holding brake |
| MPL-A320H-HJ72AA | AC Servo Motor | Incremental encoder applications |
| MPL-A320H-HJ74AA | AC Servo Motor | Incremental encoder with brake |
| Kinetix VP Series | AC Servo Motor | Advanced motion control systems |
Key Advantages
- Compact 100 mm frame size
- Low-inertia rotor for rapid dynamic response
- Rated speed up to 6000 rpm
- Integrated multi-turn high-resolution absolute encoder
- High positioning accuracy
- Smooth torque output
- SpeedTEC quick-connect rotatable connector
- Seamless integration with Allen Bradley Kinetix servo drives
- Rugged industrial construction
- Suitable for continuous industrial operation
- Approximate weight 3.7 kg
Technical FAQs
What is the Allen Bradley MPL-A320H-MJ72AA?
The MPL-A320H-MJ72AA is a Kinetix MP-Series MPL low-inertia AC servo motor equipped with a multi-turn high-resolution absolute encoder for precision industrial motion control.
What is its primary function?
Its primary function is to provide precise closed-loop control of position, speed, and torque in automated machinery.
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-A320H-MJ72AA is supplied without a holding brake, making it suitable for applications where external load holding is not required.
Which drive systems are compatible?
It is designed for use with compatible Allen Bradley Kinetix servo drives and Logix-based motion control systems.
Which industries commonly use this servo motor?
Typical industries include packaging, robotics, semiconductor manufacturing, CNC machining, pharmaceutical production, food processing, material handling, printing, and automated assembly.
What type of feedback does the motor use?
The motor uses a multi-turn high-resolution absolute encoder, providing precise position feedback while retaining multi-revolution position information.
Where is the servo motor typically installed?
It is commonly installed on robotic axes, CNC machines, conveyor positioning systems, packaging equipment, and precision manufacturing machinery.
Why is a low-inertia servo motor important?
A low-inertia servo motor provides faster acceleration, shorter settling times, higher positioning accuracy, improved dynamic response, and greater overall machine productivity.
Conclusion
The Allen Bradley MPL-A320H-MJ72AA 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 multi-turn high-resolution absolute encoder, and a SpeedTEC quick-connect interface, it delivers exceptional positioning accuracy, rapid dynamic response, and reliable long-term operation.
With an approximate weight of 3.7 kg, the MPL-A320H-MJ72AA integrates easily into high-performance machine designs while providing dependable precision motion control. When combined with compatible Allen Bradley Kinetix servo drives, ControlLogix PLCs, motion controllers, and EtherNet/IP communication systems, it enhances machine productivity, improves positioning performance, and supports reliable industrial automation across a broad range of applications.