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- MPL-A320P-HK72AA
- Servo Motor
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- 100 mm
- 3.7 kg
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Product Overview
The Allen Bradley MPL-A320P-HK72AA Servo Motor is a premium Kinetix MP-Series MPL low-inertia brushless AC servo motor engineered for demanding industrial motion control applications requiring high-speed operation, precise positioning, and reliable continuous-duty performance. As a member of the Rockwell Automation MP-Series MPL family, this servo motor integrates seamlessly with Kinetix servo drive systems, delivering accurate closed-loop control of position, speed, and torque for advanced automation equipment.
The HK72AA configuration features a 2000-line incremental encoder, a SpeedTEC right-angle 180° rotatable DIN connector, a keyless shaft extension, and no holding brake. Designed for 230 VAC servo systems, the motor incorporates a 100 mm frame size, a 50.8 mm magnet stack length, and a 5000 rpm rated speed. The keyless shaft design improves concentricity, minimizes backlash, and provides excellent torque transmission when used with precision locking assemblies.
Featuring a 100 mm frame size and an approximate weight of 3.7 kg, the MPL-A320P-HK72AA combines compact dimensions with high power density and excellent dynamic performance. Its low-inertia rotor enables rapid acceleration and deceleration while maintaining outstanding positioning repeatability and smooth torque output.
Typical applications include robotics, packaging machinery, CNC machining centers, semiconductor manufacturing equipment, electronic assembly systems, pharmaceutical production lines, material handling equipment, printing machinery, and automated manufacturing cells.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Model | MPL-A320P-HK72AA |
| 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 |
| Feedback Device | 2000-Line Incremental Encoder |
| Brake | No Brake |
| Shaft Type | Keyless 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-HK72AA converts electrical energy supplied by a compatible Kinetix servo drive into highly accurate rotary motion while continuously transmitting encoder feedback for precise closed-loop motion control.
Typical Motion Control Architecture
Motion Controller
↓
Kinetix Servo Drive
↓
MPL-A320P-HK72AA Servo Motor
↓
Keyless 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 precise position, speed, and torque throughout the operating cycle. The keyless shaft extension provides high concentricity, eliminates keyway backlash, and enables secure torque transmission using precision locking devices.
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
- Precision keyless shaft power transmission
The low-inertia rotor minimizes settling time while maximizing machine productivity, positioning accuracy, and overall system efficiency.
Role in Industrial Control Systems
Within industrial automation systems, the MPL-A320P-HK72AA 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-HK72AA Servo Motor
↓
Keyless Locking Assembly
↓
Machine Axis
↓
Industrial Equipment
The servo motor provides accurate and repeatable motion, enabling synchronized machine operation, 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
- Keyless locking assembly compatibility
- Shaft alignment
- 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.
- Install the keyless locking assembly.
- Align the motor shaft with the driven equipment.
- 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-HK72AA | Precision servo motor |
| Motion Control Module | Multi-axis synchronization |
| EtherNet/IP Network | Industrial communication |
| PanelView HMI | Operator interface |
| Keyless Locking Assembly | Torque transmission |
| Ball Screw Assembly | Linear positioning |
| Industrial Power Supply | System power |
Recommended Alternative Models
| Model | Product Type | Typical Application |
|---|---|---|
| MPL-A320P-HK72AA | AC Servo Motor | Incremental encoder, keyless shaft, no brake |
| MPL-A320P-HK74AA | AC Servo Motor | Incremental encoder, keyless shaft, holding brake |
| MPL-A320P-MK72AA | AC Servo Motor | Multi-turn absolute encoder, keyless shaft |
| MPL-A320P-SK72AA | AC Servo Motor | Single-turn absolute encoder, keyless shaft |
| 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
- Integrated 2000-line incremental encoder
- Precision keyless shaft extension
- SpeedTEC quick-connect rotatable connector
- High positioning accuracy
- Excellent torque transmission
- Reduced mechanical backlash
- 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-HK72AA?
The MPL-A320P-HK72AA is a Kinetix MP-Series MPL low-inertia AC servo motor equipped with a 2000-line incremental encoder and a keyless shaft extension 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-HK72AA is supplied without a holding brake.
What is the advantage of a keyless shaft?
A keyless shaft provides improved concentricity, eliminates keyway backlash, delivers higher torque transmission accuracy, and simplifies installation with precision locking assemblies.
Which drive systems are compatible?
It is compatible with Allen Bradley Kinetix servo drive platforms designed for MP-Series MPL motors.
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 closed-loop 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.
Conclusion
The Allen Bradley MPL-A320P-HK72AA 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 keyless 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-HK72AA 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.