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- MPL-A320H-SJ72AA
- Servo Motor
- USA
- 100 mm
- 3.7 kg
- Xiamen, China
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Product Overview
The Allen Bradley MPL-A320H-SJ72AA Servo Motor is a high-performance Kinetix MP-Series MPL low-inertia brushless AC servo motor designed for demanding industrial automation applications requiring accurate positioning, fast dynamic response, and reliable continuous-duty operation. As part of the Rockwell Automation MP-Series MPL family, this servo motor is optimized for seamless integration with Kinetix servo drives, delivering outstanding motion control performance for a wide range of industrial machinery.
The SJ72AA configuration features a single-turn high-resolution absolute encoder, a SpeedTEC right-angle 180° rotatable DIN connector, a keyed shaft extension, and no holding brake. This configuration is well suited for high-speed indexing, precision positioning, and synchronized multi-axis motion where a holding brake is not required. It belongs to the 230 V AC MP-Series MPL family with a 100 mm frame size, 3500 rpm rated speed, and approximately 1 kW continuous output power.
Featuring a 100 mm frame size and an approximate weight of 3.7 kg, the MPL-A320H-SJ72AA combines compact dimensions with excellent torque density. Its low-inertia rotor minimizes settling time while delivering rapid acceleration, smooth operation, and highly repeatable positioning accuracy.
Typical applications include packaging machinery, robotics, CNC machining centers, semiconductor manufacturing equipment, printing machinery, pharmaceutical production systems, electronic assembly lines, material handling equipment, and automated production cells.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Model | MPL-A320H-SJ72AA |
| 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 |
| Rated Speed | 3500 rpm |
| Continuous Output Power | 1 kW |
| Continuous Stall Torque | 3.05 Nm |
| Peak Torque | 7.91 Nm |
| Feedback Device | Single-turn High-Resolution Absolute Encoder (Hiperface) |
| 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-A320H-SJ72AA converts electrical energy supplied by a compatible Kinetix servo drive into precise rotary motion while continuously transmitting single-turn absolute encoder feedback for closed-loop motion control.
Typical Motion Control Architecture
Motion Controller
↓
Kinetix Servo Drive
↓
MPL-A320H-SJ72AA Servo Motor
↓
Mechanical Coupling
↓
Machine Axis
↓
Industrial Equipment
The integrated single-turn absolute encoder continuously reports shaft position to the servo drive, enabling accurate regulation of position, speed, and torque. Unlike incremental encoders, the absolute encoder provides immediate shaft position information after power-up within one mechanical revolution, reducing commissioning time and improving machine availability.
Primary operating functions include:
- Precision positioning
- Closed-loop speed regulation
- Dynamic torque control
- High-speed indexing
- Rapid acceleration and deceleration
- Smooth low-speed operation
- Single-turn absolute position feedback
- Electronic cam synchronization
- Coordinated multi-axis motion
- Continuous industrial performance
The low-inertia rotor minimizes response time while improving machine productivity and positioning accuracy.
Role in Industrial Control Systems
Within industrial automation systems, the MPL-A320H-SJ72AA serves 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-SJ72AA Servo Motor
↓
Precision Coupling
↓
Machine Axis
↓
Industrial Equipment
The servo motor delivers accurate and repeatable motion, enabling synchronized machine operation, high production efficiency, and reliable 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:
- CNC machining centers
- Milling machines
- Precision 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
- Inspection equipment
- Conveyor automation
- 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 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-SJ72AA | 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-A320H-SJ72AA | AC Servo Motor | Single-turn absolute encoder without brake |
| MPL-A320H-SJ74AA | AC Servo Motor | Single-turn absolute encoder with holding brake |
| MPL-A320H-MJ72AA | AC Servo Motor | Multi-turn absolute encoder |
| MPL-A320H-HJ72AA | AC Servo Motor | Incremental 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 3500 rpm
- Continuous output power of 1 kW
- Continuous stall torque of 3.05 Nm
- Integrated single-turn high-resolution absolute encoder
- SpeedTEC quick-connect 180° rotatable connector
- Keyed shaft extension
- 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-SJ72AA?
The MPL-A320H-SJ72AA is a Kinetix MP-Series MPL low-inertia AC servo motor equipped with a single-turn high-resolution absolute encoder for precision industrial motion control.
What is its primary function?
Its primary function is to provide accurate 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-A320H-SJ72AA is supplied without a holding brake.
Which drive systems are compatible?
It is compatible with Allen Bradley Kinetix 2000, 300, 350, 5500, 6000, 6200, 6500, and 7000 servo drive families.
Which industries commonly use this servo motor?
Typical industries include packaging, robotics, semiconductor manufacturing, CNC machining, pharmaceutical production, electronics manufacturing, material handling, and automated assembly.
What type of feedback does the motor use?
The motor uses a single-turn high-resolution absolute encoder with Hiperface protocol, providing immediate position feedback within one shaft revolution.
Where is the servo motor typically installed?
It is commonly installed on robotic axes, CNC machines, conveyor positioning systems, packaging equipment, semiconductor machinery, and precision manufacturing equipment.
Why choose a low-inertia servo motor?
A low-inertia servo motor provides faster acceleration, shorter settling time, higher positioning accuracy, and improved overall machine productivity.
Conclusion
The Allen Bradley MPL-A320H-SJ72AA 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 single-turn high-resolution absolute encoder, a keyed shaft extension, and a SpeedTEC quick-connect interface, it delivers exceptional positioning accuracy, rapid dynamic response, and dependable long-term operation.
With an approximate weight of 3.7 kg, the MPL-A320H-SJ72AA 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, and EtherNet/IP communication systems, it enhances machine productivity, improves positioning performance, and supports long-term industrial reliability.