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- MPL-A4540F-SK74AA
- Low-Inertia Brushless Servo Motors Product
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MPL-A4540F-SK74AA Servo Motor Product Introduction, Technical Parameters, Applications, Advantages and Model Recommendation Guide
1. Product Overview
Product Model: MPL-A4540F-SK74AA
Brand: Allen-Bradley
Product Series: MP-Series MPL Low-Inertia Brushless Servo Motor Series
Product Type: AC Rotary Servo Motor
Application Category: Industrial Motion Control Equipment
The MPL-A4540F-SK74AA is a high-performance low-inertia brushless AC servo motor designed for precision automation and advanced motion control applications.
This model belongs to the MP-Series MPL servo motor family and is developed for industrial systems that require high positioning accuracy, fast response speed, smooth operation, and reliable load control.
The motor adopts a 230V AC voltage class design with a 45 frame size and a 101.6 mm magnet stack length. It provides approximately 10.2 Nm continuous torque and a rated speed of 3000 RPM, offering a strong balance between dynamic response, torque capability, and compact mechanical dimensions.
The MPL-A4540F-SK74AA combines a low-inertia rotor structure with a single-turn high-resolution encoder feedback system. The encoder provides accurate position information for closed-loop control, helping improve machine repeatability, speed stability, and positioning performance.
This model is equipped with a keyed shaft extension, right-angle connector design, 180° rotatable connector structure, and integrated 24V DC holding brake.
The built-in brake improves mechanical stability when the motor stops, making the motor suitable for applications where the load requires secure holding during power-off conditions or standstill operation.
The keyed shaft structure provides a reliable mechanical connection between the motor and driven equipment, making it suitable for couplings, transmission systems, and industrial machine assemblies.
The MPL-A4540F-SK74AA is widely applied in packaging machinery, CNC equipment, robotics, semiconductor manufacturing equipment, electronic assembly systems, and automated production lines.
2. Product Brand and Series Information
| Item | Description |
|---|---|
| Brand | Allen-Bradley |
| Product Series | MP-Series MPL Low-Inertia Servo Motor Series |
| Product Type | Brushless AC Servo Motor |
| Motor Technology | Permanent Magnet Rotary Servo Motor |
| Voltage Class | 230V AC |
| Feedback Type | Single-turn High-resolution Encoder |
| Brake Configuration | Integrated 24V DC Holding Brake |
| Shaft Configuration | Keyed Shaft Extension |
| Connector Type | SpeedTEC DIN Connector |
| Connector Position | Right Angle |
| Connector Rotation | 180° Rotatable |
| Frame Size | 45 Frame |
| Flange Diameter | 130 mm |
| Magnet Stack Length | 101.6 mm |
| Main Application | Industrial Precision Motion Control |
3. Model Number Explanation
| Model Code | Description |
|---|---|
| MPL | MP-Series low-inertia servo motor family |
| A | 230V AC voltage class |
| 45 | 45 frame motor size |
| 40 | 101.6 mm magnet stack length |
| F | High-speed servo motor version |
| SK | Single-turn high-resolution encoder with keyed shaft |
| 74 | Right-angle connector with 24V DC brake |
| AA | Standard configuration |
4. Detailed Product Parameters
| Parameter | Specification |
|---|---|
| Model | MPL-A4540F-SK74AA |
| Brand | Allen-Bradley |
| Product Series | MP-Series MPL |
| Product Type | Rotary AC Servo Motor |
| Motor Structure | Brushless Permanent Magnet Servo Motor |
| Rotor Type | Low-Inertia Rotor |
| Voltage Class | 230V AC |
| Rated Voltage | 230V AC |
| Rated Speed | 3000 RPM |
| Maximum Speed | 3000 RPM |
| Continuous Stall Torque | Approx. 10.2 Nm |
| Peak Stall Torque | Approx. 27.1 Nm |
| Continuous Output Power | Approx. 2.6 kW |
| Feedback Type | Single-turn High-resolution Encoder |
| Encoder Type | Absolute Single-turn Feedback Encoder |
| Encoder Resolution | High-resolution Position Feedback |
| Feedback System | Closed-loop Motion Control Feedback |
| Shaft Type | Keyed Shaft Extension |
| Brake Function | Integrated Holding Brake |
| Brake Voltage | 24V DC |
| Brake Type | Mechanical Holding Brake |
| Connector Type | SpeedTEC DIN Connector |
| Connector Position | Right Angle |
| Connector Rotation | 180° Rotatable |
| Frame Size | 45 Frame |
| Flange Diameter | 130 mm |
| Magnet Stack Length | 101.6 mm |
| Mounting Type | IEC Metric Flange Mount |
| Cooling Method | Natural Cooling |
| Rotor Inertia | Approx. 0.00052 kg·m² |
| Housing Material | Industrial Metal Housing |
| Installation Method | Flange Mount |
| Rotation Direction | Bidirectional |
| Operating Environment | Industrial Automation Environment |
| Protection Structure | Industrial Servo Motor Enclosure |
| Dimensions | Approx. 130 mm × 130 mm × 300 mm |
| Weight | Approx. 13 kg |
5. Product Introduction
The MPL-A4540F-SK74AA is a precision servo motor designed for machines requiring accurate motion control combined with mechanical holding capability.
The motor uses low-inertia technology, allowing it to react quickly to speed and position commands from the servo controller.
During frequent start-stop operations, the motor can achieve fast acceleration and deceleration while maintaining smooth movement. This characteristic helps improve machine efficiency and reduces unnecessary motion delays.
The single-turn high-resolution encoder provides precise feedback signals. The controller can continuously monitor motor position and adjust output performance to maintain stable operation.
The integrated 24V DC brake provides additional safety and stability for applications where the mechanical load must remain fixed when the motor is not energized.
The keyed shaft design improves mechanical connection reliability and supports common industrial transmission structures.
The compact 45 frame design allows installation in machines with limited space while still providing strong torque output.
6. Main Product Features
6.1 Low-Inertia High-Speed Response
The low-inertia rotor design improves the motor’s dynamic performance.
Main advantages:
- Rapid acceleration response
- Fast positioning movement
- Reduced machine cycle time
- Improved synchronization accuracy
- Smooth operation during frequent motion changes
This makes the motor suitable for high-speed automation systems.
6.2 High-Resolution Single-Turn Encoder
The encoder provides accurate position feedback.
Advantages:
- Improved positioning precision
- Better repeatability
- Stable closed-loop control
- Reduced positioning deviation
- Smooth speed regulation
This feature is suitable for precision manufacturing equipment.
6.3 Integrated 24V DC Holding Brake
The built-in brake improves machine stability.
Advantages:
- Maintains load position after stopping
- Supports vertical-axis applications
- Prevents unwanted shaft movement
- Reduces need for external brake devices
6.4 Keyed Shaft Mechanical Design
The keyed shaft provides secure power transmission.
Advantages:
- Reliable torque transfer
- Easy connection with couplings
- Reduced mechanical slipping
- Improved machine reliability
6.5 Compact High-Power Servo Design
The 45 frame structure provides high performance in a compact package.
Advantages:
- Saves installation space
- Simplifies machine structure
- Improves equipment flexibility
- Provides high torque density
7. Product Applications
7.1 Packaging Machinery
The MPL-A4540F-SK74AA is suitable for various automated packaging systems.
Typical applications:
- Filling machines
- Labeling machines
- Cartoning equipment
- Sealing systems
- Rotary indexing mechanisms
The servo motor provides accurate positioning and stable repetitive operation.
7.2 CNC Machine Tools
Applications include:
- Feed axis control
- Precision positioning
- Rotary axis drive
- Tool movement systems
The high-resolution encoder improves machining consistency.
7.3 Robotics and Assembly Equipment
Typical applications:
- Robotic arms
- Pick-and-place machines
- Automated assembly systems
- Motion positioning platforms
The low-inertia design improves response speed and movement accuracy.
7.4 Semiconductor and Electronics Equipment
Applications:
- Precision inspection equipment
- Component placement systems
- Electronic assembly machines
- Automated handling equipment
The encoder feedback supports high-accuracy positioning.
7.5 Material Handling Equipment
Applications:
- Vertical lifting mechanisms
- Transfer systems
- Conveyor positioning units
- Automated storage equipment
The holding brake improves load safety and stability.
8. Product Advantages
| Advantage | Description |
|---|---|
| High Precision Control | High-resolution encoder improves positioning accuracy |
| Fast Dynamic Response | Low inertia enables quick movement changes |
| Mechanical Holding Capability | Integrated brake maintains position stability |
| Compact Installation | 130 mm flange size saves machine space |
| Strong Torque Output | Approximately 10.2 Nm continuous torque |
| Reliable Mechanical Connection | Keyed shaft improves transmission stability |
| Flexible Wiring Installation | Right-angle connector simplifies cable routing |
| Industrial Durability | Suitable for long-term automation operation |
9. Recommended Related Models from MPL Series
| Model | Voltage | Speed | Continuous Torque | Feedback | Brake | Dimensions | Weight kg |
|---|---|---|---|---|---|---|---|
| MPL-A4540F-SK72AA | 230V AC | 3000 RPM | 10.2 Nm | Single-turn High-resolution Encoder | No Brake | 130 mm × 101.6 mm stack | Approx. 9.5 kg |
| MPL-A4540F-SJ74AA | 230V AC | 3000 RPM | 10.2 Nm | Single-turn Encoder | 24V Brake | 130 mm × 101.6 mm stack | Approx. 13 kg |
| MPL-A4540F-MK74AA | 230V AC | 3000 RPM | 10.2 Nm | Multi-turn High-resolution Encoder | 24V Brake | 130 mm × 101.6 mm stack | Approx. 13 kg |
| MPL-A4560F-SK74AA | 230V AC | 3000 RPM | 14.1 Nm | Single-turn Encoder | 24V Brake | 130 mm × 152.4 mm stack | Approx. 15 kg |
| MPL-A4530F-SK74AA | 230V AC | 3000 RPM | 8.36 Nm | Single-turn Encoder | 24V Brake | 130 mm × 76.2 mm stack | Approx. 11 kg |
10. Recommended Popular Models from the Same Brand
| Model | Product Series | Voltage | Speed | Torque | Feedback | Brake | Dimensions | Weight kg |
|---|---|---|---|---|---|---|---|---|
| MPL-A4540F-MJ74AA | MP-Series MPL | 230V AC | 3000 RPM | 10.2 Nm | Multi-turn Encoder | 24V Brake | 130 mm × 101.6 mm | Approx. 13 kg |
| MPL-A4540F-MK72AA | MP-Series MPL | 230V AC | 3000 RPM | 10.2 Nm | Multi-turn High-resolution Encoder | No Brake | 130 mm × 101.6 mm | Approx. 9.5 kg |
| MPL-A4540F-SJ72AA | MP-Series MPL | 230V AC | 3000 RPM | 10.2 Nm | Single-turn Encoder | No Brake | 130 mm × 101.6 mm | Approx. 9.5 kg |
| MPL-A4560F-MJ74AA | MP-Series MPL | 230V AC | 3000 RPM | 14.1 Nm | Absolute Encoder | 24V Brake | 130 mm × 152.4 mm | Approx. 15 kg |
| MPL-B4540F-SK74AA | MP-Series MPL | 460V AC | 3000 RPM | 10.2 Nm | Single-turn High-resolution Encoder | 24V Brake | 130 mm × 101.6 mm | Approx. 13 kg |
11. Model Selection Guide
| Application Requirement | Recommended Model |
|---|---|
| Precision positioning without brake | MPL-A4540F-SK72AA |
| Precision positioning with brake | MPL-A4540F-SK74AA |
| Multi-turn feedback requirement | MPL-A4540F-MK74AA |
| Higher torque application | MPL-A4560F Series |
| Compact automation equipment | MPL-A4530F Series |
12. Product Summary
The MPL-A4540F-SK74AA is a high-performance low-inertia servo motor designed for precision industrial automation applications.
With a 230V AC voltage class, 3000 RPM rated speed, approximately 10.2 Nm continuous torque, single-turn high-resolution encoder feedback, keyed shaft structure, and integrated 24V DC holding brake, the motor provides accurate, stable, and reliable motion control.
Its combination of fast response, precise feedback, compact structure, and load-holding capability makes it suitable for packaging machines, CNC systems, robotics, semiconductor equipment, and advanced automation platforms.
The MPL-A4540F-SK74AA is an ideal solution for industrial motion systems requiring high accuracy, smooth operation, and dependable long-term performance.