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- Low-Inertia Brushless Servo Motors Product
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MPL-A4540F-HK74AA Servo Motor Product Introduction, Technical Parameters, Applications and Model Recommendation Guide
1. Product Overview
Product Model: MPL-A4540F-HK74AA
Brand: Allen-Bradley
Product Series: MP-Series MPL Low-Inertia Brushless Servo Motor Series
Product Type: AC Rotary Servo Motor
Application Field: Industrial Automation Motion Control
The MPL-A4540F-HK74AA is a low-inertia brushless AC servo motor designed for high-performance industrial motion applications. It belongs to the MP-Series MPL servo motor family and is mainly used in automation systems requiring high positioning accuracy, fast dynamic response, stable torque output, and reliable continuous operation.
This model is designed for 230V AC servo systems and features a compact 45 frame structure with a 101.6 mm magnet stack length. It provides excellent acceleration and deceleration characteristics through its low-inertia rotor design, allowing machines to achieve shorter cycle times and improved production efficiency.
The MPL-A4540F-HK74AA combines a compact mechanical design with high torque density. It provides approximately 10.2 Nm continuous stall torque and approximately 27 Nm peak torque, making it suitable for medium-load motion applications where both speed and accuracy are important.
This model includes an incremental encoder feedback system, a 24V DC holding brake, a right-angle connector configuration, and a keyless shaft design. The integrated brake makes this model suitable for applications where the load needs to remain in position when the motor is stopped or power is removed.
2. Product Brand and Series Information
| Item | Description |
|---|---|
| Brand | Allen-Bradley |
| Product Series | MP-Series MPL Low-Inertia Servo Motor Series |
| Product Category | Industrial Servo Motor |
| Motor Type | Brushless Permanent Magnet AC Servo Motor |
| Voltage Class | 230V AC |
| Control Type | Closed-loop Servo Motion Control |
| Main Function | Precision Positioning and Speed Control |
| Application Area | Industrial Automation Equipment |
3. Model Number Explanation
| Model Code | Description |
|---|---|
| MPL | MP-Series low-inertia servo motor family |
| A | 230V AC voltage class |
| 45 | Frame size 45 |
| 40 | Magnet stack length 101.6 mm |
| F | High-speed motor design, 3000 RPM class |
| HK | Incremental encoder feedback configuration |
| 74 | Right-angle connector with 24V DC holding brake |
| AA | Standard configuration |
4. Detailed Product Parameters
| Parameter | Specification |
|---|---|
| Model | MPL-A4540F-HK74AA |
| Brand | Allen-Bradley |
| Product Series | MP-Series MPL |
| Motor Type | Brushless AC Servo Motor |
| Motor Design | Low-Inertia Permanent Magnet Servo Motor |
| Voltage Class | 230V AC |
| Rated Voltage | 230V AC |
| Rated Speed | 3000 RPM |
| Continuous Stall Torque | 10.2 Nm |
| Peak Stall Torque | Approx. 27.1 Nm |
| Rated Output Power | Approx. 2.6 kW |
| Feedback Type | Incremental Encoder |
| Encoder Resolution | 2000 Lines/Revolution |
| Shaft Type | Keyless Shaft Extension |
| Brake Function | 24V DC Holding Brake |
| 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 Type | Low-Inertia Rotor |
| Protection Structure | Industrial Servo Housing |
| Installation Direction | Flexible Mounting |
| Rotation Direction | Bidirectional |
| Operating Environment | Industrial Automation Environment |
| Dimensions | Approx. 130 mm × 130 mm × 300 mm |
| Weight | Approx. 13 kg |
5. Product Introduction
The MPL-A4540F-HK74AA is developed for industrial equipment that requires accurate motion control combined with reliable mechanical holding performance.
The low-inertia design allows the motor to react quickly to control commands. During frequent start-stop operations, the motor can reach target speed quickly and return to accurate positioning points with minimal delay.
The integrated encoder provides continuous feedback information to the servo control system. This enables precise monitoring of motor position, speed, and movement status during operation.
The 24V DC brake expands the application range of this motor. Compared with non-brake configurations, this model can better support vertical-axis systems and applications where the mechanical load must remain stable after stopping.
The compact frame structure allows machine designers to install the motor in limited spaces while maintaining high performance. The combination of high torque output, low inertia, and accurate feedback makes it suitable for demanding automation environments.
6. Main Product Features
6.1 Low-Inertia Rotor Technology
The low-inertia rotor design provides excellent dynamic performance.
Main advantages:
- Fast acceleration response
- Quick deceleration capability
- Reduced machine cycle time
- Improved motion synchronization
- Better performance in repetitive movements
This feature is especially valuable in high-speed production equipment.
6.2 Accurate Encoder Feedback
The incremental encoder provides reliable feedback signals for closed-loop control.
Benefits include:
- High positioning accuracy
- Stable speed regulation
- Improved repeatability
- Reduced positioning errors
- Smooth operation under changing loads
The feedback system allows the servo system to continuously adjust motor performance.
6.3 Integrated Holding Brake
The built-in 24V DC brake provides mechanical load holding capability.
Advantages:
- Prevents unwanted shaft movement when stopped
- Supports vertical-axis applications
- Improves machine stability
- Reduces the need for additional braking components
6.4 Compact High-Power Structure
The 45 frame design provides strong performance in a compact package.
Benefits:
- Saves machine installation space
- Provides high torque density
- Simplifies mechanical design
- Improves equipment integration flexibility
7. Product Applications
7.1 Packaging Machinery
The MPL-A4540F-HK74AA is widely used in automated packaging equipment.
Typical applications:
- Filling machines
- Labeling systems
- Cartoning equipment
- Sealing machines
- Indexing mechanisms
The motor provides fast response and stable positioning during repeated production cycles.
7.2 CNC Machine Tools
Applications include:
- Feed axis control
- Precision positioning
- Rotary axis operation
- Tool movement systems
The encoder feedback helps maintain machining accuracy and consistent movement.
7.3 Robotics and Assembly Equipment
Common applications:
- Pick-and-place systems
- Automated assembly machines
- Robotic positioning platforms
- Production line automation
The low-inertia design improves robotic movement speed and smoothness.
7.4 Semiconductor and Electronics Equipment
Used in:
- Precision inspection systems
- Component placement machines
- Electronic assembly equipment
- High-accuracy positioning platforms
The motor provides stable operation for precision manufacturing processes.
7.5 Material Handling Systems
Applications include:
- Vertical lifting systems
- Transfer equipment
- Conveyor mechanisms
- Automated storage equipment
The brake function improves load holding performance.
8. Product Advantages
| Advantage | Description |
|---|---|
| High Dynamic Response | Low inertia provides rapid acceleration and deceleration |
| Accurate Position Control | Encoder feedback improves motion precision |
| Built-in Brake Function | Provides mechanical holding capability |
| Compact Dimensions | 130 mm frame reduces installation space |
| High Torque Density | Strong output performance in a compact design |
| Reliable Industrial Operation | Designed for continuous automation use |
| Flexible Installation | Right-angle connector improves cable arrangement |
| Easy Integration | Compatible with industrial motion systems |
9. Recommended Related Models from MPL Series
| Model | Voltage | Speed | Continuous Torque | Feedback | Brake | Dimensions | Weight kg |
|---|---|---|---|---|---|---|---|
| MPL-A4540F-HK72AA | 230V AC | 3000 RPM | 10.2 Nm | Incremental Encoder | No Brake | 130 mm × 101.6 mm stack | 9.5 kg |
| MPL-A4540F-HJ74AA | 230V AC | 3000 RPM | 10.2 Nm | Incremental Encoder | 24V DC Brake | 130 mm × 101.6 mm stack | 13 kg |
| MPL-A4540F-MJ74AA | 230V AC | 3000 RPM | 10.2 Nm | High Resolution Encoder | 24V DC Brake | 130 mm × 101.6 mm stack | 13 kg |
| MPL-A4560F-HK74AA | 230V AC | 3000 RPM | 14.1 Nm | Incremental Encoder | 24V DC Brake | 130 mm × 152.4 mm stack | Approx. 15 kg |
| MPL-A4540C-HK74AA | 230V AC | 1500 RPM | 10.2 Nm | Incremental Encoder | 24V DC Brake | 130 mm × 101.6 mm stack | Approx. 13 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 | 13 kg |
| MPL-A4560F-MJ74AA | MP-Series MPL | 230V AC | 3000 RPM | 14.1 Nm | Multi-turn Encoder | 24V Brake | 130 mm × 152.4 mm | Approx. 15 kg |
| MPL-A520K-MJ74AA | MP-Series MPL | 230V AC | 4000 RPM | 10.7 Nm | High Resolution Encoder | 24V Brake | 165 mm × 50.8 mm | Approx. 12 kg |
| MPL-A540F-MJ74AA | MP-Series MPL | 230V AC | 3000 RPM | Higher Torque Class | Multi-turn Encoder | 24V Brake | 165 mm × 101.6 mm | Approx. 20 kg |
| MPL-B4540F-HK74AA | MP-Series MPL | 460V AC | 3000 RPM | 10.2 Nm | Incremental Encoder | 24V Brake | 130 mm × 101.6 mm | Approx. 13 kg |
11. Model Selection Guide
| Application Requirement | Recommended Model |
|---|---|
| Same motor without brake | MPL-A4540F-HK72AA |
| Same motor with holding brake | MPL-A4540F-HK74AA |
| Higher feedback accuracy | MPL-A4540F-MJ74AA |
| Higher torque requirement | MPL-A4560F Series |
| Higher speed application | MPL-A520K Series |
12. Product Summary
The MPL-A4540F-HK74AA is a high-performance low-inertia AC servo motor designed for modern industrial automation systems.
With a 230V AC voltage class, 3000 RPM rated speed, approximately 10.2 Nm continuous torque, incremental encoder feedback, and integrated 24V DC holding brake, this motor provides a reliable solution for applications requiring both precision movement and mechanical stability.
The combination of compact dimensions, fast response characteristics, accurate feedback control, and brake functionality makes it suitable for packaging machines, CNC equipment, robotics, semiconductor manufacturing systems, and various automated production platforms.
The MPL-A4540F-HK74AA is especially suitable for motion systems that require frequent positioning changes, stable operation, and reliable load holding performance.