Allen Bradley MPL-A420P-SJ72AA Servo Motor

Applications

The MPL-A420P-SJ72AA is well suited to automated equipment where rapid response, repeatable positioning, and closed-loop motion control are essential.

Typical applications include:

• Automated assembly machinery
• Packaging and labeling systems
• Material handling equipment
• Printing and converting machines
• Pick-and-place mechanisms
• Precision indexing systems
• Machine tools and auxiliary machine axes
• Electronic manufacturing equipment
• Automated inspection systems
• High-speed production machinery

Its low-inertia construction is particularly beneficial in applications involving frequent acceleration and deceleration. The motor can respond efficiently to changing motion commands while maintaining accurate feedback to the servo controller.

Advantages

Low-inertia brushless design
The MPL-Series architecture is optimized for responsive servo operation, making the motor suitable for applications with frequent starts, stops, indexing, and direction changes.

5000 RPM operating capability
A rated speed of up to 5000 RPM provides a broad operating range for high-cycle automation and rotary motion applications.

Single-turn high-resolution feedback
The integrated single-turn high-resolution encoder provides detailed rotor-position information for closed-loop servo control. This supports accurate positioning and repeatable machine operation.

115 mm compact frame
The frame 4 configuration provides a useful balance between motor size and performance, allowing the servo to be incorporated into relatively compact machine assemblies.

Keyed shaft extension
The keyed shaft provides a conventional mechanical interface for compatible couplings, pulleys, gears, and other driven components.

Flexible connector arrangement
The right-angle SpeedTEC DIN connector can be rotated through 180°, helping engineers manage cable routing in installations where cabinet and machine-space constraints are important.

Metric mounting configuration
The IEC metric mounting arrangement with free mounting holes makes the motor convenient for integration into international machine designs.

Technical FAQs

1. What type of motor is the MPL-A420P-SJ72AA?
It is a low-inertia brushless AC rotary servo motor in the Allen-Bradley MP-Series MPL family.

2. What voltage class does the MPL-A420P-SJ72AA use?
The motor is designed for the 230 V AC class and is intended for use with compatible Allen-Bradley servo drive systems.

3. What is the rated speed of the MPL-A420P-SJ72AA?
The motor is rated for operation up to 5000 RPM.

4. What feedback device is installed on this model?
The MPL-A420P-SJ72AA uses a single-turn high-resolution encoder for servo position feedback.

5. Does this motor include an integrated brake?
No. The MPL-A420P-SJ72AA is specified as a no-brake configuration.

6. Does the motor have a keyed shaft?
Yes. This model uses a keyed shaft extension for mechanical coupling to the driven load.

7. What is the magnet stack length?
The MPL-A420P-SJ72AA uses a 50.8 mm magnet stack, identified as stack length 20 within the MPL product family.

8. What connector is used by the motor?
It uses a right-angle SpeedTEC DIN connector. The connector can be rotated 180° to provide greater flexibility during machine installation.

9. What should be considered when selecting a servo drive for this motor?
The drive should be compatible with the motor's 230 V class, encoder feedback system, motor electrical characteristics, and required motion profile. Proper motor-drive matching is essential for reliable servo operation.

10. Is the MPL-A420P-SJ72AA suitable for high-cycle positioning applications?
Yes. Its low-inertia construction and 5000 RPM capability make it appropriate for applications requiring rapid acceleration, deceleration, indexing, and repeated positioning.