ProductPRODUCT
Featured products
Contact Us
- Allen Bradley
- MPL-A420P-HK74AA
- Servo Motor
- USA
- 115 mm
- 4.3 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 4
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| [email protected] | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |
Product Overview
The Allen Bradley MPL-A420P-HK74AA Servo Motor is an industrial AC servo motor designed for integration into automated motion-control systems. As part of the Allen Bradley MPL servo motor family, this motor is intended for applications requiring controlled rotary motion, repeatable positioning, coordinated movement, and reliable machine-axis operation.
In a typical industrial automation system, the servo motor operates together with a compatible servo drive and motion controller. The controller generates the required motion commands, the drive regulates electrical power supplied to the motor, and the feedback system provides operating information that allows the motion system to maintain the desired response.
The supplied specifications identify the MPL-A420P-HK74AA with a 115 mm frame size and a weight of 4.3 kg. These physical parameters are useful for machine design, mounting arrangements, equipment transportation, maintenance planning, and replacement-part management.
The motor can be incorporated into automated machinery when its complete electrical, mechanical, and feedback specifications match the application. Potential applications include packaging machinery, assembly equipment, material handling systems, machine automation, production equipment, and other controlled-motion systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen Bradley |
| Model | MPL-A420P-HK74AA |
| Product Type | AC Servo Motor |
| Product Family | MPL Series |
| Motor Technology | Permanent Magnet Servo Motor |
| Frame Size | 115 mm |
| Weight | 4.3 kg |
| Application | Industrial Motion Control |
| Control Method | Closed-Loop Servo Control |
| Installation | Machine-Mounted |
| Drive Interface | Compatible Servo Drive |
| Feedback | Verify according to motor nameplate and system configuration |
| Electrical Ratings | Verify according to applicable motor documentation |
| Typical Applications | Packaging, Assembly, Material Handling, Production Automation, Motion Systems |
Specification note: Exact motor torque, speed, voltage, current, feedback configuration, shaft dimensions, connector arrangement, and other model-specific characteristics should be confirmed from the motor nameplate and applicable technical documentation before installation or replacement.
What Is the Allen Bradley MPL-A420P-HK74AA?
The Allen Bradley MPL-A420P-HK74AA is an industrial servo motor designed to provide controlled mechanical rotation in automated machinery.
A servo motor normally forms part of a complete motion-control system. Rather than operating independently, it receives controlled electrical power from a servo drive. The drive receives commands from a PLC or motion controller and regulates motor operation according to the required motion profile.
A simplified system can be represented as:
Motion Controller → Servo Drive → MPL-A420P-HK74AA → Mechanical Load
Feedback information is returned through the servo system to support closed-loop control.
This arrangement allows the motor to contribute to applications requiring controlled position, speed, acceleration, deceleration, and repetitive machine movement.
The 115 mm frame size is an important mechanical reference for machine integration, while the supplied 4.3 kg weight should be considered when designing mounting structures and planning motor replacement or handling.
Servo Motor Working Principle
The MPL-A420P-HK74AA works as part of a feedback-based servo system.
The general operating process includes:
- A PLC or motion controller generates a movement command.
- The servo drive receives the command.
- The drive regulates electrical power supplied to the motor.
- The motor generates mechanical torque and rotation.
- The mechanical transmission transfers motion to the machine load.
- Feedback information is monitored by the servo system.
- The drive adjusts operation as required to follow the commanded motion.
This closed-loop process allows automated machinery to perform repeatable movements.
For example, an automated machine may require a mechanical axis to accelerate, move to a specified position, decelerate, and remain at the required position. The servo system coordinates these operations according to the configured motion parameters.
Actual machine performance depends on the complete system, including the motor, servo drive, motion controller, feedback system, mechanical transmission, load inertia, and tuning parameters.
Main Functions
Controlled Rotary Motion
The MPL-A420P-HK74AA converts controlled electrical energy into mechanical rotary movement.
Positioning
When integrated into an appropriate servo system, the motor can participate in automated positioning operations.
Speed Control
The servo drive can regulate motor speed according to the machine’s required motion profile.
Acceleration and Deceleration
Controlled acceleration and deceleration help the machine perform smooth and repeatable movements.
Repetitive Motion
The motor can be used in applications where machine movements must be repeated consistently.
Coordinated Axis Operation
Multiple servo motors can be coordinated through an appropriate motion controller for synchronized machine operations.
Role in Industrial Automation
The MPL-A420P-HK74AA can serve as the motor element of an automated machine axis.
A typical control architecture can be structured as follows:
PLC / Motion Controller
↓
Motion Command
↓
Servo Drive
↓
MPL-A420P-HK74AA Servo Motor
↓
Mechanical Transmission
↓
Machine Load
The feedback system provides information that supports closed-loop motor control.
This type of architecture is commonly used where machine movement must be controlled according to a programmed sequence rather than operated only at a fixed speed.
The motor can therefore contribute to machine functions such as indexing, positioning, synchronized movement, automated feeding, and repetitive production cycles.
Industrial Applications
Packaging Machinery
Packaging machines often require accurate and repeatable movement for feeding, indexing, cutting, sealing, labeling, and positioning.
Servo motors can provide the controlled movement needed for these operations.
Automated Assembly Equipment
Assembly machines may require controlled movement of tools, fixtures, workpieces, or components.
Servo-controlled axes can coordinate these movements with the overall production sequence.
Material Handling Systems
Automated material handling equipment can use servo motors for positioning mechanisms, transfer systems, indexing equipment, and controlled conveyor movement.
Machine Tools
Servo motors can be used for controlled machine axes where positioning and coordinated movement are required.
Printing and Converting Equipment
Printing and converting machinery can require synchronization between multiple rotating and linear mechanisms.
Servo systems can provide coordinated motion between these machine elements.
Production Machinery
Automated production systems can use servo motors to execute repeatable motion sequences under PLC or motion-controller supervision.
Automated Mechanical Systems
Robotic and automated mechanisms can use servo motors when controlled movement and repeatability are required.
Mechanical Integration
The 115 mm frame size should be considered when designing the motor mounting structure.
Before installing the MPL-A420P-HK74AA, engineers should verify:
- Mounting dimensions
- Mounting-hole arrangement
- Shaft dimensions
- Shaft extension
- Coupling requirements
- Mechanical alignment
- Available installation clearance
- Cable routing
- Load characteristics
- Environmental conditions
The supplied motor weight is 4.3 kg.
The mounting structure should be capable of supporting the motor securely while accommodating the dynamic forces produced during operation.
Proper shaft alignment is particularly important. Misalignment can lead to increased vibration, coupling stress, bearing loading, and premature mechanical wear.
Servo Drive Integration
The MPL-A420P-HK74AA should be connected to a servo drive that is confirmed to be compatible with the motor.
Compatibility should be established using the complete motor model and system requirements rather than only the motor family or frame size.
Important considerations include:
- Complete motor model
- Motor electrical characteristics
- Feedback configuration
- Servo drive capacity
- Motion-control architecture
- Mechanical load
- Required motion profile
- Safety requirements
- Motor and feedback cable configuration
Correct motor parameters should be entered or verified in the servo drive before commissioning.
Installation Guidelines
1. Verify Motor Identification
Confirm that the motor is the required MPL-A420P-HK74AA.
Record the model and nameplate information for future maintenance and commissioning.
2. Inspect the Motor
Check the motor housing, shaft, mounting surfaces, connectors, and cables for physical damage.
3. Prepare the Mounting Structure
Ensure that the machine mounting surface is rigid and suitable for the 115 mm frame size.
4. Install the Motor
Secure the motor with appropriate mounting hardware.
Avoid impacts or excessive mechanical force on the shaft.
5. Align the Shaft
Correctly align the motor shaft with the driven equipment.
Check the coupling and mechanical transmission before applying power.
6. Connect Motor and Feedback Wiring
Connect the motor power and feedback circuits according to the applicable servo-system wiring requirements.
7. Verify Grounding
Ensure that the motor and machine grounding arrangement follows the applicable electrical design and safety requirements.
Commissioning Procedure
A structured commissioning process helps reduce the risk of unexpected machine movement.
Step 1: Check Wiring
Verify motor power, feedback, grounding, and control connections.
Step 2: Verify Servo Drive Configuration
Confirm that the servo drive is configured for the correct motor.
Step 3: Verify Feedback
Check that the servo drive correctly recognizes the motor feedback system.
Step 4: Inspect Mechanical Movement
Make sure the axis is free of mechanical obstructions.
Step 5: Perform Initial Motion Testing
Start with controlled motion and observe motor and machine behavior.
Step 6: Verify Rotation Direction
Confirm that commanded movement corresponds to the intended machine direction.
Step 7: Tune the Servo Axis
Adjust servo-control parameters according to the actual machine mechanics.
Step 8: Verify Positioning
Check the axis for repeatability and stable operation.
Step 9: Test the Full Machine Cycle
After individual-axis commissioning, verify the complete machine operating sequence.
Troubleshooting
Motor Does Not Rotate
Possible causes include:
- Servo drive not enabled
- Incorrect motor configuration
- Missing motor power
- Feedback connection problem
- Drive alarm
- Incorrect control command
- Mechanical obstruction
The servo drive diagnostic information should be checked before replacing the motor.
Incorrect Positioning
Possible causes include:
- Incorrect feedback configuration
- Incorrect scaling
- Mechanical backlash
- Coupling problems
- Incorrect motion parameters
- Servo tuning problems
The motor, drive, feedback system, and mechanical transmission should all be checked.
Excessive Vibration
Possible causes include:
- Mechanical misalignment
- Coupling problems
- Machine resonance
- Incorrect servo tuning
- Excessive load
- Mechanical wear
Both mechanical and electronic factors should be investigated.
Excessive Motor Temperature
Possible causes may include:
- Excessive load
- High duty cycle
- Poor cooling
- Mechanical resistance
- Incorrect operating conditions
- Incorrect drive configuration
The motor should be operated within its specified electrical and thermal limits.
Intermittent Operation
Possible causes include:
- Loose connectors
- Damaged cables
- Feedback interruptions
- Electrical interference
- Mechanical vibration
- Drive configuration issues
The complete motor, cable, feedback, and drive system should be inspected.
Maintenance Recommendations
Regular maintenance can help maintain stable servo-system performance.
Inspect Mounting Hardware
Check that the motor remains securely mounted.
Inspect Couplings
Check for coupling wear, looseness, or mechanical misalignment.
Check Motor Cables
Inspect power and feedback cables for abrasion, bending damage, loose connections, or connector problems.
Monitor Temperature
Unexpected temperature increases should be investigated.
Monitor Vibration
Changes in vibration may indicate alignment problems, mechanical wear, load changes, or servo tuning issues.
Inspect Connectors
Keep motor and feedback connectors clean, secure, and protected.
Monitor Motion Performance
Changes in positioning accuracy, response characteristics, noise, or alarm frequency should be investigated.
Replacement Considerations
When replacing the Allen Bradley MPL-A420P-HK74AA, the complete motor model should be verified.
Important information includes:
- Manufacturer
- Complete model number
- Frame size
- Motor nameplate
- Feedback configuration
- Mounting arrangement
- Shaft configuration
- Connector arrangement
- Servo drive compatibility
- Machine application
The supplied physical specifications are:
Frame Size: 115 mm
Weight: 4.3 kg
A replacement motor should not be selected solely according to frame size or external appearance.
The complete electrical, mechanical, feedback, and control requirements should be checked before installation.
Physical Size and Weight
The 115 mm frame size provides a useful reference for machine designers and maintenance personnel.
The 4.3 kg weight is relevant to:
- Motor mounting
- Structural calculations
- Transportation
- Maintenance handling
- Spare-parts management
- Packaging
- Replacement planning
Frame size does not define every external dimension of the motor. Exact motor length, shaft dimensions, mounting-hole positions, connector locations, and other mechanical details should be confirmed from the appropriate technical drawing.
Servo System Architecture
A typical automation system incorporating the MPL-A420P-HK74AA may contain several components.
| Component | Typical Function |
|---|---|
| PLC / Motion Controller | Generates motion commands |
| Servo Drive | Controls motor operation |
| MPL-A420P-HK74AA | Produces controlled rotary motion |
| Feedback System | Provides motion feedback |
| Motor Cable | Transfers power and signals |
| Coupling | Transfers motor torque to the machine |
| Mechanical Load | Performs the required machine movement |
| HMI | Provides operator monitoring |
| Industrial Network | Exchanges control and diagnostic information |
The exact architecture depends on the machine design and selected automation hardware.
Engineering Best Practices
Match the Motor to the Load
The motor should be selected according to the required torque, speed, acceleration, duty cycle, and load characteristics.
Evaluate Load Inertia
The mechanical inertia of the connected load influences servo response and tuning.
Maintain Shaft Alignment
Proper alignment helps reduce vibration, coupling stress, and bearing loading.
Protect Motor and Feedback Cables
Cables should be routed and protected appropriately to reduce mechanical and electrical interference risks.
Tune the Servo System
Servo parameters should be adjusted according to the actual machine mechanics and required response.
Monitor Operating Conditions
Changes in temperature, vibration, positioning accuracy, or fault frequency can provide useful indications of developing problems.
Verify Replacement Parts
Always confirm the complete model number and system compatibility before installing replacement components.
Key Advantages
- 115 mm frame size for industrial machine integration
- 4.3 kg weight for practical installation and maintenance handling
- Designed for closed-loop industrial motion control
- Suitable for controlled rotary movement
- Suitable for automated positioning
- Supports repetitive machine motion
- Can participate in coordinated multi-axis applications
- Applicable to packaging and assembly machinery
- Suitable for material handling and production automation
- Can be integrated into Allen Bradley motion-control architectures when compatibility is confirmed
Technical FAQs
What is the Allen Bradley MPL-A420P-HK74AA?
The Allen Bradley MPL-A420P-HK74AA is an industrial AC servo motor designed for automated motion-control applications.
What is the frame size of the MPL-A420P-HK74AA?
The supplied frame size is 115 mm.
How much does the MPL-A420P-HK74AA weigh?
The supplied weight is 4.3 kg.
What is the primary function of this motor?
The motor converts controlled electrical power from a compatible servo drive into mechanical rotary motion for an automated machine axis.
What applications can use this servo motor?
Potential applications include packaging, assembly, material handling, production automation, machine tools, and other industrial motion-control systems when the motor’s complete specifications match the application.
Can any Allen Bradley servo drive operate this motor?
No. The compatible servo drive must be verified using the complete motor model, electrical requirements, feedback configuration, and system architecture.
What should be checked before installation?
The complete model number, motor nameplate, frame size, mounting arrangement, shaft configuration, feedback system, electrical characteristics, drive compatibility, wiring, and machine load should be verified.
Does the 115 mm frame size specify the complete motor dimensions?
No. Frame size is a mechanical reference and does not provide every external measurement. Detailed mechanical drawings should be consulted for mounting and machine design.
What can cause servo motor vibration?
Possible causes include mechanical misalignment, coupling problems, machine resonance, excessive load, incorrect servo tuning, or mechanical wear.
How should the MPL-A420P-HK74AA be maintained?
Maintenance should include inspection of mounting hardware, mechanical couplings, cables, connectors, temperature, vibration, and overall servo-system performance.
Conclusion
The Allen Bradley MPL-A420P-HK74AA Servo Motor is an industrial AC servo motor intended for controlled motion applications in automated machinery. With a supplied 115 mm frame size and 4.3 kg weight, it provides useful mechanical information for machine integration, mounting, maintenance, transportation, and replacement planning.
When combined with a compatible servo drive and motion controller, the MPL-A420P-HK74AA can form part of a closed-loop motion-control system for controlled rotary movement, positioning, acceleration and deceleration, repetitive machine cycles, and coordinated automation operations.
For reliable installation, the complete servo system should be evaluated rather than relying only on frame size or physical appearance. Electrical characteristics, feedback configuration, mechanical mounting, shaft alignment, drive compatibility, and machine load requirements should be verified before commissioning. Proper installation, servo tuning, cable management, and preventive maintenance can help support stable and reliable operation in industrial automation environments.