Product Overview

The Schneider Electric LXM28SU04M3X is a 400 W motion servo drive from the Lexium 28 series. It is designed to control compatible AC servo motors in industrial automation and machinery applications that require accurate speed, torque, and motion management.

Servo drives are essential components in modern motion-control systems. They receive commands from a motion controller, PLC, or other automation device and regulate the electrical power delivered to a servo motor. By coordinating motor current, speed, and position-related feedback, a servo drive helps machinery perform controlled movements with repeatable results.

The LXM28SU04M3X supports single-phase and three-phase AC supply configurations within its specified voltage range. It has a nominal 220 V supply rating, a continuous output current of 2.6 A at a 16 kHz switching frequency, and a 3-second peak output current of 7.8 A. Its continuous power rating is 400 W.

This model belongs to the Lexium 28S Sercos configuration. It is designed for integration into motion-control architectures using the Sercos communication interface. The Lexium 28 platform also provides standard machine interfaces and embedded safety-related functionality, supporting integration into appropriately designed automation systems.

The LXM28SU04M3X is supplied without an integrated EMC filter. This configuration detail should be considered during electrical design, particularly when selecting cabinet components, motor cables, grounding arrangements, and external EMC measures.

With its compact housing and 400 W output rating, the LXM28SU04M3X is suitable for compatible servo applications in packaging machinery, assembly equipment, handling systems, and other automated machines. Correct motor matching, parameter configuration, and commissioning are essential for achieving stable operation.

Technical Specifications

Note: The dimensions and weight above are the supplied listing values. Confirm the actual unit and packaging configuration before using these figures for shipping or installation planning.

Function and Working Principle

The LXM28SU04M3X operates as the power-control component between the electrical supply and a compatible servo motor. It processes motion commands and adjusts motor power to achieve the required movement.

1. Servo Motor Power Regulation

A servo motor requires controlled electrical power to produce the requested torque and speed. The servo drive regulates the current supplied to the motor according to its control parameters and operating commands.

The LXM28SU04M3X provides a continuous output current of 2.6 A and a peak output current of 7.8 A for up to three seconds. The peak rating supports temporary higher-current demands during acceleration or changing mechanical loads, provided the operating conditions remain within the manufacturer’s specifications.

2. Speed Control

Speed control allows a servo motor to follow a commanded rotational speed. The drive adjusts motor output to respond to changes in the speed reference and mechanical load.

This function is important in applications such as conveyor synchronization, material feeding, and automated assembly. Stable speed regulation helps equipment maintain consistent movement during production.

3. Torque Control

Torque control regulates the motor’s output torque according to the application requirements. It can be useful in winding, tension-control, pressing, and material-handling applications.

The appropriate control mode and limits must be configured according to the motor, mechanical system, and machine-control requirements.

4. Position-Related Motion Control

In a servo system, position commands and feedback allow a machine to perform controlled movements between defined positions. The controller generates motion references, while the servo drive regulates motor operation.

The complete position-control function depends on the drive configuration, motor encoder, controller, and application programming. The drive should be paired with compatible Lexium motor and feedback hardware.

5. Sercos Communication

The LXM28SU04M3X is a Sercos-configured Lexium 28 servo drive. Sercos provides an industrial communication interface for exchanging motion commands and operating information between compatible controllers and servo drives.

A suitable Sercos master and correctly configured network are required. Network topology, cable selection, addressing, and communication parameters should follow the applicable Schneider Electric documentation.

Role in Industrial Automation Systems

The LXM28SU04M3X is typically installed as part of a coordinated motion-control system. It works with a servo motor, motion controller, power supply, feedback devices, and machine-level control equipment.

PLC and Motion Controller Integration

A PLC or motion controller generates commands based on machine logic, production sequences, and sensor information. Through the supported Sercos interface, a compatible controller can coordinate the servo drive with other motion axes and automation devices.

This is useful in machinery that requires synchronized movement, repeatable positioning, or coordinated acceleration and deceleration.

Servo Motor Coordination

The servo drive must be matched with a compatible motor. Motor rated voltage, current, power, encoder type, and mechanical characteristics should be checked before installation.

Schneider Electric Lexium BCH2 motors are part of the Lexium 28 ecosystem. The exact motor selection must follow the drive’s compatibility documentation and the requirements of the application.

Machine Safety Integration

The Lexium 28 platform includes embedded safety-related functionality. Safety functions must be implemented and validated according to the machine’s risk assessment, applicable standards, and the specific drive documentation.

A servo drive’s embedded safety feature does not replace the complete machine safety system. External safety devices, wiring, configuration, and validation may still be required.

Operator Interface and Diagnostics

An HMI or operator panel can display machine status, alarms, and production information through the control system. Maintenance personnel can use suitable configuration tools and diagnostic interfaces to review drive status and troubleshoot faults.

The control architecture should clearly define which device manages motion commands, operator requests, and fault recovery.

Industrial Applications

The 400 W output rating of the LXM28SU04M3X makes it suitable for compact servo systems where controlled movement and repeatable operation are important.

1. Packaging Machinery

Packaging machines use servo motors for feeding, sealing, cutting, indexing, and product positioning. A servo drive can coordinate motor movement with the machine cycle and help maintain consistent product handling.

The LXM28SU04M3X may be used in appropriately sized axes where the motor and load requirements fall within its electrical and mechanical limits.

2. Automated Assembly Equipment

Assembly machinery often requires controlled movement for inserting, positioning, pressing, or transferring components.

Servo control supports repeatable motion and coordination between machine stations. The drive can operate as part of a Sercos-based motion architecture when paired with compatible control equipment.

3. Material Handling Systems

Automated handling equipment may use servo motors for feeding mechanisms, transfer units, and positioning axes.

Controlled acceleration and deceleration can help reduce mechanical impact and improve movement consistency. The drive must be selected according to the load inertia, required speed, and torque profile.

4. Labeling and Printing Machinery

Labeling and printing equipment requires coordinated movement between rollers, feeding systems, and product-positioning mechanisms.

Servo control can help synchronize these movements and maintain repeatable operation. The application must be engineered around the required speed, accuracy, and motor feedback characteristics.

5. Small Automated Production Machines

Compact production equipment may use 400 W servo motors for indexing, positioning, and auxiliary motion. The LXM28SU04M3X can serve as the drive component in a compatible Lexium 28 servo system.

Examples include small assembly stations, automated feeders, inspection mechanisms, and dedicated manufacturing machines.

Installation and System Integration

Correct installation is essential for reliable servo operation and electrical safety.

1. Verify the AC Supply

The LXM28SU04M3X is designed for a nominal 220 V AC supply and supports single-phase or three-phase configurations within the specified voltage limits.

Before installation, verify the available supply, phase arrangement, frequency, protective devices, and wiring requirements. Do not assume that every 220 V supply configuration is interchangeable without checking the manufacturer’s instructions.

2. Confirm Motor Compatibility

Check the servo motor’s rated power, voltage, current, encoder, and feedback compatibility. The motor should be selected according to the drive’s supported combinations and the application’s torque and speed requirements.

Incorrect motor matching may cause drive faults, poor performance, or excessive current demand.

3. Mounting and Cooling

The supplied dimensions are 55 × 150 × 146 mm. Confirm the mounting drawing and required clearances before designing the electrical cabinet.

Install the drive in the recommended vertical orientation and maintain the manufacturer’s ventilation clearances. Avoid obstructing airflow around the unit.

The drive is designed for installation in an appropriate electrical enclosure. Environmental conditions such as ambient temperature, humidity, dust, and vibration should remain within the specified limits.

4. EMC and Grounding

This model does not include an integrated EMC filter. The installation design should therefore consider the required external EMC measures.

Use suitable shielded motor cables, grounding arrangements, cable routing, and any required external filtering components according to the manufacturer’s instructions and applicable electrical standards.

Keep power cables separated from sensitive signal and communication cables where required to reduce electromagnetic interference.

5. Sercos Network Configuration

When using the Sercos interface, verify the controller’s compatibility and configure the network according to the system architecture.

Check the communication cables, connectors, network topology, node configuration, and communication parameters. Incorrect network configuration may prevent the controller from establishing communication with the drive.

6. Parameter Configuration and Commissioning

Commissioning should include motor identification, control-mode configuration, motion limits, speed references, acceleration and deceleration settings, and relevant safety parameters.

After configuration, test motor direction, response to motion commands, feedback signals, fault handling, and emergency-stop behavior as required by the machine design.

Record the final settings and retain the commissioning documentation for future maintenance.

Compatible System Components

The LXM28SU04M3X operates as part of a complete servo-control system. The following components may be used depending on the machine architecture.

The listed components are examples of equipment used in a servo installation. They are not necessarily included with the LXM28SU04M3X.

Alternative Models and Replacement Considerations

The LXM28SU04M3X belongs to the Lexium 28S family. When selecting an alternative, engineers should compare voltage, power, output current, communication interface, filtering, and motor compatibility.

Before replacing the LXM28SU04M3X, compare:

• Rated supply voltage and phase configuration.
• Continuous and peak output current.
• Rated motor power.
• Sercos communication compatibility.
• Motor encoder and feedback requirements.
• EMC filter configuration.
• Safety functions and wiring.
• Mounting dimensions and cooling requirements.
• Controller configuration and motion parameters.

A replacement with the same power rating may still require changes to communication hardware, control software, motor cabling, or commissioning procedures.

Key Advantages

Compact Design

The compact Lexium 28 housing supports installation in appropriately designed machine-control cabinets where space is limited.

400 W Servo Output

The 400 W rating supports compatible servo motor applications in compact automated machinery.

Single-Phase and Three-Phase Supply Options

The drive supports specified single-phase and three-phase supply configurations, providing flexibility for suitable electrical installations.

Sercos Communication

The Sercos configuration allows integration into compatible industrial motion-control networks for coordinated machine operation.

High Peak Current Capability

The 7.8 A peak output current for three seconds supports temporary current demands during suitable acceleration and load changes.

Embedded Safety-Related Functionality

The Lexium 28 platform includes embedded safety-related functionality. Its implementation must follow the manufacturer’s instructions and the machine’s safety design.

Integration with Lexium Servo Motors

The drive is part of the Lexium 28 motion-control ecosystem and can be paired with compatible servo motors for coordinated machine operation.

Technical FAQs

1. What is the Schneider Electric LXM28SU04M3X?

It is a 400 W motion servo drive from the Lexium 28 series. It is designed for compatible AC servo motors and uses a Sercos communication configuration.

2. What is the rated voltage?

The nominal supply voltage is 220 V AC. The drive supports single-phase and three-phase supply arrangements within the specified voltage ranges.

3. What is the continuous output current?

The continuous output current is 2.6 A at a 16 kHz switching frequency.

4. What is the peak output current?

The drive provides a peak output current of 7.8 A for three seconds, subject to the manufacturer’s operating conditions.

5. Does the LXM28SU04M3X have an integrated EMC filter?

No. This model is specified without an integrated EMC filter. External EMC measures should be evaluated during system design.

6. Which communication interface does it use?

The LXM28SU04M3X is a Sercos-configured Lexium 28 servo drive. It should be connected to a compatible Sercos motion controller.

7. Which motors can be used with this drive?

Compatible Schneider Electric Lexium servo motors may be used, subject to the manufacturer’s motor-drive compatibility information. Verify the motor’s power, current, voltage, and feedback configuration before installation.

8. What applications use a 400 W servo drive?

Typical applications include compact packaging machines, automated assembly equipment, labeling systems, material feeding mechanisms, and small positioning axes.

9. What should be checked before purchasing?

Verify the complete model number, supply rating, output current, communication configuration, physical condition, included accessories, and product test status. For replacement projects, compare the existing drive’s configuration with the proposed unit.

10. Can another Lexium 28 drive replace this model?

Not automatically. Lexium 28 models can differ in communication interface, EMC filtering, power rating, and electrical characteristics. A replacement must be checked against the existing motor and motion-control architecture.

Procurement and Maintenance Recommendations

When purchasing the Schneider Electric LXM28SU04M3X, verify the full model number and confirm that the drive has the required Sercos configuration. Do not substitute an EtherCAT or other Lexium 28 variant solely because its power rating is also 400 W.

For new, surplus, or used units, request clear photographs of the nameplate, connectors, housing, and terminals. Confirm the product’s physical condition, available test information, and whether any accessories are included.

Before installation, inspect the mounting surface, cabinet ventilation, power connections, grounding, motor cable, and communication wiring. Since the model does not include an integrated EMC filter, review the external EMC design carefully.

During operation, monitor drive status and fault indications. Keep the cabinet clean, maintain cooling airflow, and inspect electrical connections according to the maintenance schedule. Back up drive parameters and retain the motor and controller configuration records.

For machine upgrades, evaluate the complete motion-control system rather than replacing the drive in isolation. Changes to communication interfaces, motor feedback, safety wiring, and controller configuration may require additional engineering and commissioning.

Conclusion

The Schneider Electric LXM28SU04M3X Lexium 28 Motion Servo Drive is a compact 400 W servo drive designed for compatible AC servo motors in industrial automation applications. It supports single-phase and three-phase AC supply configurations, provides 2.6 A continuous output current and 7.8 A peak output current for three seconds, and uses a Sercos communication configuration.

Its compact design and motion-control capabilities make it suitable for appropriately engineered packaging, assembly, material-handling, and positioning applications. Before installation or replacement, verify the supply configuration, motor compatibility, communication interface, and EMC requirements to ensure reliable integration into the machine-control system.