Product Overview

The Schneider Electric ATV320U02M3C Variable Speed Drive is a compact variable frequency drive from the Altivar Machine ATV320 series, designed for OEM machinery, industrial automation equipment, and compact motor-control applications. It provides adjustable speed and torque control for small three-phase AC motors while helping machine builders achieve a compact and flexible electrical design.

The ATV320U02M3C is designed for a 200–240 V AC three-phase power supply and supports motors with a rated power of 0.18 kW (0.25 HP) under heavy-duty operation. The drive can be used with both asynchronous and synchronous motors, making it suitable for different types of automated machinery.

Unlike larger variable speed drives intended for high-power industrial motors, the ATV320U02M3C focuses on compact machine applications where installation space, motor-control flexibility, and reliable operation are important. Its compact construction allows it to be installed inside control cabinets and machine frames without occupying excessive space.

The drive has specified dimensions of 72 × 143 × 109 mm and a weight of approximately 0.8 kg. Its fanless cooling design can also simplify installation in compact machine enclosures by eliminating the need for a conventional cooling fan.

The ATV320U02M3C can provide functions such as speed regulation, controlled acceleration and deceleration, motor protection, braking control, fault monitoring, and industrial communication. These functions make it suitable for compact conveyors, packaging equipment, feeders, pumps, fans, textile machinery, and other OEM automation systems.

Technical Specifications

Function and Working Principle

The primary function of the ATV320U02M3C is to regulate the speed and torque of a connected three-phase AC motor.

Instead of supplying the motor with a fixed-frequency voltage directly from the electrical network, the variable speed drive converts the incoming AC power and generates a controlled output with adjustable frequency and voltage.

The basic operating process can be described as:

Three-Phase AC Input → Rectifier → DC Bus → Inverter → Variable-Frequency AC Output → Motor

The drive continuously controls the electrical output according to the selected motor-control mode and the required operating speed.

This enables the motor to:

• Start smoothly
• Accelerate according to a programmed ramp
• Operate at adjustable speeds
• Maintain stable torque
• Decelerate under controlled conditions
• Stop using programmed braking functions
• Respond to changing machine requirements

The ATV320 platform supports sensorless flux vector control, which can provide improved torque and speed performance without requiring a motor encoder in many applications.

For applications where energy efficiency is important, appropriate control parameters can also be configured to adapt motor operation to the actual machine load.

Role in Industrial Control Systems

The ATV320U02M3C serves as the motor-control interface between an automation controller and a small three-phase AC motor.

A typical industrial automation system may contain:

• PLC Controller
• HMI
• Variable Speed Drive
• Three-Phase AC Motor
• Sensors
• Safety Devices
• Circuit Protection
• Communication Network
• Machine Mechanism

The PLC can send a speed reference or start/stop command to the drive. The ATV320U02M3C then converts those commands into the appropriate motor-control output.

The drive can also provide operating information back to the automation system, including:

• Motor speed
• Output frequency
• Motor current
• Drive status
• Warning information
• Fault information
• Operating state

This architecture allows the PLC to focus on machine sequencing and process logic while the variable speed drive manages the electrical control of the motor.

For OEM equipment, this separation can make machine design easier to standardize and maintain.

Industrial Applications

The compact power rating and three-phase 200–240 V configuration make the ATV320U02M3C suitable for many low-power industrial applications.

Compact Conveyor Systems

The drive can regulate the speed of small conveyor motors used in production and material-handling equipment. Adjustable acceleration and deceleration can help reduce mechanical impact on belts, rollers, and transported products.

Packaging Machinery

Packaging equipment often requires controlled motor speed for feeding, positioning, conveying, and indexing operations. The ATV320U02M3C can provide adjustable motor operation for compact packaging machines.

Feeding Systems

Small feeders and dosing mechanisms can benefit from variable speed control when material flow needs to be adjusted according to production requirements.

Textile Machinery

The drive can be used for small textile machines requiring controlled motor speed for winding, feeding, or material-handling functions.

Pumps and Fans

Variable speed control can allow small pumps and fans to operate according to actual process requirements rather than running continuously at maximum speed.

OEM Machinery

The compact dimensions of the ATV320U02M3C make it particularly appropriate for machine builders who need to integrate motor control into limited electrical cabinet space.

Automated Mechanical Equipment

Small actuators, rollers, positioning mechanisms, and auxiliary machine functions can use the drive for controlled acceleration, speed regulation, and stopping.

Installation and System Integration

Correct installation and parameter configuration are essential for reliable operation of the ATV320U02M3C.

Before installation, engineers should verify:

• Supply voltage
• Number of supply phases
• Motor rated power
• Motor rated voltage
• Motor rated current
• Motor frequency
• Grounding
• Cable specifications
• Protective devices
• Cabinet ventilation
• EMC requirements
• Communication configuration

Because the ATV320U02M3C uses a three-phase 200–240 V input, it should not be treated as a single-phase-input model when designing the machine’s electrical supply.

Typical Installation Procedure

1. Disconnect and isolate the incoming electrical supply.
2. Verify that the electrical system is fully de-energized.
3. Install the drive securely in the control cabinet.
4. Maintain appropriate clearance around the drive.
5. Connect the three-phase AC input.
6. Connect the motor output terminals.
7. Connect the protective grounding conductor.
8. Connect control inputs and outputs.
9. Connect Modbus or CANopen communication if required.
10. Enter the motor nameplate parameters.
11. Select the appropriate motor-control mode.
12. Configure acceleration and deceleration ramps.
13. Configure current and protection parameters.
14. Perform motor auto-tuning where applicable.
15. Check motor rotation direction.
16. Test the motor at low speed.
17. Verify communication and machine signals.
18. Complete final machine commissioning.

Correct grounding and cable routing are especially important in variable frequency drive installations because switching devices inside the drive can generate electrical noise.

Communication and Control Integration

The ATV320U02M3C can be integrated into industrial automation architectures using supported communication interfaces.

Typical communication functions include:

• Start and stop control
• Speed reference
• Frequency monitoring
• Motor current monitoring
• Drive status
• Alarm monitoring
• Fault diagnostics
• Parameter access

Modbus RTU can be used for serial communication with compatible PLCs, HMIs, and automation devices. CANopen can also be used in distributed machine-control architectures.

For larger machine systems, optional communication solutions can extend the drive’s connectivity to the required industrial network architecture.

This makes the ATV320U02M3C suitable not only for standalone motor control but also for coordinated machine automation.

Compatible System Components

The ATV320U02M3C can operate as part of a broader Schneider Electric automation system and can be combined with various industrial components.

The exact accessory selection depends on the motor, application, electrical installation, braking requirements, and communication architecture.

Recommended Alternative Models

When selecting a replacement or alternative drive, engineers should compare motor power, supply phase, voltage, enclosure requirements, control functions, and physical installation requirements.

The ATV320U02M2C may look similar because it is also a compact 0.18 kW ATV320 drive, but the supply configuration is different. For a machine requiring a 200–240 V three-phase input, the ATV320U02M3C is the relevant model.

Key Advantages

• Compact 72 × 143 × 109 mm design
• Lightweight 0.8 kg construction
• 0.18 kW (0.25 HP) heavy-duty motor rating
• Designed for 200–240 V AC three-phase systems
• Supports asynchronous motors
• Supports synchronous motors
• Sensorless flux vector control
• Adjustable speed and torque control
• Maximum output frequency up to 599 Hz
• Integrated brake chopper
• Fanless cooling design
• IP20 protection
• Modbus RTU communication
• CANopen communication
• STO safety function
• SS1 safety function
• SLS safety function
• Suitable for compact OEM machinery
• Compatible with modern industrial automation architectures

Technical FAQs

What is the Schneider ATV320U02M3C?

The ATV320U02M3C is a compact Altivar Machine ATV320 Variable Speed Drive designed to control small three-phase AC motors in industrial automation and OEM machinery.

What motor power does the ATV320U02M3C support?

The drive is rated for 0.18 kW (0.25 HP) under heavy-duty operation.

What is the input voltage?

The ATV320U02M3C is designed for a 200–240 V AC three-phase power supply.

What is the continuous output current?

The nominal continuous output current is approximately 1.5 A under the specified heavy-duty operating conditions.

What are the dimensions?

The specified dimensions are 72 × 143 × 109 mm.

What is the weight?

The product weight is approximately 0.8 kg.

Does the ATV320U02M3C support asynchronous motors?

Yes. The drive supports asynchronous motor-control profiles, including sensorless flux vector control.

Does it support synchronous motors?

Yes. The ATV320 platform also supports sensorless vector control for compatible synchronous motor applications.

Does the drive have an integrated brake chopper?

Yes. The ATV320U02M3C includes an integrated brake chopper for compatible braking applications.

Which communication protocols can be used?

The drive supports Modbus RTU and CANopen communication, with additional communication solutions available depending on the system configuration.

Is the ATV320U02M3C fan-cooled?

The compact model uses a fanless cooling design, which can simplify installation in suitable machine environments.

What is the difference between ATV320U02M3C and ATV320U02M2C?

The most important difference is the power-supply configuration. The ATV320U02M3C is designed for 200–240 V three-phase input, while the ATV320U02M2C belongs to the single-phase-input configuration.

Where is the ATV320U02M3C commonly used?

Typical applications include compact conveyors, packaging machines, feeders, pumps, fans, textile machinery, material-handling equipment, and OEM industrial automation systems.

Conclusion

The Schneider Electric ATV320U02M3C Variable Speed Drive is a compact and versatile motor-control solution designed for low-power industrial machinery. With a 0.18 kW (0.25 HP) rating and a 200–240 V AC three-phase input, it provides precise speed and torque control for small asynchronous and synchronous motor applications.

Its 72 × 143 × 109 mm dimensions and 0.8 kg weight make the drive particularly attractive for OEM machine designs where control-panel space is limited. The fanless construction, IP20 protection, integrated brake chopper, sensorless vector control, and machine-oriented safety functions provide a useful combination of performance and compactness.

For machine builders, system integrators, and industrial maintenance engineers, the ATV320U02M3C can serve as a dependable motor-control component in packaging equipment, conveyors, pumps, fans, textile machinery, feeders, and other automated systems. When the application requires a compact 0.18 kW variable speed drive with 200–240 V three-phase input, this ATV320 model provides a practical foundation for efficient and flexible industrial motor control.