Product Overview

The Schneider Electric ATV320U07M3C Variable Speed Drive is a compact Altivar Machine ATV320 frequency inverter designed for adjustable speed control of three-phase AC motors in industrial machinery, OEM equipment, and automated production systems.

This model is designed for a 200–240 V AC three-phase power supply and provides a 0.75 kW (1 HP) motor rating for heavy-duty applications. It converts fixed-frequency AC electrical power into a controlled three-phase output, allowing the connected motor to operate at variable speeds while maintaining controlled acceleration, deceleration, and torque.

The ATV320U07M3C uses the Compact-format design of the ATV320 family. Its specified dimensions are 72 × 143 × 138 mm, with an approximate weight of 1 kg. This compact footprint makes it suitable for machine control cabinets where installation space is limited.

The drive is intended for applications that require more than simple motor starting and stopping. It provides adjustable speed control, motor protection, braking functions, communication capabilities, and machine-oriented safety functions.

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

Technical Specifications

Function and Working Principle

The primary function of the ATV320U07M3C is to regulate the speed and torque of a three-phase AC motor.

The drive receives a fixed-frequency three-phase AC supply and converts it into a controlled variable-frequency output.

The basic operating sequence is:

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

The input AC power is first converted into DC power. The inverter section then generates a controlled three-phase output with adjustable frequency and voltage.

Motor speed is primarily controlled by adjusting output frequency. The drive also regulates voltage and current to provide the required motor torque.

This allows the ATV320U07M3C to perform functions such as:

• Adjustable motor speed
• Controlled acceleration
• Controlled deceleration
• Soft starting
• Controlled stopping
• Torque regulation
• Low-speed operation
• Motor current monitoring
• Motor overload protection
• Dynamic braking
• Fault detection
• Alarm monitoring
• Remote operation
• PLC-based control

Sensorless flux vector control can provide improved motor performance when compared with basic V/F control in suitable applications.

Role in Industrial Control Systems

The ATV320U07M3C normally operates as the dedicated motor-control device within an automated machine.

A typical architecture can be represented as:

PLC / Controller → ATV320U07M3C → Three-Phase AC Motor → Mechanical Load

The PLC controls the machine sequence and process logic, while the drive manages the electrical operation of the motor.

For example, a PLC can send a speed reference to the ATV320U07M3C when a conveyor needs to run at a specific speed. The drive processes the reference and generates the corresponding motor output.

The drive can also send operating information back to the controller.

Typical feedback information includes:

• Output frequency
• Motor current
• Speed reference
• Drive status
• Warning conditions
• Fault conditions
• Operating state
• Diagnostic information

This makes it possible for the automation controller to monitor motor operation and react to abnormal conditions.

In multi-motor machinery, several ATV320 drives can also be coordinated by the same PLC, with each drive controlling an individual motor.

Industrial Applications

Conveyor Systems

The ATV320U07M3C can be used for conveyor motors in manufacturing, assembly, packaging, and material-handling applications.

Variable speed control allows conveyor speed to be synchronized with production processes.

Controlled acceleration and deceleration can also help reduce mechanical stress on belts, rollers, gears, and transported products.

Packaging Machinery

Packaging machines often require different motor speeds for feeding, indexing, conveying, and positioning.

The ATV320U07M3C can provide adjustable motor operation while allowing the PLC to coordinate machine functions.

Pumps

Small industrial pumps can use variable speed operation to regulate flow according to process requirements.

This is particularly useful where the process demand changes over time.

Fans and Ventilation Systems

The drive can regulate compatible fan motors in industrial ventilation and cooling applications.

Adjustable speed provides greater flexibility than fixed-speed operation.

Feeders

Feeding and dosing equipment can use the ATV320U07M3C to regulate motor speed according to material-flow requirements.

Material Handling

Small rollers, transfer mechanisms, feeders, and other material-handling equipment can benefit from controlled motor speed.

Textile Machinery

Textile equipment may require stable and adjustable motor speed for winding, feeding, and material transportation.

The ATV320U07M3C can provide variable speed control for suitable textile applications.

OEM Machine Building

The Compact-format enclosure provides a practical solution for OEM machine builders that need to install variable speed drives inside relatively small control cabinets.

Installation and System Integration

Correct installation is important for reliable drive performance.

Before installing the ATV320U07M3C, engineers should verify:

• Three-phase input voltage
• Motor rated voltage
• Motor rated current
• Motor rated power
• Motor frequency
• Protective grounding
• Circuit protection
• Motor cable size
• Control wiring
• Cabinet ventilation
• EMC requirements
• Communication requirements

The ATV320U07M3C is designed for a 200–240 V AC three-phase supply.

Typical Installation Procedure

1. Disconnect and isolate the incoming electrical supply.
2. Confirm that the drive and associated circuits are de-energized.
3. Mount the drive securely inside the control cabinet.
4. Install the unit in the recommended orientation.
5. Maintain appropriate ventilation clearance.
6. Connect the three-phase AC input.
7. Connect the three-phase motor output.
8. Connect protective grounding.
9. Connect digital and analog control wiring.
10. Connect communication cables if required.
11. Enter the motor nameplate information.
12. Select the appropriate motor-control mode.
13. Configure acceleration and deceleration ramps.
14. Configure motor protection settings.
15. Perform motor auto-tuning when applicable.
16. Verify motor rotation direction.
17. Perform a low-speed motor test.
18. Check drive status and diagnostic information.
19. Verify PLC communication.
20. Perform a complete machine test.

The ATV320U07M3C is specified without an integrated EMC filter, so the overall machine electrical design should account for applicable EMC requirements. External filtering or other EMC measures may be necessary depending on the installation.

Communication and Control Integration

The ATV320U07M3C supports communication-based control for industrial automation systems.

The standard communication capabilities include Modbus serial communication and CANopen.

These communication interfaces can be used to exchange control and monitoring information between the drive and an automation controller.

Typical data includes:

• Start commands
• Stop commands
• Speed references
• Frequency feedback
• Motor current
• Drive status
• Warning information
• Fault information
• Diagnostic data
• Parameter information

Additional communication options can be used when the machine requires integration with industrial Ethernet or other fieldbus systems.

Possible network technologies include:

• Modbus
• CANopen
• PROFIBUS DP
• PROFINET
• EtherNet/IP
• EtherCAT
• Other compatible industrial networks

The exact network architecture depends on the selected communication option and the machine-control system.

Compatible System Components

The ATV320U07M3C can be integrated with various industrial automation components.

Accessory selection should be based on the motor specifications, electrical environment, braking requirements, EMC design, communication architecture, and machine safety requirements.

Recommended Alternative Models

The following ATV320 models may be considered for applications with similar requirements.

The ATV320U06M3C can be selected when approximately 0.55 kW motor capacity is sufficient, while the ATV320U11M3C can be considered for applications requiring approximately 1.1 kW.

For replacement projects, the motor’s rated current and voltage should always be checked in addition to the nominal power. Mechanical dimensions, drive format, communication functions, braking requirements, EMC configuration, and safety functions should also be verified before replacement.

Key Advantages

• Altivar Machine ATV320 Compact format
• 0.75 kW (1 HP) motor rating
• 200–240 V AC three-phase input
• Three-phase AC motor output
• Compact 72 × 143 × 138 mm dimensions
• Approximately 1 kg weight
• Sensorless flux vector control
• V/F control
• Compatible with asynchronous motors
• Compatible with synchronous motors
• Adjustable speed control
• Adjustable torque control
• Controlled acceleration and deceleration
• Integrated brake chopper
• Modbus serial communication
• CANopen communication
• Optional industrial network integration
• STO safety function
• SS1 safety function
• SLS safety function
• IP20 protection
• Suitable for OEM machinery
• Suitable for compact control cabinets
• Flexible PLC integration
• Suitable for conveyors, pumps, fans, feeders and packaging equipment

Technical FAQs

What is the Schneider ATV320U07M3C?

The ATV320U07M3C is a 0.75 kW Altivar Machine ATV320 Variable Speed Drive designed for controlling compatible three-phase AC motors from a 200–240 V three-phase power supply.

What motor power does it support?

The drive is designed for a 0.75 kW (1 HP) motor application.

What input voltage does it require?

The ATV320U07M3C uses a 200–240 V AC three-phase input supply.

What are the dimensions?

The specified dimensions are 72 × 143 × 138 mm.

How much does it weigh?

The approximate weight is 1 kg.

What type of motor can it control?

The ATV320 platform supports compatible asynchronous and synchronous AC motors.

Does it support sensorless vector control?

Yes. Sensorless flux vector control is available for applications requiring improved torque and speed performance.

Does it include a brake chopper?

Yes. The drive includes an integrated brake chopper for compatible dynamic-braking applications.

Does the ATV320U07M3C have an integrated EMC filter?

This model is specified without an integrated EMC filter. Depending on the machine installation and EMC requirements, external filtering or other EMC measures may be necessary.

Which communication protocols are supported?

The standard communication interfaces include Modbus serial and CANopen. Additional communication options can be used for other industrial networks.

Can it communicate with a PLC?

Yes. The ATV320U07M3C can be integrated with PLC systems for start/stop commands, speed references, status monitoring, diagnostics, and coordinated machine control.

What safety functions are available?

The ATV320 platform supports machine-safety functions including Safe Torque Off (STO), Safe Stop 1 (SS1), and Safely Limited Speed (SLS).

Where is the ATV320U07M3C commonly used?

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

What is the difference between ATV320U07M3C and ATV320U07M2B?

Both models are in the ATV320 family and are intended for approximately 0.75 kW motor applications. The key difference is their input configuration and physical design. The ATV320U07M3C is designed for 200–240 V three-phase input and uses the Compact format, while the ATV320U07M2B is designed for 200–240 V single-phase input and uses the Book format.

What should be checked before replacing an ATV320U07M3C?

The replacement should be checked against motor rated current, motor voltage, supply voltage, overload requirements, mounting dimensions, drive format, communication requirements, EMC configuration, braking requirements, and machine safety functions.

Conclusion

The Schneider Electric ATV320U07M3C Variable Speed Drive is a compact 0.75 kW AC frequency inverter designed for three-phase motor control in industrial machinery, OEM equipment, and automated production systems.

With a 200–240 V AC three-phase input, adjustable speed control, sensorless flux vector technology, integrated braking capability, Modbus and CANopen communication, and machine-safety functions, the drive provides a flexible solution for applications requiring controlled motor operation.

Its specified 72 × 143 × 138 mm dimensions and approximately 1 kg weight make it well suited to compact control cabinets and machine electrical systems. The Compact-format construction is particularly useful when panel space is an important design consideration.

The ATV320U07M3C can work together with PLCs, HMIs, three-phase motors, sensors, braking components, communication modules, and other industrial automation equipment. Common applications include conveyors, packaging systems, feeders, pumps, fans, textile machinery, material-handling equipment, and OEM machines.

For engineers and system integrators, selecting the ATV320U07M3C requires consideration of the motor’s rated power and current, 200–240 V three-phase supply, application duty, installation dimensions, EMC requirements, communication architecture, braking requirements, and machine safety design. When these factors are correctly matched, the ATV320U07M3C provides a compact and versatile solution for modern industrial motor speed control.