Product Overview

The Schneider Electric ATV320U06N4C Variable Speed Drive is a compact Altivar Machine ATV320 frequency inverter designed for controlled motor operation in industrial machinery, OEM equipment, and automated production systems. It provides adjustable speed and torque control for three-phase AC motors while combining a compact enclosure with advanced motor-control, communication, and machine-safety functions.

The ATV320U06N4C is designed for a 380–500 V AC three-phase power supply and is suitable for a 0.55 kW (0.75 HP) motor under heavy-duty operating conditions. This voltage range makes the drive suitable for industrial facilities using common 400 V and 480 V three-phase electrical systems.

As a frequency inverter, the ATV320U06N4C converts fixed-frequency AC power into a controlled variable-frequency output. This allows the connected motor to operate at adjustable speeds while providing controlled acceleration, deceleration, torque regulation, braking, and motor protection.

The model uses the Compact-format ATV320 enclosure. Its specified dimensions are 105 × 142 × 158 mm, and its approximate weight is 1.2 kg. This physical configuration allows the drive to be integrated into machine control panels where cabinet space and component arrangement are important design considerations.

The ATV320U06N4C is suitable for a wide variety of applications, including conveyors, packaging machines, feeders, pumps, fans, material-handling equipment, textile machinery, and general OEM automation.

Technical Specifications

Function and Working Principle

The main purpose of the ATV320U06N4C is to regulate the speed and torque of a three-phase AC motor.

Unlike a conventional starter that generally provides fixed-frequency motor operation, the frequency inverter can continuously modify the electrical frequency supplied to the motor.

Its basic operating process is:

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

The incoming three-phase AC power is converted into DC power through the drive’s input stage. The inverter section then converts the DC energy into a controlled three-phase AC output.

By adjusting the output frequency and voltage, the drive can regulate motor speed and torque.

This enables functions such as:

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

The sensorless flux vector-control function can improve torque and speed characteristics in applications where basic V/F control is not sufficient.

Role in Industrial Control Systems

The ATV320U06N4C normally serves as the motor-control element within an automated machine.

A typical system architecture can be represented as:

PLC / Controller → ATV320U06N4C → Three-Phase AC Motor → Mechanical Load

The PLC manages machine logic, sequencing, interlocking, and process conditions. The drive receives operating commands and speed references and converts them into the appropriate motor-control output.

The drive can also provide feedback information to the automation controller.

Typical information includes:

• Motor frequency
• Motor current
• Drive status
• Speed reference
• Alarm state
• Fault state
• Operating status
• Diagnostic information

This architecture allows the PLC and drive to perform separate but coordinated tasks.

For example, a PLC can determine that a conveyor needs to operate at 60% of its nominal speed. The ATV320U06N4C receives the corresponding speed reference and regulates the motor to the required operating condition.

This type of control architecture is common in modern OEM machinery because it provides greater flexibility than fixed-speed motor starters.

Industrial Applications

Conveyor Systems

The ATV320U06N4C can control small conveyor motors used in manufacturing, assembly, packaging, and material-handling applications.

Adjustable speed allows the conveyor to be synchronized with other machine operations.

Packaging Machinery

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

The drive provides controlled acceleration and deceleration for these machine functions.

Pumps

Small process and utility pumps can use variable speed control to adjust flow according to changing process requirements.

Fans and Cooling Systems

Industrial fans can be operated at variable speeds according to ventilation and cooling requirements.

This provides greater control than fixed-speed operation.

Feeders

The drive can control motors in feeding and dosing mechanisms where material movement needs to be adjusted according to production conditions.

Material Handling

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

Textile Machinery

The ATV320U06N4C can be used for compatible winding, feeding, and material-transport applications requiring stable motor operation.

OEM Machinery

Its Compact-format housing makes the drive suitable for machine builders that need to integrate variable speed control into relatively small electrical cabinets.

Installation and System Integration

Correct installation and configuration are essential for safe operation.

Before installation, engineers should verify:

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

The ATV320U06N4C is designed for 380–500 V AC three-phase input, so the machine electrical system must be compatible with this voltage range.

Typical Installation Procedure

1. Isolate the incoming electrical supply.
2. Verify that the installation is fully de-energized.
3. Mount the drive securely on the panel.
4. Install the drive in the recommended orientation.
5. Maintain appropriate ventilation clearance.
6. Connect the three-phase AC supply.
7. Connect the three-phase motor.
8. Connect protective grounding.
9. Connect control inputs and outputs.
10. Install communication wiring 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 parameters.
15. Perform auto-tuning when required.
16. Verify motor rotation direction.
17. Perform a low-speed test.
18. Check drive status and fault information.
19. Verify PLC communication.
20. Test the complete machine.

Power cables and low-level control or communication cables should be routed appropriately to reduce electromagnetic interference.

Communication and Control Integration

The ATV320U06N4C supports integration into industrial automation architectures through its communication capabilities.

Modbus serial communication provides a practical method for connecting the drive to compatible controllers and other automation devices.

CANopen can be used for distributed machine-control applications.

Additional communication options can be selected when integration with other industrial networks is required.

Depending on the selected communication solution, the drive can participate in networks such as:

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

Communication can be used to exchange:

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

This allows the ATV320U06N4C to function as an integrated part of an automated production system.

Compatible System Components

The ATV320U06N4C can be used together with a variety of electrical and automation components.

The final accessory selection should be based on motor characteristics, electrical installation, braking requirements, EMC conditions, communication architecture, and machine safety requirements.

Recommended Alternative Models

The following ATV320 models can be considered for applications with similar motor-control requirements.

The ATV320U04N4C is appropriate when a 0.37 kW motor rating is sufficient, while the ATV320U07N4C can be considered when the application requires approximately 0.75 kW.

For replacement applications, engineers should verify the motor’s rated current, overload requirements, input voltage, mounting dimensions, communication architecture, braking requirements, and safety functions before selecting an alternative.

Key Advantages

• Altivar Machine ATV320 Compact format
• 0.55 kW (0.75 HP) heavy-duty motor rating
• 380–500 V AC three-phase input
• Three-phase AC motor output
• Compact 105 × 142 × 158 mm enclosure
• Approximately 1.2 kg weight
• Sensorless flux vector control
• V/F motor control
• Supports compatible asynchronous motors
• Supports compatible synchronous motors
• Adjustable speed and torque
• Output frequency up to 599 Hz
• 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 industrial automation
• Flexible PLC integration
• Suitable for conveyors, pumps, fans, feeders and packaging machines

Technical FAQs

What is the Schneider ATV320U06N4C?

The ATV320U06N4C is a 0.55 kW Altivar Machine ATV320 Variable Speed Drive designed to control three-phase AC motors in industrial machinery and OEM automation systems.

What motor power does it support?

The ATV320U06N4C is designed for a 0.55 kW (0.75 HP) motor application under the specified heavy-duty rating.

What input voltage does it require?

The drive is designed for a 380–500 V AC three-phase power supply.

What are the dimensions?

The specified dimensions are 105 × 142 × 158 mm.

How much does the ATV320U06N4C weigh?

The approximate weight is 1.2 kg.

What type of motors can it control?

The ATV320 platform supports compatible asynchronous and synchronous 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 ATV320U06N4C includes an integrated brake chopper for compatible dynamic-braking applications.

Which communication protocols are available?

The drive supports Modbus serial communication and CANopen. Additional industrial communication options can be added through appropriate option modules.

Can the drive communicate with a PLC?

Yes. The ATV320U06N4C can be integrated with PLC-based automation systems for start/stop commands, speed references, status monitoring, and diagnostics.

What safety functions does it provide?

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

Where is the ATV320U06N4C commonly used?

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

What is the difference between ATV320U06N4B and ATV320U06N4C?

Both models are designed for 0.55 kW, 380–500 V three-phase applications. The principal difference is the physical format. The ATV320U06N4B uses the Book format, while the ATV320U06N4C uses the Compact format, resulting in different mechanical dimensions and installation arrangements.

Conclusion

The Schneider Electric ATV320U06N4C Variable Speed Drive is a compact 0.55 kW AC frequency inverter designed for motor-control applications using 380–500 V three-phase electrical supplies.

As part of the Altivar Machine ATV320 family, it combines adjustable speed control, sensorless flux vector technology, braking capability, communication functions, and machine-safety features in a compact enclosure.

With specified dimensions of 105 × 142 × 158 mm and an approximate weight of 1.2 kg, the ATV320U06N4C provides a practical solution for machine builders and system integrators that need variable speed control while maintaining an efficient control-panel layout.

The drive can be integrated with PLCs, HMIs, three-phase motors, sensors, braking components, communication networks, and other industrial automation equipment. This makes it suitable for conveyors, packaging machines, feeders, pumps, fans, textile machinery, material-handling systems, and other automated production equipment.

For OEM manufacturers, automation engineers, and maintenance professionals, the ATV320U06N4C should be selected by considering the motor’s rated power and current, 380–500 V three-phase supply, application duty, mounting dimensions, communication requirements, EMC conditions, braking requirements, and machine safety architecture. When these parameters are correctly matched, the drive provides a compact and flexible solution for modern industrial motor control.