ALTIVAR-320C Variable Speed Drive 0.55KW 400V Three-Phase

The Schneider Electric ATV320U06N4C is a variable speed drive from the Altivar Machine ATV320 range, designed to control asynchronous and synchronous motors in industrial machinery. It delivers a rated power of 0.55 kW in heavy duty operation, three-phase 380 to 500 V AC supply, and a rated output current of 1.9 A. Its compact format makes it easy to integrate into electrical panels and machines where optimizing available space is important.

The Altivar 320 combines sensorless vector control, integrated Modbus and CANopen communications, C2 EMC filter, braking chopper, PID regulator and safety functions for machinery. Its wide output frequency range, up to 599 Hz, and different control profiles make it suitable for conveyors, pumps, fans, packaging machinery, material handling and numerous industrial automation applications.

Main features of the Schneider Electric ATV320U06N4C

• Variable speed drive for industrial machinery.
• Brand: Schneider Electric.
• Range: Altivar Machine ATV320.
• Reference: ATV320U06N4C.
• Standard version.
• Control format: compact.
• Rated power: 0.55 kW / 0.75 HP in heavy duty operation.
• Supply: three-phase 380-500 V AC.
• Supply voltage tolerance: -15% / +10%.
• Supply frequency: 50-60 Hz.
• Continuous output rated current: 1.9 A at 4 kHz.
• Maximum transient current: 2.9 A for 60 seconds.
• Line current: 2.8 A at 380 V and 2.2 A at 500 V.
• Output frequency: 0.1-599 Hz.
• Nominal switching frequency: 4 kHz.
• Adjustable switching frequency: 2-16 kHz.
• Compatible with asynchronous and synchronous motors.
• Sensorless vector control.
• Integrated Class C2 EMC filter.
• Integrated serial Modbus and CANopen.
• Safety functions for machinery.
• Integrated braking chopper.
• DC injection braking.
• Adjustable PID regulator.
• Protection rating: IP20.
• Fan cooling.
• Vertical panel mounting.

0.55 kW power for three-phase supply

The ATV320U06N4C is sized for 0.55 kW motors in heavy duty operation, equivalent to approximately 0.75 HP. Its three-phase supply supports a voltage range from 380 to 500 V AC, with a tolerance of -15% to +10%.

The continuous output rated current is 1.9 A at a switching frequency of 4 kHz. During transient demands it can provide up to approximately 2.9 A for 60 seconds, offering margin for applications that require high torque during acceleration or temporary load variations.

Feature Value Rated power 0.55 kW Equivalent power 0.75 HP Supply type Three-phase Supply voltage 380-500 V AC Voltage tolerance -15% / +10% Mains frequency 50-60 Hz Output rated current 1.9 A Maximum transient current 2.9 A for 60 s Line current at 380 V 2.8 A Line current at 500 V 2.2 A Apparent power at 500 V 1.9 kVA Maximum prospective short-circuit current of the mains 5 kA

Control of asynchronous and synchronous motors

The Altivar Machine ATV320 is designed to control both asynchronous and synchronous motors. This flexibility makes it easy to use in different machine architectures without limiting the system to a single motor technology.

For asynchronous motors it includes different control profiles, including sensorless flux vector control, 2-point or 5-point voltage/frequency control and energy-saving profiles. For synchronous motors it also provides sensorless vector control.

Sensorless vector control

Sensorless vector control makes it possible to regulate motor speed and torque without the need to install an encoder in many applications. This simplifies installation and provides suitable dynamic performance for industrial machinery, conveyors and motion systems.

The drive also features automatic slip compensation and different options for configuring acceleration and deceleration ramps.

Output frequency up to 599 Hz

The ATV320U06N4C offers an adjustable output frequency from 0.1 to 599 Hz, providing a wide range to adapt motor speed to application requirements.

High frequencies must always be used within the mechanical and electrical limits defined by the motor and machine manufacturer.

Parameter Value Minimum output frequency 0.1 Hz Maximum output frequency 599 Hz Nominal switching frequency 4 kHz Adjustable switching frequency 2-16 kHz

Integrated Modbus and CANopen

The Schneider Electric ATV320U06N4C includes serial Modbus and CANopen communication protocols as standard. These communications allow the drive to be integrated into automation systems, PLCs and industrial networks to exchange commands, setpoints, status and parameters.

The Altivar Machine ATV320 platform also supports optional communication modules to expand integration possibilities in industrial networks.

• CANopen.
• EtherCAT.
• Profibus DP V1.
• PROFINET.
• Ethernet Powerlink.
• EtherNet/IP.
• DeviceNet.

Inputs and outputs for automation

The drive includes different inputs and outputs that allow it to be connected directly to pushbuttons, sensors, PLCs, potentiometers and analog signals commonly used in automation.

Element Configuration Digital inputs 7 Logic inputs DI1 to DI6, 24 V DC Safety input STO DI5 Programmable as pulse input up to 30 kHz Analog inputs 3 Digital outputs 3

This equipment makes it easy to use the drive as a standalone control element or integrated into a more complex automation architecture.

Integrated safety functions

The Altivar Machine ATV320 range includes safety functions for machinery, configurable through Schneider Electric SoMove software. These functions make it possible to develop safety architectures adapted to the risk assessment of each machine.

• STO - Safe Torque Off: safe motor torque disconnection.
• SLS - Safely Limited Speed: safe speed limiting.
• SS1 - Safe Stop 1: category 1 safe stop.
• SMS - Safe Maximum Speed: safe maximum speed monitoring.
• GDL - Guard Door Lock: function related to the safe locking of protective doors.

These functions must be configured and integrated into the safety system in accordance with the risk assessment, the architecture used and Schneider Electric official documentation.

Integrated C2 EMC filter

The ATV320U06N4C incorporates an integrated Class C2 electromagnetic compatibility filter. This filter helps limit electromagnetic disturbances generated by the drive when installation, grounding and wiring are carried out in accordance with the manufacturer's instructions.

The integrated EMC filter should not be confused with the physical EMC conformity plate or kit used for certain shielded cable mounting configurations.

EMC conformity kit

For this reference, Schneider Electric identifies the VW3A9524 EMC conformity kit as a compatible accessory. Since February 2026, Schneider Electric indicates that this kit is no longer supplied as standard with the affected ATV320 drives and must be ordered separately when required by the installation.

Integrated braking chopper

The drive includes a braking chopper, allowing a compatible braking resistor to be connected in applications where it is necessary to dissipate regenerative energy generated during rapid deceleration or high-inertia movements.

It also includes a DC injection stop function.

Integrated PID regulator

The ATV320 includes an adjustable PID regulator. This function allows process variables to be controlled using a setpoint signal and a feedback signal, and can be useful in applications such as pumping, ventilation, pressure, flow and other regulation functions.

Integrated protections

Schneider Electric equips the drive with different protection and monitoring functions to help protect both the drive itself and the connected motor.

• Protection against input phase loss.
• Protection against overcurrent between output phases and ground.
• Protection against drive overheating.
• Protection against motor phase-to-phase short circuit.
• Thermal protection.

These internal functions do not replace the external installation protections that must be fitted according to regulations, the electrical diagram and the characteristics of the mains supply.

Compact format for machine panels

The letter C in the ATV320U06N4C reference identifies the compact format of the range. This design is especially suitable for machine builders and electrical panels where reducing the space occupied by drives is desired.

Dimension Value Width 105 mm Height Approx. 142 mm Depth 158 mm Net weight Approx. 1.2 kg Mounting position Vertical ±10°

IP20 protection rating

The ATV320U06N4C has an IP20 protection rating in accordance with IEC 61800-5-1 and IEC 60529. It is primarily intended to be installed inside an electrical cabinet or enclosure that provides the level of protection required by the environment.

Schneider Electric also provides the possibility of achieving a UL Type 1 configuration using the corresponding conformity kit.

Fan cooling

The drive is cooled by an integrated fan. Schneider Electric specifies an approximate dissipation of 27 W at 380 V and 4 kHz under the indicated nominal conditions.

During installation, ventilation clearances and the manufacturer's installation instructions must be respected to avoid excessive temperature inside the cabinet.

Operating temperatures

The drive can operate from -10 to +50 °C without derating. It can be used up to +60 °C by applying the current derating factors defined by Schneider Electric.

Environmental condition Value Operating temperature without derating -10 to +50 °C Maximum temperature with derating +60 °C Storage temperature -25 to +70 °C Transport temperature -25 to +70 °C Pollution degree 2 Overvoltage category III

Designed for machinery

Schneider Electric defines the Altivar Machine ATV320 as a drive intended for both simple and advanced machinery. Its combination of motor control, communications, safety functions and inputs/outputs makes it suitable for numerous industrial applications.

• Conveyor belts and conveyor systems.
• Packaging machinery.
• Material handling equipment.
• Textile machinery.
• Pumps.
• Fans.
• Process machines.
• Compatible lifting equipment.
• Material transformation machinery.
• Automated PLC-based systems.

Configuration with SoMove

The ATV320 can be configured and diagnosed using Schneider Electric SoMove software. This tool allows work with motor parameters, ramps, inputs and outputs, communications and advanced safety functions.

The range also includes ATV Logic programming functions for certain automation needs directly from the drive.

Standards and certifications

The Schneider Electric Altivar Machine ATV320 is developed in accordance with applicable international standards for variable speed electric drives, including IEC 61800-5-1. Schneider Electric also specifies different certifications and international markings depending on the version and sales market.

Schneider Electric ATV320U06N4C technical summary

Feature Specification Brand Schneider Electric Range Altivar Machine ATV320 Reference ATV320U06N4C Type Variable speed drive Format Compact Rated power 0.55 kW / 0.75 HP Duty Heavy duty Supply Three-phase Supply voltage 380-500 V AC Mains frequency 50-60 Hz Output rated current 1.9 A Maximum transient current 2.9 A for 60 s Maximum output frequency 599 Hz Nominal switching frequency 4 kHz EMC filter Integrated Class C2 Integrated communications Serial Modbus and CANopen Braking chopper Integrated PID regulator Integrated Protection rating IP20 Cooling Fan Approximate dimensions 105 x 142 x 158 mm Net weight Approx. 1.2 kg

The Schneider Electric ATV320U06N4C Altivar Machine ATV320 is a compact solution for controlling motors up to 0.55 kW on three-phase 380 to 500 V networks. Its 1.9 A rated output, sensorless vector control, Modbus and CANopen communications, C2 EMC filter, safety functions and expansion possibilities through industrial networks make it a highly versatile drive for automation and machinery.