Product Overview

The Schneider ATV320U55S6C Variable Speed Drive is a compact and high-performance AC drive from the Altivar Machine ATV320 series, designed to provide precise motor speed regulation, advanced torque control, and reliable energy-efficient operation for industrial automation systems. Rated for 5.5 kW applications, the drive operates with a three-phase 525–600 VAC power supply and supports both asynchronous and synchronous motors.

Engineered for OEM machine builders and industrial manufacturers, the ATV320U55S6C combines advanced motor control algorithms, integrated communication capabilities, comprehensive protection functions, and a compact cabinet-friendly design. The drive delivers excellent dynamic response, stable low-speed operation, and high process accuracy while reducing mechanical wear, lowering maintenance requirements, and improving overall production efficiency.

With overall dimensions of 150 × 232 × 178 mm and an approximate weight of 3.5 kg, the drive is ideal for installation inside industrial control cabinets where reliability, flexibility, and efficient space utilization are essential.

Typical applications include packaging machinery, conveyor systems, pumps, compressors, fans, material handling equipment, food and beverage processing, textile machinery, woodworking equipment, automated assembly lines, and OEM industrial machines.

Technical Specifications

Function and Working Principle

The ATV320U55S6C converts fixed-frequency AC input power into adjustable voltage and frequency output, enabling precise motor speed and torque control according to process requirements.

A simplified operating sequence is:

Three-Phase AC Supply → Rectifier → DC Bus → Inverter → AC Motor → Industrial Equipment

The drive continuously monitors operating conditions and dynamically adjusts output parameters to ensure stable performance, efficient energy usage, and reliable equipment protection.

Its primary functions include:

• Variable motor speed regulation
• High-performance sensorless vector control
• Precise torque management
• Soft start and soft stop
• Adjustable acceleration and deceleration
• Energy-saving motor operation
• Motor overload protection
• Integrated fault diagnostics
• PID process control
• Industrial communication support

Role in Industrial Automation Systems

The ATV320U55S6C serves as the intelligent motor control center within industrial automation systems.

Typical system architecture:

PLC / Industrial Controller

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ATV320U55S6C Variable Speed Drive

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Three-Phase AC Motor

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Industrial Equipment

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Production Process

By accurately regulating motor speed and torque, the drive improves production efficiency, minimizes equipment wear, and enhances process stability.

Industrial Applications

Packaging Machinery

Suitable for:

• Filling machines
• Wrapping systems
• Cartoning equipment
• Labeling machines
• Packaging conveyors

Conveyor Systems

Provides smooth acceleration and deceleration while maintaining stable conveying speed and reducing mechanical shock.

Pumps and Water Treatment

Optimizes pump performance by adjusting motor speed according to actual process demand, improving efficiency and reducing energy consumption.

Fans and HVAC Systems

Enables precise airflow regulation while minimizing operating costs.

Material Handling

Widely used in warehouse automation, transfer systems, lifting equipment, and logistics applications.

Textile Machinery

Supports spinning, weaving, winding, dyeing, and finishing equipment requiring accurate motor speed control.

Food and Beverage Processing

Ideal for mixers, conveyors, bottling lines, packaging machines, and processing equipment.

OEM Machine Building

Frequently integrated into customized industrial machinery requiring reliable motor control, compact installation, and flexible communication.

Installation and Commissioning

Before installation, engineers should verify:

• Input voltage compatibility
• Motor specifications
• Cabinet ventilation
• Protective grounding
• Cable sizing
• Control wiring
• Communication configuration
• Environmental operating conditions

Recommended Installation Procedure

1. Disconnect electrical power.
2. Mount the drive vertically inside the control cabinet.
3. Connect the three-phase input power.
4. Connect the motor output terminals.
5. Connect protective earth.
6. Wire the control circuits.
7. Configure communication interfaces if required.
8. Verify all electrical connections.
9. Restore power.
10. Configure motor parameters.
11. Set acceleration and deceleration profiles.
12. Configure protection functions.
13. Test motor rotation.
14. Verify communication with the PLC or HMI.
15. Complete system commissioning.

Compatible System Components

Recommended Alternative Models

Key Advantages

• Compact Altivar Machine ATV320 design
• Rated for 5.5 kW motor applications
• Designed for 525–600 VAC three-phase power systems
• High-performance sensorless vector control
• Stable low-speed torque output
• Smooth acceleration and deceleration
• Energy-efficient motor management
• Advanced protection functions
• Industrial communication capability
• Reliable continuous-duty operation
• Easy installation and maintenance
• Suitable for OEM and factory automation
• Dimensions 150 × 232 × 178 mm
• Approximate weight 3.5 kg

Technical FAQs

What is the Schneider ATV320U55S6C?

The ATV320U55S6C is a 5.5 kW Variable Speed Drive from the Schneider Electric Altivar Machine ATV320 series designed for industrial motor control.

What is the primary function of this drive?

It converts fixed-frequency AC power into adjustable voltage and frequency output, allowing precise motor speed and torque regulation.

What are the physical dimensions?

The drive measures 150 × 232 × 178 mm.

What is the approximate weight?

The drive weighs approximately 3.5 kg.

Which motors are compatible?

It supports compatible three-phase AC induction motors and synchronous motors used in industrial automation systems.

Where is this drive typically installed?

It is installed inside industrial control cabinets for machine automation, motor control, and process applications.

Which industries commonly use this drive?

It is widely used in packaging, food processing, textile manufacturing, material handling, water treatment, HVAC, woodworking, logistics, and OEM machinery.

Does the drive improve energy efficiency?

Yes. By adjusting motor speed according to actual load demand, it helps reduce electrical energy consumption while improving overall production efficiency.

Does it include protection features?

Yes. The drive incorporates comprehensive protection functions including overload protection, fault diagnostics, overheating protection, and continuous operating monitoring.

What should engineers verify before replacing the drive?

Engineers should verify motor rating, input voltage, communication requirements, wiring configuration, cabinet dimensions, cooling conditions, and application compatibility before installation.

Conclusion

The Schneider ATV320U55S6C Variable Speed Drive is a reliable and compact 5.5 kW industrial AC drive designed for demanding automation applications operating on 525–600 VAC three-phase power systems. Its advanced motor control technology, efficient energy management, and integrated protection features make it an ideal solution for modern industrial machinery.

With dimensions of 150 × 232 × 178 mm and an approximate weight of 3.5 kg, the drive is well suited for cabinet-mounted installations where space efficiency and dependable operation are essential.

When integrated with compatible PLCs, HMIs, AC motors, sensors, and industrial communication networks, the ATV320U55S6C delivers accurate motor control, improved productivity, reduced maintenance requirements, and long-term operational reliability for a wide range of industrial automation applications.