Schneider ATV71HU55N4 Variable Speed Drive

The Schneider Electric ATV71HU55N4 is a high-performance Variable Speed Drive (VSD) designed to control three-phase asynchronous and synchronous motors across a wide range of industrial applications. As part of the Altivar 71 series, this 5.5 kW drive (equivalent to 7.5 HP) supports advanced motor control techniques such as sensorless vector control, flux vector control, and voltage/frequency (V/F) ratio control.

Tailored for demanding processes that require dynamic response, precision, and robust reliability, the ATV71HU55N4 is widely used in sectors like material handling, packaging, HVAC, pumping systems, and more. It is engineered with built-in Modbus and CANopen communication, Safe Torque Off (STO), and supports additional protocols through modular expansion.

This model not only enhances process efficiency and energy savings, but also ensures machine safety, low downtime, and adaptability across evolving system architectures.

Product Specifications

Product Applications

• Material Handling & Conveyors

  Provides high torque at low speed, ensuring smooth acceleration and deceleration of belts and hoists.

• HVAC Systems

  Efficiently controls fans, compressors, and pumps for reduced energy consumption and improved building automation.

• Pumping Systems

  Maintains flow and pressure control for centrifugal and positive displacement pumps.

• Textile & Packaging Machines

  Enables fine speed adjustments required for web handling, spooling, or synchronized operation.

• CNC Machinery & Tooling

  Ensures consistent motor control under variable loads with torque regulation.

• Industrial Mixers & Agitators

  Supports intermittent or continuous mixing operations with torque control.

Product Advantages

• Advanced Motor Control

  Sensorless vector and flux vector modes ensure optimized motor performance under varying load conditions.

• Built-in Safety Functions

  Includes Safe Torque Off (STO) for emergency stop conditions without using mechanical relays.

• Versatile Communication

  Easily integrates into most automation architectures using built-in or optional communication cards.

• Robust Build Quality

  Designed for industrial-grade applications with wide operating temperature and protection features.

• Energy Efficient Operation

  PID controller, sleep mode, and automatic motor adaptation help lower energy usage.

• Flexible Mounting and Expansion

  Supports modular accessories and options to fit into cabinets or wall-mounted enclosures.

• User-Friendly Programming

  Configuration through Schneider’s SoMove software or via the graphical terminal interface.

Frequently Asked Questions (FAQ)

1. What is the maximum motor power supported by ATV71HU55N4?

   It is rated for motors up to 5.5 kW (7.5 HP) on 380–480V three-phase systems.

2. Can it be used with synchronous motors?

   Yes, it supports both asynchronous and synchronous motor types with proper configuration.

3. Does it have any built-in safety features?

   Yes, Safe Torque Off (STO) is included to prevent unintended motor rotation.

4. What fieldbus protocols are supported?

   Modbus and CANopen are built-in; Profibus DP, DeviceNet, and Ethernet/IP can be added.

5. Is this drive suitable for pump applications?

   Absolutely, it includes PID control and variable torque capability ideal for pumps and fans.

6. What software is used for programming this drive?

   Schneider’s SoMove configuration software or an optional graphical HMI terminal.

7. What is the level of ingress protection (IP rating)?

   It is IP20 rated and should be installed in an enclosure if used in dusty or wet environments.

8. Can the drive support regenerative braking?

   Yes, with an optional dynamic braking resistor or regenerative module.

9. What is the recommended installation environment?

   Dry, ventilated industrial enclosures within -10°C to +50°C ambient temperature.

10. Can this model be networked with other drives?

    Yes, via Modbus, CANopen or additional fieldbus modules for synchronized control.