Schneider ATV71HD55N4 Variable Speed Drive

The Schneider Electric ATV71HD55N4 is a variable speed drive (VSD) specifically designed for heavy-duty industrial applications requiring robust performance, precision control, and high energy efficiency. As part of the Altivar 71 series, this model supports complex motor control functions and is engineered to drive three-phase asynchronous and synchronous motors with high torque at low speeds.

Operating at 5.5 kW (7.5 HP), the ATV71HD55N4 supports three-phase 380–480 V input voltage and is built to handle demanding conditions in sectors such as manufacturing, material handling, HVAC, water treatment, and energy-intensive processes. It supports advanced functionality including torque control without sensors, PID regulation, multiple fieldbus options (Modbus, CANopen, Profibus, etc.), and integrated safety features.

Engineered with flexibility in mind, the drive offers extensive customization through configurable I/Os and modular communication cards. Its integrated EMC filters and thermal protection systems further enhance system reliability and minimize maintenance needs.

Product Specifications

Product Applications

• Material Handling and Conveying Systems

  Provides reliable speed and torque control for conveyors, hoists, and cranes.

• HVAC Systems

  Controls fans, pumps, and compressors for efficient energy use and reduced wear.

• Pumps and Fans in Utilities

  Ideal for variable torque loads like centrifugal pumps in water treatment plants.

• Machine Tools

  Delivers precision control for lathes, mills, grinders, and CNC machines.

• Chemical and Process Industries

  Offers torque regulation and speed control in batch processing and dosing operations.

• Renewable Energy

  Supports operation of wind and solar tracking systems with high start/stop precision.

Product Advantages

• High Performance Motor Control

  Supports sensorless vector and flux vector control with high torque at low speeds.

• Flexible Communication Options

  Supports multiple fieldbus protocols for easy integration into complex automation networks.

• Customizable I/O Interface

  Wide range of inputs and outputs allows adaptation to various application requirements.

• Energy Efficiency and Cost Savings

  Reduces energy consumption with built-in PID control and auto-adaptation features.

• Robust Build for Industrial Environments

  Operates reliably under demanding industrial conditions with built-in thermal protection.

• Integrated Safety Features

  Built-in Safe Torque Off (STO) functionality helps ensure operator and machine safety.

• EMC Compliance

  Integrated filters reduce electromagnetic interference, improving compatibility with sensitive equipment.

Frequently Asked Questions (FAQ)

1. What is the rated motor power for the ATV71HD55N4?

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

2. Can this drive be used with synchronous motors?

   Yes, it supports both asynchronous and synchronous motor types.

3. Is Safe Torque Off (STO) included?

   Yes, the drive includes STO as a standard safety feature.

4. What communication protocols are supported natively?

   Modbus and CANopen are supported onboard; others like Profibus and Ethernet can be added via option cards.

5. What types of control modes does it support?

   V/F, sensorless vector control, and flux vector control with or without encoder.

6. Can it operate in outdoor or dusty environments?

   It has an IP20 rating, so it must be installed in a protected enclosure for harsh environments.

7. Does the drive support regenerative braking?

   Yes, with an optional braking resistor or regenerative module.

8. Is it compatible with Schneider SoMove software?

   Yes, configuration and diagnostics can be performed using SoMove.

9. How do I monitor drive parameters?

   Via local HMI (optional), software tools, or remote monitoring through fieldbus.

10. What kind of cooling system is used?

    It uses forced air cooling; ensure sufficient ventilation during installation.