Product Introduction
The Schneider ATV71HU55N4 is part of the Altivar 71 series, developed for industrial applications requiring more than basic speed control. It is designed to manage variable load conditions with stable torque output and efficient motor performance.
Unlike basic variable frequency drives, this model integrates advanced control algorithms and communication flexibility, making it suitable for both standalone machines and integrated automation systems. Its architecture supports long-term industrial operation with strong emphasis on reliability and process stability.
From a practical engineering perspective, it is often selected for its ability to maintain consistent performance in demanding environments while remaining flexible for system expansion.
Technical Specifications
| Parameter | Specification |
|---|
| Product Type | Variable Speed Drive |
| Model | ATV71HU55N4 |
| Series | Altivar 71 |
| Motor Power | 5.5 kW / 7.5 HP |
| Input Voltage | 380–480 V AC |
| Phase | 3 Phase |
| Line Current | 17 A (480 V) / 20.3 A (380 V) |
| Output Frequency | 0.1–599 Hz |
| Control Modes | V/F, SFVC, FVC |
| Communication | Modbus, CANopen |
| EMC Filter | Integrated |
| Protection Rating | IP20 |
| Mounting Type | Panel / Wall Mount |
| Dimensions | 295 × 187 × 175 mm |
| Weight | 5.5 kg (12.13 lb) |
Industrial Application Context
The Schneider ATV71HU55N4 Variable Speed Drive is designed for medium-power industrial motor control systems requiring stable torque regulation, flexible speed control, and reliable long-term operation. It is commonly used in:
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Industrial pumps and water circulation systems
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Conveyor and material handling lines
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HVAC fan and air handling systems
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Packaging and process machinery
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Light-to-medium industrial automation systems
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OEM machine integration platforms
This model sits in the Altivar 71 range, which is known for advanced vector control performance and robust industrial adaptability.
Engineering Strengths in Real Operation
The ATV71HU55N4 is engineered to handle dynamic load conditions while maintaining smooth motor behavior and system efficiency.
Key advantages
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5.5 kW (7.5 HP) motor capacity for three-phase 380–480 V systems
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Sensorless flux vector control (SFVC) for stable low-speed torque performance
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Wide output frequency range (0.1–599 Hz) for flexible process control
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Integrated EMC filter to reduce electromagnetic interference
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High overload capability (up to 220% for short duration)
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Support for asynchronous and synchronous motors
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Modbus and CANopen communication support for automation integration
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Expandable option cards for fieldbus and encoder feedback
In industrial environments, it is valued for its balance of control precision and installation flexibility, especially in systems with variable load behavior.
Technical FAQs
1. What motor power does this drive support?
It supports 5.5 kW (7.5 HP) three-phase motors at 380–480 V.
2. Does it support vector control?
Yes, it supports sensorless and closed-loop flux vector control modes.
3. What is the output frequency range?
It operates from 0.1 Hz to 599 Hz.
4. Does it include EMC filtering?
Yes, an integrated EMC filter is included.
5. Can it handle high starting torque?
Yes, it supports up to 220% torque for short durations under transient load.
6. What communication protocols are supported?
It supports Modbus and CANopen, with optional expansion cards.
7. Is it suitable for OEM machines?
Yes, it is widely used in OEM and machine-level automation systems.
8. Can it control synchronous motors?
Yes, it supports both synchronous and asynchronous motor types.
9. How is it configured?
Through a graphical terminal interface with diagnostic functions.
10. What makes it reliable in industrial use?
Its vector control system, protection functions, and modular expansion capability improve stability and maintainability.
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