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- Schneider
- ATV312HU40N4
- Variable Speed Drive
- France
- 184 × 142 × 152 mm
- 3.1 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Schneider ATV312HU40N4 is a reliable variable speed drive (VSD) from the Altivar 312 series, designed for controlling three-phase asynchronous motors in industrial automation systems. It provides precise speed and torque control, smooth motor operation, and energy-efficient performance for applications such as pumps, fans, conveyors, packaging equipment, and general industrial machinery.
With a rated motor power of 4 kW (5 HP), this model is widely used in medium-duty industrial environments requiring stable operation, compact installation, and integrated motor protection.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Schneider Electric |
| Model | ATV312HU40N4 |
| Product Type | Variable Speed Drive (VSD) |
| Series | Altivar 312 |
| Dimensions | 184 × 142 × 152 mm |
| Weight | 3.1 kg |
| Input Voltage | 380–500 V AC, 3-Phase |
| Rated Motor Power | 4 kW (5 HP) |
| Rated Output Current | ~9.5 A |
| Apparent Power | ~9.2 kVA |
| Output Frequency | 0.1–500 Hz |
| Control Method | V/F Control, Sensorless Vector Control |
| Overload Capacity | 150% for 60 seconds |
| Communication Protocol | Modbus RTU, CANopen |
| Optional Communication | Profibus, DeviceNet, Modbus TCP |
| Protection Rating | IP20 (up to IP41 depending on installation) |
| Cooling Method | Forced air (internal fan) |
| Mounting Type | Wall / Panel Mount |
| Operating Temperature | -10°C to +50°C |
| Application | Medium-duty industrial motor control |
Function and Working Principle
The ATV312HU40N4 controls motor speed by adjusting the frequency and voltage supplied to a three-phase induction motor, enabling efficient torque regulation and stable operation.
Core Functions
- Smooth motor start and stop
- Variable speed control for process optimization
- Energy-efficient operation under variable load conditions
- Built-in motor protection (overload, overcurrent, phase loss, thermal protection)
- Integration with PLC and industrial automation systems
Working Principle
The drive converts incoming AC power into DC using a rectifier stage, then recreates variable-frequency AC output through an inverter. By adjusting voltage and frequency, it precisely controls motor speed while maintaining torque stability and reducing mechanical stress on equipment.
Role in Industrial Automation Systems
The ATV312HU40N4 improves industrial system performance by:
- Matching motor speed to real-time process demand
- Reducing energy consumption in variable-load operations
- Extending motor and mechanical equipment lifespan
- Improving process stability and control accuracy
- Supporting integration with PLC-based automation networks
It is commonly used in medium industrial systems where reliability and efficiency are essential.
Industrial Applications
Typical applications include:
- Conveyor systems
- Industrial pumps and compressors
- HVAC fans and ventilation systems
- Packaging machinery
- Material handling equipment
- Food and beverage processing lines
- General manufacturing automation systems
Installation and System Integration
For optimal performance:
- Install vertically inside a ventilated control cabinet
- Maintain adequate clearance for heat dissipation
- Connect to a three-phase 380–500 V supply
- Use shielded motor cables for EMC compliance
- Configure motor parameters before commissioning
- Ensure proper grounding and protection devices
Compatible System Components
The ATV312HU40N4 integrates with:
- Schneider Electric Modicon PLC systems
- Industrial HMI operator panels
- Three-phase induction motors
- Motor protection circuit breakers
- Contactors and relays
- Modbus RTU / CANopen communication networks
- Optional fieldbus communication modules
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| ATV312HU30N4 | VSD | 3 kW lower power version | Medium-light loads |
| ATV312HU55N4 | VSD | Higher 5.5 kW capacity | Heavier medium loads |
| ATV320U40N4C | Altivar 320 | Advanced smart control | Modern automation systems |
| ATV310HU40N4A | VSD | Compact Altivar 310 model | OEM applications |
| ATV312HD11N4 | VSD | Higher power frame | Heavy-duty systems |
Key Advantages
- Reliable 4 kW motor control
- Compact industrial design with 3.1 kg weight
- Sensorless vector control for stable torque
- Integrated Modbus RTU and CANopen communication
- Strong overload and motor protection functions
- Energy-efficient operation
- Flexible installation and easy commissioning
- Suitable for medium industrial automation systems
Technical FAQs
What is the main function of the ATV312HU40N4?
It regulates motor speed and torque by controlling output frequency and voltage for efficient industrial operation.
What motor power does it support?
It supports 4 kW (5 HP) three-phase motors.
Does it support industrial communication?
Yes, it supports Modbus RTU and CANopen, with optional fieldbus modules.
Can it be used in HVAC systems?
Yes, it is commonly used for fans, pumps, and ventilation systems.
Does it include motor protection?
Yes, it includes overload, overcurrent, phase loss, and thermal protection.
Conclusion
The Schneider ATV312HU40N4 Variable Speed Drive is a robust and efficient solution for medium-duty industrial motor control. With its 4 kW capacity, advanced control features, and integrated protection systems, it ensures stable, energy-efficient, and long-term reliable operation across a wide range of industrial automation applications.