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- Schneider
- ATV950D55N4
- Variable Speed Drive
- France
- 345 x 1250 x 375 mm
- 87 kg
- Xiamen, China
- New & In Stock
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Product Overview
In large-scale industrial automation systems, efficient motor control is essential for improving operational performance, reducing energy consumption, and maintaining stable production processes. Variable speed drives provide precise regulation of motor speed, torque, and acceleration by adjusting output frequency and voltage, enabling industrial equipment to operate according to changing process demands.
The Schneider ATV950D55N4 Variable Speed Drive is a high-performance industrial AC drive designed for demanding motor control applications. It provides reliable speed regulation, advanced protection functions, and efficient power management for large industrial machines and process equipment.
As part of the Schneider Altivar Process ATV900 series, the ATV950D55N4 is designed for applications requiring strong control performance, reliable operation, and seamless integration into industrial automation systems. It is suitable for heavy-duty equipment including pumps, fans, compressors, conveyors, and large motor-driven machinery.
With dimensions of 345 × 1250 × 375 mm and a weight of 87 kg, the Schneider ATV950D55N4 Variable Speed Drive features a robust industrial enclosure design suitable for large electrical cabinets and high-power automation installations.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Schneider Electric |
| Model | ATV950D55N4 |
| Product Type | Variable Speed Drive |
| Series | Altivar Process ATV900 Series |
| Application | Industrial AC Motor Control |
| Function | Variable Frequency Speed Regulation |
| Installation Type | Cabinet Mounting |
| Control Technology | AC Drive Control |
| Dimensions | 345 × 1250 × 375 mm |
| Weight | 87 kg |
Function and Working Principle
The Schneider ATV950D55N4 Variable Speed Drive controls industrial AC motors by converting fixed-frequency electrical power into adjustable-frequency output power.
The operating process is:
AC Power Input → Rectifier Stage → DC Link → Inverter Control → Variable Motor Output
Working principle:
- Receives three-phase AC power from the industrial electrical network.
- Converts AC input into DC voltage through the rectifier circuit.
- Stabilizes and filters DC power through the intermediate circuit.
- Uses inverter switching technology to generate controlled AC output.
- Adjusts motor speed, torque, and acceleration based on system requirements.
This technology allows motors to operate efficiently under different load conditions while improving process stability and reducing unnecessary energy consumption.
Role in Industrial Automation Systems
The Schneider ATV950D55N4 is an important component in modern industrial control systems.
Main functions include:
- Variable motor speed control
- Torque management
- Energy optimization
- Motor protection
- Process automation integration
- Equipment performance improvement
Typical applications include:
- Industrial pumping systems
- Large ventilation equipment
- Compressors
- Material handling systems
- Manufacturing machinery
- Process industries
Main Features
High-Power Motor Control Performance
The ATV950D55N4 provides stable and accurate control for large industrial motors.
Advantages:
- Precise speed adjustment
- Reliable torque control
- Smooth acceleration and deceleration
- Improved process consistency
Energy Efficiency Optimization
By adjusting motor speed according to actual operating requirements, the drive helps reduce unnecessary energy consumption.
Benefits:
- Lower energy costs
- Improved motor efficiency
- Reduced mechanical stress
- Optimized production operation
Advanced Protection and Monitoring
The drive includes multiple protection functions designed for industrial environments.
Protection features include:
- Overcurrent protection
- Overvoltage protection
- Motor overload monitoring
- Thermal protection
- Fault diagnostics
These functions help improve system safety and minimize unexpected equipment downtime.
Heavy-Duty Industrial Structure
With dimensions of 345 × 1250 × 375 mm and a weight of 87 kg, the ATV950D55N4 is designed for high-power industrial installations.
Advantages:
- Strong mechanical construction
- Suitable for large control cabinets
- Reliable continuous operation
- Designed for demanding industrial environments
Industrial Applications
Pumping System Applications
Large industrial pumps require precise speed control for efficient operation.
Applications include:
- Water treatment facilities
- Chemical processing systems
- Cooling circulation systems
- Industrial fluid transport
The ATV950D55N4 helps maintain stable flow control while improving energy efficiency.
Fan and Ventilation Equipment
The drive provides efficient control for large ventilation systems.
Applications include:
- Industrial HVAC systems
- Factory ventilation
- Air processing equipment
- Environmental control systems
Compressor Control Systems
Industrial compressors require stable speed regulation.
Applications include:
- Manufacturing plants
- Process industries
- Gas handling systems
- Production facilities
Conveyor and Heavy Machinery
The ATV950D55N4 supports accurate control of large mechanical systems.
Applications include:
- Mining equipment
- Material handling systems
- Production lines
- Automated machinery
Installation Guide
Step 1: Confirm System Requirements
Before installation, verify:
- Correct drive model
- Motor power rating
- Input voltage requirements
- Cabinet installation space
- Cooling requirements
Ensure the drive matches the motor and application specifications.
Step 2: Prepare Installation Environment
Check:
- Mounting structure
- Ventilation space
- Ambient temperature
- Cable routing conditions
Proper installation helps maintain long-term reliability.
Step 3: Connect Power and Motor Wiring
Connect:
- Main power input
- Motor output terminals
- Grounding connection
- Control wiring
Ensure all electrical connections are secure and correctly installed.
Step 4: Configure Drive Parameters
Set required parameters:
- Motor voltage
- Motor current
- Motor frequency
- Acceleration time
- Deceleration time
- Control mode
Correct parameter configuration ensures efficient motor operation.
Step 5: Commission the System
After installation:
- Power on the drive
- Check display information
- Test motor rotation
- Verify speed regulation
- Confirm protection functions
Common Failure Symptoms
| Fault Symptom | Possible Cause |
|---|---|
| Drive fails to start | Power supply or control issue |
| Motor speed fluctuation | Incorrect parameters |
| Overcurrent alarm | Excessive mechanical load |
| Overtemperature fault | Cooling problem |
| Communication error | Network configuration issue |
Troubleshooting Guide
Check Input Power Conditions
Inspect:
- Supply voltage
- Power connections
- Protective devices
Incorrect power conditions may cause startup problems.
Verify Motor Configuration
Check:
- Motor nameplate information
- Drive parameter settings
- Control mode selection
Incorrect settings can affect motor performance.
Inspect Cooling System
Check:
- Cooling fans
- Airflow channels
- Cabinet ventilation
Poor cooling may cause thermal protection alarms.
Check Communication Functions
Verify:
- Communication cables
- Network parameters
- PLC control signals
Communication faults may interrupt automated operation.
Maintenance Recommendations
To maintain reliable operation of the Schneider ATV950D55N4 Variable Speed Drive:
- Clean dust from electrical cabinets
- Inspect cooling components regularly
- Tighten electrical connections
- Monitor operating temperature
- Check alarm records
- Perform preventive maintenance
Regular maintenance improves equipment reliability and extends service life.
Compatible Automation Components
| Component | Function |
|---|---|
| Variable Speed Drive | Controls motor speed and torque |
| PLC Controller | Provides automation logic |
| HMI System | Operator monitoring and control |
| AC Motor | Converts electrical energy into mechanical motion |
| Industrial Communication Network | Enables system integration |
Key Advantages
- High-performance industrial motor control
- Reliable speed and torque regulation
- Energy-saving operation
- Advanced protection functions
- Heavy-duty industrial design
- Suitable for large automation systems
Technical FAQs
What is Schneider ATV950D55N4 used for?
The Schneider ATV950D55N4 Variable Speed Drive is used for controlling large industrial AC motors in automation and process applications.
What is the main function of this drive?
It regulates motor speed, torque, and energy consumption by adjusting output frequency and voltage.
Where is it commonly installed?
It is typically installed in large industrial control cabinets and automation systems.
What are the dimensions?
The dimensions are 345 × 1250 × 375 mm.
What is the weight?
The weight is 87 kg.
Why are high-power variable speed drives important?
High-power variable speed drives improve motor efficiency, provide accurate process control, reduce energy waste, and support reliable industrial operation.
Conclusion
The Schneider ATV950D55N4 Variable Speed Drive is a powerful industrial motor control solution designed for heavy-duty automation and process applications.
With high-performance speed regulation, efficient power management, and reliable protection functions, it helps industries optimize motor operation, reduce energy consumption, and maintain stable production processes.
For automation engineers, system integrators, and maintenance professionals, the ATV950D55N4 provides a dependable solution for large motor control applications and continuous industrial automation operation.