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- Schneider
- ATV950D55N4E
- Variable Speed Drive
- France
- 345 x 1250 x 436 mm
- 89.3 kg
- Xiamen, China
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Product Overview
In modern industrial automation and process industries, high-power motor control systems require reliable speed regulation, energy optimization, and advanced protection capabilities. Variable speed drives provide precise control of AC motors by adjusting output frequency and voltage, allowing industrial equipment to operate efficiently under different load conditions.
The Schneider ATV950D55N4E Variable Speed Drive is a high-performance industrial AC drive designed for demanding automation applications. It provides accurate motor speed control, efficient power management, and comprehensive protection functions for large-scale industrial equipment.
As part of the Schneider Altivar Process ATV900 series, the ATV950D55N4E is designed for continuous industrial operation where reliability, performance, and system integration are critical. It is widely suitable for applications involving pumps, fans, compressors, conveyors, and heavy-duty machinery requiring stable motor control.
With dimensions of 345 × 1250 × 436 mm and a weight of 89.3 kg, the Schneider ATV950D55N4E Variable Speed Drive features a robust industrial structure designed for large electrical cabinets and high-power automation systems.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Schneider Electric |
| Model | ATV950D55N4E |
| 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 × 436 mm |
| Weight | 89.3 kg |
Function and Working Principle
The Schneider ATV950D55N4E Variable Speed Drive regulates industrial AC motors by converting fixed-frequency power into adjustable-frequency output power.
The operating process is:
AC Power Input → Rectifier Conversion → DC Intermediate Circuit → Inverter Switching → Adjustable Motor Output
Working principle:
- Receives three-phase AC power from the electrical system.
- Converts AC input power into DC voltage through the rectifier section.
- Filters and stabilizes the DC link voltage.
- Converts DC power into controlled AC output through high-speed switching technology.
- Adjusts motor speed, torque, and acceleration according to automation commands.
This control method enables precise motor operation, improves energy efficiency, and reduces mechanical stress on connected equipment.
Role in Industrial Automation Systems
The Schneider ATV950D55N4E is an important component in high-power industrial automation systems.
Main functions include:
- Variable motor speed control
- Torque adjustment
- Energy consumption optimization
- Motor protection
- Process control support
- Equipment performance enhancement
Typical applications include:
- Large pumping systems
- Industrial ventilation systems
- Compressors
- Conveyor systems
- Manufacturing equipment
- Process automation facilities
Main Features
High-Power Motor Control Capability
The ATV950D55N4E is designed for applications requiring stable and accurate control of large AC motors.
Advantages:
- Precise speed adjustment
- Stable torque output
- Smooth acceleration and deceleration
- Improved process consistency
Energy Optimization Performance
Variable speed operation allows motors to run according to actual production requirements.
Benefits:
- Reduced energy consumption
- Improved operating efficiency
- Lower mechanical wear
- Reduced operational costs
Comprehensive Protection Functions
The drive provides multiple protection and monitoring functions for industrial environments.
Protection features include:
- Overcurrent protection
- Overvoltage monitoring
- Motor overload protection
- Thermal protection
- Fault monitoring and diagnostics
These functions help protect the drive, motor, and connected equipment.
Heavy-Duty Industrial Construction
With dimensions of 345 × 1250 × 436 mm and a weight of 89.3 kg, the ATV950D55N4E is designed for large-scale industrial installations.
Advantages:
- Strong mechanical structure
- Suitable for high-power cabinets
- Reliable continuous operation
- Designed for demanding environments
Industrial Applications
Industrial Pump Systems
Large pumps require precise speed control to maintain stable flow and pressure.
Applications include:
- Water treatment plants
- Chemical processing systems
- Cooling circulation equipment
- Industrial fluid transportation
The ATV950D55N4E helps improve pump efficiency and maintain stable operation.
Fan and Ventilation Control
The drive provides efficient speed management for large ventilation systems.
Applications include:
- Industrial HVAC systems
- Factory ventilation
- Air handling equipment
- Environmental control systems
Compressor Applications
High-power compressors require reliable motor control.
Applications include:
- Manufacturing facilities
- Energy industries
- Process plants
- Gas handling systems
Heavy Machinery and Conveyor Systems
The ATV950D55N4E supports precise control of large mechanical equipment.
Applications include:
- Material handling systems
- Production lines
- Mining equipment
- Industrial machinery
Installation Guide
Step 1: Verify System Requirements
Before installation, confirm:
- Correct drive model
- Motor specifications
- Power supply conditions
- Cabinet dimensions
- Environmental requirements
Make sure the drive matches the intended application.
Step 2: Prepare Installation Location
Check:
- Mounting structure
- Ventilation space
- Cooling conditions
- Cable routing
A suitable environment helps maintain stable operation.
Step 3: Connect Electrical Wiring
Connect:
- Main power supply
- Motor output terminals
- Grounding system
- Control signal wiring
Ensure all electrical connections are secure.
Step 4: Configure Drive Parameters
Set important parameters:
- Motor rated voltage
- Motor current
- Motor frequency
- Acceleration time
- Deceleration time
- Control mode
Correct parameter configuration ensures optimal performance.
Step 5: Perform Commissioning
After installation:
- Power on the drive
- Check operating status
- Test motor rotation
- Verify speed control
- Confirm protection functions
Common Failure Symptoms
| Fault Symptom | Possible Cause |
|---|---|
| Drive cannot start | Power supply or control fault |
| Motor speed unstable | Incorrect parameter settings |
| Overcurrent alarm | Excessive load condition |
| Overtemperature warning | Cooling system issue |
| Communication failure | Network configuration problem |
Troubleshooting Guide
Check Power Input
Inspect:
- Input voltage level
- Circuit protection
- Power terminals
Incorrect power conditions may prevent normal startup.
Check Motor Configuration
Verify:
- Motor nameplate data
- Drive parameter settings
- Control mode
Incorrect configuration may affect motor operation.
Inspect Cooling System
Check:
- Cooling fans
- Air circulation
- Cabinet temperature
Poor cooling may cause protective shutdowns.
Verify Communication System
Check:
- Communication wiring
- Network settings
- PLC control signals
Communication faults may interrupt automated operation.
Maintenance Recommendations
To maintain reliable performance of the Schneider ATV950D55N4E Variable Speed Drive:
- Keep electrical cabinets clean
- Inspect cooling components regularly
- Check power connections
- Monitor operating temperature
- Review fault history
- Perform scheduled maintenance
Regular maintenance helps reduce downtime and improves system reliability.
Compatible Automation Components
| Component | Function |
|---|---|
| Variable Speed Drive | Controls motor speed and torque |
| PLC Controller | Provides automation logic |
| HMI System | Enables monitoring and operation |
| AC Motor | Converts electrical energy into mechanical power |
| Industrial Communication Network | Provides system integration |
Key Advantages
- High-power industrial motor control
- Precise speed and torque regulation
- Improved energy efficiency
- Advanced protection functions
- Robust industrial design
- Suitable for demanding automation environments
Technical FAQs
What is Schneider ATV950D55N4E used for?
The Schneider ATV950D55N4E Variable Speed Drive is used for controlling large industrial AC motors in automation and process applications.
What is the main function of this drive?
Its main function is to regulate motor speed, torque, and energy consumption through adjustable frequency control.
Where is it commonly installed?
It is typically installed in large industrial electrical cabinets and automation control systems.
What are the dimensions?
The dimensions are 345 × 1250 × 436 mm.
What is the weight?
The weight is 89.3 kg.
Why are high-power variable speed drives important?
High-power variable speed drives improve motor efficiency, optimize industrial processes, reduce energy waste, and support reliable long-term operation.
Conclusion
The Schneider ATV950D55N4E Variable Speed Drive is a high-performance industrial motor control solution designed for large-scale automation and process applications.
With powerful motor regulation capabilities, energy-saving operation, and reliable protection features, it helps industries improve production efficiency, reduce operating costs, and maintain stable equipment performance.
For automation engineers, system integrators, and maintenance professionals, the ATV950D55N4E provides a dependable solution for high-power motor control, industrial process optimization, and continuous automation operation.