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- ATS480C79Y
- Soft Starter
- France
- 890 x 770 x 329 mm
- 115 kg
- Xiamen, China
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Product Overview
The Schneider ATS480C79Y Soft Starter is a heavy-duty industrial motor control device designed for demanding applications requiring controlled acceleration and deceleration of large three-phase AC induction motors. By managing the voltage applied to the motor during startup, the soft starter helps reduce inrush current, mechanical shock, and stress on electrical distribution equipment.
Large motors can generate substantial starting current when connected directly to the power supply. This sudden demand can create voltage disturbances and place significant stress on mechanical components such as shafts, couplings, gearboxes, belts, pumps, and compressors. The ATS480C79Y provides a controlled starting profile that allows the motor to accelerate progressively toward normal operating speed.
The soft starter can also provide controlled stopping behavior. This is particularly useful in applications where sudden motor shutdown may cause hydraulic shock, mechanical impact, material movement, or process instability.
The supplied product information identifies the Schneider ATS480C79Y Soft Starter with dimensions of 890 × 770 × 329 mm and a weight of 115 kg.
Product Information
- Manufacturer: Schneider Electric
- Model: ATS480C79Y
- Product Type: Soft Starter
- Dimensions: 890 × 770 × 329 mm
- Weight: 115 kg
- Application: Heavy-Duty Industrial Motor Control
- Motor Type: Three-Phase AC Induction Motor
- Starting Method: Controlled Soft Start
- Stopping Method: Controlled Soft Stop
- Installation: Industrial Control Cabinet / Motor Control Center
- Primary Function: Controlled Motor Acceleration and Deceleration
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Model | ATS480C79Y |
| Product Type | Soft Starter |
| Dimensions | 890 × 770 × 329 mm |
| Weight | 115 kg |
| Motor Type | Three-Phase AC Induction Motor |
| Starting Function | Soft Start |
| Stopping Function | Soft Stop |
| Installation | Industrial Control Cabinet |
| Application | Heavy-Duty Motor Control |
| Typical Loads | Pumps, Compressors, Fans, Conveyors, Crushers |
The dimensions and weight listed above are based on the product information supplied for this article. Electrical ratings, motor compatibility, protection requirements, and installation details should be verified against the actual system design before commissioning.
Operating Principle
The ATS480C79Y uses controlled semiconductor switching to manage the voltage supplied to the motor during acceleration and deceleration.
A simplified system arrangement is:
Three-Phase Power Supply
↓
ATS480C79Y Soft Starter
↓
Three-Phase Motor
↓
Mechanical Load
↓
Normal Operating Condition
During startup, the soft starter progressively controls the motor voltage instead of applying full supply voltage immediately.
This can reduce:
- Starting current
- Electrical disturbances
- Torque shock
- Mechanical stress
- Drive-train wear
During controlled stopping, the motor voltage is reduced according to the configured stopping profile, allowing the motor to decelerate more smoothly.
Why Use a Soft Starter?
Reduced Electrical Stress
Large induction motors can draw considerably more current during startup than during normal operation. A controlled starting sequence can reduce the impact of this current demand on the electrical distribution system.
Reduced Mechanical Shock
Sudden torque can stress:
- Shafts
- Couplings
- Gearboxes
- Bearings
- Belts
- Chains
- Pump assemblies
Controlled acceleration helps reduce these mechanical impacts.
Improved Process Stability
Applications involving fluid movement, bulk materials, or rotating machinery can benefit from a predictable acceleration profile.
Reduced Maintenance
Reducing mechanical shock can help reduce wear on connected equipment and may contribute to longer maintenance intervals.
Typical Industrial Applications
The ATS480C79Y can be used in large industrial motor applications such as:
Water and Wastewater
- Water pumps
- Wastewater pumps
- Treatment plant equipment
- Water distribution systems
Mining
- Conveyor systems
- Crushers
- Large ventilation equipment
- Material handling machinery
Oil and Gas
- Process pumps
- Compressors
- Cooling systems
- Large fans
Chemical Processing
- Process pumps
- Mixers
- Blowers
- Large rotating machinery
Cement and Construction Materials
- Crushers
- Conveyors
- Mills
- Fans
- Material handling equipment
Manufacturing
- Large compressors
- Industrial fans
- Production conveyors
- Process machinery
Installation Guide
1. Verify Product Identification
Before installation, confirm the equipment identification:
Schneider ATS480C79Y
Check the product for:
- Physical damage
- Damaged terminals
- Cracked components
- Loose hardware
- Signs of moisture
- Contamination
Do not install damaged equipment.
2. Verify Motor Compatibility
Before connecting the soft starter, collect the motor information:
- Rated voltage
- Rated current
- Rated frequency
- Motor power
- Connection type
- Starting characteristics
- Load characteristics
The soft starter must be correctly matched to the motor and application.
3. Prepare the Control Cabinet
The supplied dimensions are:
890 × 770 × 329 mm
The installation enclosure must therefore provide sufficient physical space for:
- The soft starter
- Power cables
- Control wiring
- Protective devices
- Ventilation
- Maintenance access
Because the supplied weight is 115 kg, the cabinet and mounting structure must be capable of safely supporting the equipment.
Suitable lifting equipment may be required during installation.
4. Installation Environment
The installation area should be clean, dry, and properly ventilated.
Avoid locations with excessive:
- Dust
- Moisture
- Condensation
- Oil mist
- Corrosive gases
- Vibration
- Ambient heat
Adequate ventilation is particularly important for large soft starters operating under heavy load.
5. Electrical Safety
Before wiring:
- Disconnect all incoming power.
- Apply lockout/tagout procedures.
- Verify absence of voltage.
- Isolate the motor.
- Confirm that stored electrical energy has been safely discharged.
- Use appropriate electrical PPE.
Only qualified personnel should perform electrical installation and commissioning.
6. Mounting
Secure the ATS480C79Y using a suitable industrial mounting structure.
Check:
- Mounting strength
- Mechanical stability
- Correct orientation
- Ventilation clearance
- Cable access
- Maintenance clearance
Due to the 115 kg product weight, use suitable lifting and handling procedures.
7. Power Wiring
Connect the three-phase incoming supply and motor circuit according to the system design.
Before energizing, verify:
- Correct phase connections
- Cable sizing
- Terminal tightness
- Protective earth
- Insulation
- Short-circuit protection
- Cable routing
Do not energize the system until the power circuit has been fully inspected.
8. Control Wiring
The control system may include:
- Start command
- Stop command
- Reset
- Fault indication
- Status feedback
- External interlocks
- PLC commands
- Emergency-stop circuits
Control wiring should be properly separated from high-current power wiring where practical.
9. Parameter Configuration
Configure the soft starter according to the motor and mechanical load.
Potentially relevant settings include:
- Motor rated current
- Starting voltage
- Acceleration time
- Deceleration time
- Current limitation
- Protection parameters
- Stop mode
Avoid using generic settings without evaluating the actual motor and driven equipment.
10. Mechanical Inspection
Before the first start, inspect the driven machine.
Check:
- Shaft alignment
- Coupling
- Bearings
- Gearbox
- Belts
- Pump
- Conveyor
- Fan
- Mechanical guards
Make sure the equipment is free of mechanical obstruction.
Commissioning Procedure
A controlled commissioning sequence is recommended.
Initial Inspection
- Confirm power wiring.
- Confirm control wiring.
- Verify grounding.
- Check protective devices.
- Verify motor parameters.
- Inspect mechanical connections.
- Confirm cabinet ventilation.
Initial Energization
- Energize the system.
- Observe the soft starter status.
- Confirm there are no abnormal alarms.
- Verify control signals.
Motor Start
- Issue the start command.
- Observe acceleration.
- Monitor motor current.
- Listen for unusual mechanical noise.
- Check vibration.
- Confirm the motor reaches normal operating speed.
Motor Stop
Test the selected stopping profile and observe:
- Deceleration
- Motor current
- Mechanical vibration
- Process response
- Fault indications
Troubleshooting Guide
Problem 1 – ATS480C79Y Does Not Power On
Possible causes include:
- Missing input voltage
- Open circuit protection
- Incorrect wiring
- Control power problem
- Internal fault
Diagnostic Procedure
- Verify incoming voltage.
- Inspect circuit protection.
- Check power connections.
- Verify control power.
- Review the soft starter status.
Problem 2 – Motor Does Not Start
Possible causes:
- Missing start command
- Incorrect control wiring
- Active interlock
- Incorrect motor configuration
- Motor fault
- Mechanical obstruction
Check the complete start-command path before replacing the soft starter.
Problem 3 – Motor Starts but Accelerates Slowly
Possible causes:
- Acceleration time too long
- Starting voltage too low
- Current limitation too restrictive
- Excessive mechanical load
- Mechanical resistance
Check motor current and load conditions during acceleration.
Problem 4 – Starting Current Is Excessive
Possible causes:
- Incorrect current limit
- Short acceleration time
- Heavy load
- Incorrect motor parameters
- Motor problem
Verify the motor data and starting configuration.
Problem 5 – Soft Starter Trips During Acceleration
Possible causes:
- Motor overload
- Phase loss
- Short circuit
- Incorrect configuration
- Excessive mechanical load
- Mechanical obstruction
Do not repeatedly reset the fault without identifying the cause.
Problem 6 – Soft Starter Overheats
Possible causes:
- Insufficient ventilation
- Blocked airflow
- High ambient temperature
- Excessive operating cycles
- Overload
- Cooling system failure
- Dust accumulation
Inspect the complete cooling arrangement rather than only the soft starter.
Problem 7 – Motor Vibrates During Startup
Possible causes:
- Misalignment
- Loose coupling
- Bearing damage
- Unbalanced load
- Incorrect acceleration profile
- Mechanical resonance
A vibration problem should be investigated mechanically as well as electrically.
Problem 8 – Motor Stops Abruptly
Possible causes:
- Incorrect stopping configuration
- External stop command
- Control logic problem
- Inappropriate deceleration settings
- Mechanical load characteristics
Review the stopping command and configured stop profile.
Problem 9 – Motor Does Not Stop
Possible causes:
- Incorrect stop command
- PLC logic problem
- Control wiring issue
- External interlock
- Incorrect control configuration
Trace the complete control signal path.
Problem 10 – Repeated Overload Faults
Repeated overloads may indicate:
- Excessive mechanical load
- Mechanical obstruction
- Bearing problems
- Incorrect motor parameters
- Incorrect soft-starter settings
- Excessive starting frequency
- Abnormal process conditions
Repeated resetting should be avoided until the underlying problem is identified.
Fault Diagnosis Flow
A structured diagnostic process can be organized as follows:
Incoming Power
↓
Protection Devices
↓
ATS480C79Y Status
↓
Control Signals
↓
Power Connections
↓
Motor
↓
Mechanical Load
↓
Operating Parameters
↓
Controlled Restart
This sequence helps technicians separate electrical, configuration, motor, and mechanical problems.
Preventive Maintenance
Regular maintenance should cover the complete motor-control system.
Electrical Inspection
Check:
- Power terminals
- Control terminals
- Grounding
- Cable insulation
- Signs of overheating
- Loose connections
Cooling Inspection
Check:
- Cooling airflow
- Fans
- Air passages
- Cabinet ventilation
- Filters
- Dust accumulation
Mechanical Inspection
Check:
- Mounting hardware
- Cabinet structure
- Cable supports
- Vibration
- Motor mounting
Operational Inspection
Monitor:
- Motor current
- Starting time
- Operating temperature
- Fault history
- Number of starts
- Mechanical vibration
- Abnormal noise
Preventive Maintenance Schedule
| Maintenance Item | Recommended Action |
|---|---|
| Power Terminals | Inspect for looseness and heating |
| Control Wiring | Check connection integrity |
| Cooling Fans | Inspect and clean |
| Ventilation Paths | Keep unobstructed |
| Cabinet Filters | Clean or replace when required |
| Grounding | Verify continuity |
| Motor Current | Monitor during operation |
| Fault History | Review regularly |
| Mounting Hardware | Inspect for looseness |
| Cable Insulation | Check condition |
| Cabinet Interior | Remove dust and contamination |
| Mechanical Equipment | Inspect vibration and alignment |
Common Installation Mistakes
Insufficient Cabinet Capacity
The ATS480C79Y measures 890 × 770 × 329 mm. The cabinet must provide sufficient room for the device and associated equipment.
Inadequate Structural Support
At 115 kg, the soft starter requires a mounting structure capable of safely supporting its weight.
Poor Ventilation
Insufficient airflow can cause excessive temperature and premature equipment degradation.
Loose Power Connections
Loose terminals can produce localized heating and intermittent faults.
Incorrect Motor Data
Incorrect motor parameters may cause poor acceleration or unnecessary protection trips.
Poor Cable Routing
Power and control wiring should be routed appropriately to reduce electrical interference.
Inadequate Grounding
Protective grounding must be properly implemented as part of the overall installation.
System Integration
The ATS480C79Y can serve as the motor-control layer within an industrial automation system.
A typical architecture is:
PLC / DCS / Control System
↓
Start / Stop / Interlock Signals
↓
ATS480C79Y
↓
Large Three-Phase Motor
↓
Pump / Compressor / Conveyor / Fan
↓
Process Feedback
The control system can coordinate motor operation with other process equipment while the soft starter manages the motor’s acceleration and stopping behavior.
Recommended Supporting Equipment
A complete motor-control installation may include:
- Circuit breakers
- Disconnect switches
- Fuses
- Contactors
- Motor protection devices
- PLC controllers
- HMI systems
- Control relays
- Emergency-stop circuits
- Current monitoring equipment
- Motor temperature sensors
- Process feedback devices
The exact configuration depends on the motor, electrical system, application, and applicable safety requirements.
Key Advantages
- Heavy-duty industrial motor-control solution
- Controlled motor acceleration
- Controlled deceleration
- Reduced starting current
- Reduced mechanical shock
- Improved process stability
- Reduced stress on mechanical drive components
- Suitable for large motor applications
- Industrial control cabinet installation
- Dimensions: 890 × 770 × 329 mm
- Weight: 115 kg
Technical FAQs
What is the Schneider ATS480C79Y?
The ATS480C79Y is a heavy-duty soft starter designed to control the acceleration and deceleration of large three-phase AC induction motors.
What are the dimensions of the ATS480C79Y?
The supplied dimensions are 890 × 770 × 329 mm.
What is the weight?
The supplied weight is 115 kg.
Why is a soft starter used for large motors?
Large motors can generate high starting current and significant mechanical torque when started directly. A soft starter provides a controlled starting profile that can reduce these stresses.
What equipment can benefit from soft starting?
Pumps, compressors, conveyors, fans, crushers, mixers, and other large rotating machines can benefit from controlled motor acceleration.
Why does the motor fail to accelerate?
Possible causes include incorrect motor parameters, insufficient starting voltage, excessive mechanical load, restrictive current settings, or mechanical obstruction.
Why does the ATS480C79Y overheat?
Possible causes include insufficient cabinet ventilation, blocked cooling paths, high ambient temperature, excessive operating cycles, overload, or cooling-system problems.
Why does the soft starter repeatedly trip?
Repeated trips can result from motor overload, phase problems, incorrect configuration, mechanical problems, or abnormal operating conditions.
What should be checked after installation?
Verify power wiring, control wiring, grounding, motor parameters, protective devices, cabinet ventilation, mechanical connections, and startup behavior.
Is preventive maintenance important?
Yes. Regular inspection of electrical connections, cooling systems, motor current, fault history, and mechanical equipment can identify developing problems before they result in unplanned downtime.
Conclusion
The Schneider ATS480C79Y Soft Starter is a large industrial motor-control solution designed for applications where reliable and controlled motor starting is essential. By managing the acceleration and deceleration process, it can reduce electrical inrush, mechanical shock, and stress on connected equipment.
The supplied dimensions are 890 × 770 × 329 mm, while the specified weight is 115 kg. These physical characteristics should be considered carefully during cabinet design, transportation, lifting, mounting, and maintenance planning.
For reliable operation, the ATS480C79Y should be configured according to the actual motor and driven load. Correct power wiring, grounding, protection, ventilation, control integration, and parameter configuration are essential during commissioning.
When troubleshooting, technicians should follow a structured process that separates power-supply issues, control faults, soft-starter conditions, motor problems, and mechanical-load problems. Combined with regular preventive maintenance, this approach can help reduce unexpected downtime and maintain stable performance in demanding industrial automation applications.