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- ATS48C32Q
- Soft Starter
- France
- 380 x 320 x 265 mm
- 18.2 kg
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Product Overview
The Schneider ATS48C32Q Soft Starter is an industrial motor-control device from the Altistart 48 family. It is designed to provide controlled starting and stopping for three-phase asynchronous motors used in industrial machinery, process equipment, pumping systems, ventilation systems, compressors, conveyors, mixers, and other motor-driven applications.
During direct-on-line starting, an asynchronous motor can draw a substantially higher current than during normal operation while simultaneously producing a sudden increase in torque. For machines with significant inertia or sensitive mechanical transmission systems, this can create unnecessary stress on shafts, couplings, belts, gearboxes, pumps, and other components.
The ATS48C32Q addresses this requirement by providing a controlled motor-starting sequence. Instead of allowing the motor to transition abruptly from standstill to full operating conditions, the soft starter manages the acceleration process according to the configured operating parameters.
The ATS48C32Q can also be incorporated into an industrial automation architecture involving PLCs, HMIs, DCS systems, motor-control equipment, and communication networks.
The specified physical dimensions of this model are 380 × 320 × 265 mm, with a weight of 18.2 kg.
Product Identification
| Parameter | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Product Family | Altistart 48 |
| Model | ATS48C32Q |
| Product Type | Soft Starter |
| Motor Application | Three-Phase Asynchronous Motor |
| Main Function | Controlled Motor Starting and Stopping |
| Communication | Modbus |
| Communication Interface | RS-485 |
| Installation Orientation | Vertical |
| Dimensions | 380 × 320 × 265 mm |
| Weight | 18.2 kg |
| Cooling | Forced Air |
| Typical Applications | Pumps, Fans, Compressors, Conveyors, Mixers |
| Automation Integration | PLC / HMI / DCS |
Technical Specifications
| Technical Item | ATS48C32Q |
|---|---|
| Manufacturer | Schneider Electric |
| Series | Altistart 48 |
| Model | ATS48C32Q |
| Product Category | Industrial Soft Starter |
| Motor Type | Three-Phase Asynchronous Motor |
| Primary Function | Controlled Acceleration and Deceleration |
| Communication | Modbus |
| Communication Interface | RS-485 |
| Mounting Orientation | Vertical |
| Height | 380 mm |
| Width | 320 mm |
| Depth | 265 mm |
| Weight | 18.2 kg |
| Cooling Method | Forced Air |
| Typical Load Types | Pumps, Fans, Compressors, Conveyors, Mixers |
| Control Integration | PLC / HMI / DCS |
The final selection and configuration should always be evaluated against the actual motor nameplate, application duty, starting requirements, mechanical load, operating environment, and control architecture.
ATS48C32Q Functional Overview
The ATS48C32Q is installed as part of the motor power-control circuit.
A typical arrangement is:
Three-Phase AC Supply
↓
Disconnect and Protection
↓
ATS48C32Q Soft Starter
↓
Three-Phase Motor
↓
Mechanical Load
The soft starter controls the motor during the starting sequence and can provide a controlled stopping sequence where required.
The general operating cycle is:
Start Command
↓
Controlled Acceleration
↓
Normal Motor Operation
↓
Stop Command
↓
Controlled Deceleration
This arrangement can help provide a smoother transition between stopped and running states.
Working Principle
A direct-on-line motor starter connects the motor directly to the supply. Depending on the motor and load, this can result in high starting current and a sudden torque response.
The ATS48C32Q instead controls the electrical conditions during acceleration.
During a typical startup:
- The control system issues a start command.
- The soft starter initiates the starting sequence.
- Motor acceleration is controlled.
- The motor approaches normal operating conditions.
- The system continues normal operation.
During stopping, the configured stop sequence determines how the motor transitions toward standstill.
The actual settings must be selected according to the motor and connected machine rather than copied from an unrelated application.
Key Functions
Controlled Motor Starting
Controlled acceleration is the primary function of a soft starter.
It can help reduce mechanical shock in systems containing:
- Gearboxes
- Couplings
- Belts
- Chains
- Shafts
- Pumps
- Fans
- Conveyors
For equipment with significant inertia, a properly configured starting profile can provide a more predictable acceleration process.
Controlled Stopping
Some applications require a controlled stop rather than an immediate removal of motor operation.
Potential applications include:
- Pumps
- Conveyors
- Fans
- Blowers
- High-inertia machines
- Process equipment
The appropriate stopping method depends on the mechanical system and process requirements.
Motor Monitoring
The Altistart 48 platform incorporates monitoring and protection functions designed to identify abnormal operating conditions.
Depending on the operating situation, technicians may need to investigate:
- Excessive current
- Motor thermal loading
- Starter temperature
- Phase-related abnormalities
- Abnormal acceleration
- Repeated overload conditions
Protection parameters should be selected according to the actual motor and operating duty.
Industrial Applications
Pumping Systems
The ATS48C32Q can be considered for industrial pump systems where controlled starting or stopping is desirable.
Typical applications may include:
- Process pumps
- Cooling-water pumps
- Water circulation systems
- Transfer pumps
- Industrial water systems
- Fluid-handling equipment
Controlled acceleration can help reduce sudden mechanical and process disturbances.
Fans and Blowers
Large fans and blowers often have considerable rotating inertia.
Potential applications include:
- Factory ventilation
- Exhaust systems
- Cooling systems
- Dust extraction
- Air-handling systems
- Process ventilation
The soft starter can provide controlled acceleration for properly matched motor and fan systems.
Compressor Equipment
Compressors may impose substantial starting requirements on the motor.
Before commissioning, consider:
- Motor rated current
- Compressor load
- Starting duration
- Starting frequency
- Operating cycle
- Ambient temperature
- Mechanical resistance
Conveyor Systems
Conveyors can experience significant mechanical stress during abrupt motor starting.
Controlled acceleration can help reduce stress on:
- Conveyor belts
- Drive shafts
- Gearboxes
- Couplings
- Mechanical transmission systems
It can also provide smoother movement of conveyed products.
Mixers and Agitators
Mixers may have considerable starting resistance, especially when processing dense or viscous materials.
A properly configured soft starter can provide a more gradual transition from standstill to operating conditions.
Industrial Machinery
Additional applications can include:
- Blowers
- Material-handling equipment
- Rotating machinery
- Production machinery
- Process equipment
- Mechanical drive systems
Application suitability should be evaluated according to the actual motor and load.
Installation Guide
Step 1 – Confirm Product Identification
Before installation, verify the equipment identification:
Schneider ATS48C32Q
Inspect the unit for visible damage.
Look for:
- Cracked housing
- Damaged terminals
- Bent mounting points
- Loose components
- Moisture
- Excessive dust
- Discoloration
- Signs of overheating
Do not install visibly damaged equipment until it has been properly evaluated.
Step 2 – Verify Motor Information
Obtain the actual motor nameplate information before configuring the soft starter.
Record:
- Rated voltage
- Rated current
- Rated frequency
- Rated power
- Connection type
- Rated speed
- Duty
- Starting characteristics
The ATS48C32Q should be matched to the motor and application rather than selected only from physical dimensions.
Step 3 – Plan the Control Cabinet
The specified dimensions of the ATS48C32Q are:
380 × 320 × 265 mm
The enclosure must provide additional room around the unit.
Consider space for:
- Power cables
- Control cables
- Communication cables
- Protective components
- Cable bending
- Ventilation
- Inspection
- Maintenance
Avoid placing major heat-producing devices directly against the soft starter.
Step 4 – Mount the Soft Starter
The supplied product weight is 18.2 kg.
The panel structure and mounting hardware must therefore provide sufficient mechanical support.
Check:
- Panel rigidity
- Mounting hardware
- Vertical orientation
- Mechanical stability
- Vibration
- Cable support
- Maintenance access
Step 5 – Prepare the Installation Environment
The cabinet should protect the ATS48C32Q from unsuitable industrial conditions.
Avoid direct exposure to:
- Water
- Condensation
- Conductive dust
- Excessive dust
- Oil mist
- Corrosive substances
- Excessive vibration
- Excessive heat
The cabinet should provide an appropriate cooling and ventilation arrangement.
Step 6 – Isolate Electrical Power
Before wiring the soft starter:
- Disconnect the incoming power.
- Apply lockout/tagout procedures.
- Verify the absence of hazardous voltage.
- Isolate the motor.
- Check for stored energy.
- Confirm the work area is safe.
- Use suitable electrical PPE.
Never perform power wiring on energized equipment.
Step 7 – Connect the Power Circuit
Connect the incoming three-phase supply and motor circuit according to the approved electrical design.
Verify:
- Phase connections
- Cable sizing
- Circuit protection
- Grounding
- Terminal connections
- Cable insulation
- Cable routing
Inspect the complete power circuit before energization.
Step 8 – Connect Control Wiring
Depending on the application, control wiring may include:
- Start
- Stop
- Reset
- Run indication
- Fault indication
- External interlocks
- PLC commands
- Emergency-stop logic
Control wiring should be organized appropriately and routed according to the electrical design.
Step 9 – Connect the Communication Network
The ATS48C32Q can be incorporated into a suitable industrial communication architecture.
A representative arrangement is:
PLC
↓
RS-485 / Modbus
↓
ATS48C32Q
↓
Motor
Check:
- Communication wiring
- Device address
- Communication parameters
- PLC configuration
- Network topology
- Control permissions
Step 10 – Configure Motor Parameters
Enter the actual motor information into the soft starter.
Configuration areas may include:
- Motor rated current
- Acceleration time
- Deceleration time
- Current limitation
- Protection settings
- Stop mode
- Command source
Do not copy settings from another machine without verifying the motor and load.
Step 11 – Inspect the Mechanical Load
Before the first motor start, inspect the complete machine.
Check:
- Motor shaft
- Coupling
- Bearings
- Gearbox
- Belts
- Pump
- Fan
- Conveyor
- Mechanical guards
Confirm that the load can move without abnormal resistance.
Commissioning Procedure
Pre-Commissioning Checklist
Before energizing the system:
- Verify the ATS48C32Q model.
- Confirm motor nameplate information.
- Check power wiring.
- Check control wiring.
- Verify grounding.
- Check protective equipment.
- Confirm cabinet ventilation.
- Verify starter parameters.
- Test interlocks.
- Verify emergency-stop functions.
Initial Energization
After completing the inspection:
- Energize the control system.
- Observe the ATS48C32Q status.
- Check for fault indications.
- Verify control inputs.
- Check communication status.
- Confirm the intended operating mode.
Where possible, perform the initial test under controlled mechanical conditions.
First Motor Start
Start the motor while monitoring:
- Starting current
- Acceleration time
- Motor sound
- Vibration
- Starter status
- Motor rotation
- Mechanical movement
- Process behavior
Stop the test if abnormal electrical, mechanical, or process conditions occur.
Troubleshooting Guide
Fault 1 – ATS48C32Q Does Not Power Up
Possible Causes
- Incoming supply unavailable
- Circuit protection open
- Incorrect wiring
- Control circuit problem
- Internal equipment fault
Diagnostic Steps
Check:
- Incoming voltage
- Protective devices
- Power connections
- Control circuit
- Starter status
Fault 2 – Motor Does Not Start
Possible Causes
- Start command missing
- Incorrect control wiring
- Active interlock
- Incorrect command source
- Incorrect configuration
- Motor problem
- Mechanical obstruction
Diagnostic Procedure
Trace the start command from the PLC or control device to the ATS48C32Q.
Then verify the motor power circuit and mechanical load.
Fault 3 – Motor Accelerates Too Slowly
Possible Causes
- Acceleration time too long
- Current limitation too restrictive
- Incorrect motor data
- Excessive mechanical load
- Mechanical resistance
Corrective Action
Verify the motor information and acceleration settings.
Then inspect the mechanical load for abnormal resistance.
Fault 4 – Excessive Starting Current
Possible Causes
- Acceleration time too short
- Current limitation incorrectly configured
- Heavy mechanical load
- Incorrect motor parameters
- Motor condition
Compare the configured motor values against the actual motor nameplate.
Fault 5 – Starter Trips During Acceleration
Possible Causes
- Motor overload
- Phase problem
- Incorrect wiring
- Incorrect configuration
- Excessive load
- Mechanical obstruction
Do not repeatedly reset the soft starter without determining the underlying cause.
Fault 6 – ATS48C32Q Overheats
Possible Causes
- Insufficient cabinet ventilation
- Restricted airflow
- High ambient temperature
- Excessive starting frequency
- Motor overload
- Dust contamination
- Cooling-system problem
Corrective Action
Inspect the complete thermal environment.
Check the airflow path, cabinet ventilation, and nearby heat-producing equipment.
Fault 7 – Motor Vibrates During Startup
Possible Causes
- Shaft misalignment
- Coupling wear
- Bearing deterioration
- Mechanical imbalance
- Incorrect acceleration profile
- Mechanical resonance
Investigate both the electrical system and the mechanical machine.
Fault 8 – Motor Stops Abruptly
Possible Causes
- Incorrect stop configuration
- External stop command
- Incorrect deceleration setting
- PLC logic problem
- High-inertia load
Review the complete stopping sequence.
Fault 9 – Motor Does Not Stop
Possible Causes
- Stop command missing
- Control wiring problem
- PLC logic problem
- External interlock
- Incorrect configuration
Trace the stop command through the complete control architecture.
Fault 10 – Modbus Communication Failure
Possible Causes
- Incorrect device address
- Incorrect communication parameters
- RS-485 wiring problem
- PLC configuration error
- Network topology issue
- Communication interface problem
Diagnostic Sequence
First inspect the physical communication network.
Then verify:
- Device address
- Communication speed
- Serial settings
- PLC configuration
- Network connections
Fault 11 – Repeated Overload Faults
Possible Causes
- Excessive mechanical load
- Bearing deterioration
- Mechanical obstruction
- Incorrect motor parameters
- Excessive starting frequency
- Incorrect protection settings
- Process overload
Repeated overload faults should be investigated as a complete motor-control and mechanical system.
Fault Diagnosis Flow
Use the following sequence to isolate faults:
Incoming Supply
↓
Circuit Protection
↓
ATS48C32Q Status
↓
Start / Stop Commands
↓
Communication
↓
Power Circuit
↓
Motor
↓
Mechanical Load
↓
Configuration
↓
Restart Test
This approach helps distinguish between electrical, control, communication, configuration, motor, and mechanical problems.
Preventive Maintenance
Electrical Inspection
Periodically inspect:
- Power terminals
- Control terminals
- Ground connections
- Cable insulation
- Signs of overheating
- Loose connections
Cooling Inspection
Check:
- Airflow
- Cooling paths
- Cabinet ventilation
- Filters
- Dust accumulation
- Ambient temperature
Mechanical Inspection
Inspect:
- Mounting hardware
- Cable supports
- Motor alignment
- Couplings
- Bearings
- Gearboxes
- Vibration
Operating Monitoring
Monitor:
- Motor current
- Starting duration
- Operating temperature
- Fault history
- Starting frequency
- Motor vibration
- Abnormal noise
Historical operating data can help identify gradual changes in system performance.
Preventive Maintenance Table
| Maintenance Area | Recommended Action |
|---|---|
| Power Terminals | Check tightness and heating |
| Control Terminals | Inspect connection integrity |
| Grounding | Verify continuity |
| RS-485 Network | Inspect communication wiring |
| Cooling Paths | Clean and inspect |
| Cabinet Ventilation | Keep airflow unobstructed |
| Filters | Clean or replace as required |
| Motor Current | Monitor operating values |
| Fault History | Review periodically |
| Mounting Hardware | Check mechanical stability |
| Cables | Inspect insulation and routing |
| Cabinet Interior | Remove dust and contamination |
| Motor / Load | Check vibration and alignment |
Common Installation Mistakes
Incorrect Motor Parameters
Incorrect motor information can result in poor starting performance and unnecessary protection trips.
Insufficient Cabinet Space
The 380 × 320 × 265 mm dimensions describe the physical product size. Additional room must be provided for wiring, cooling, inspection, and maintenance.
Inadequate Mounting
The ATS48C32Q weighs 18.2 kg, so the mounting structure must safely support the device.
Poor Ventilation
Restricted airflow can increase thermal stress and contribute to overheating.
Loose Power Connections
Loose connections can cause heating, voltage drop, intermittent operation, and equipment damage.
Incorrect Control Wiring
A missing start signal, active interlock, or incorrect command source can prevent normal motor operation.
Communication Configuration Errors
Incorrect addressing or serial parameters can prevent PLC communication.
Ignoring Mechanical Problems
A blocked pump, overloaded conveyor, worn bearing, damaged coupling, or gearbox problem can produce symptoms that appear to be soft-starter faults.
Repeated Fault Resets
Repeatedly resetting a fault without determining the root cause can increase equipment stress and prolong troubleshooting.
PLC and Automation Integration
The ATS48C32Q can be incorporated into a larger industrial control architecture.
A representative system is:
PLC / DCS
↓
Control Commands
↓
ATS48C32Q
↓
Three-Phase Motor
↓
Machine
↓
Process
The communication interface can support exchange of available control, status, and diagnostic information between the soft starter and automation system.
Potential functions include:
- Remote start
- Remote stop
- Fault monitoring
- Motor status monitoring
- Alarm management
- Process interlocking
- Diagnostic monitoring
Supporting Components
A complete ATS48C32Q motor-control system may include:
- Circuit breakers
- Disconnect switches
- Fuses
- Contactors
- Motor protection devices
- PLC controllers
- HMIs
- Control relays
- RS-485 communication equipment
- Emergency-stop circuits
- Motor sensors
- Process sensors
All supporting components should be selected according to the actual electrical design and motor application.
Related Altistart 48 Models
| Model | Typical Application Position |
|---|---|
| ATS48C11Q | Industrial motor-control applications |
| ATS48C14Q | Larger industrial motor applications |
| ATS48C17Q | Higher-power industrial applications |
| ATS48C21Q | Higher-current motor-control applications |
| ATS48C25Q | Larger industrial motor-control applications |
| ATS48C32Q | High-power industrial motor-control applications |
The appropriate model should be selected according to actual motor current, voltage, starting duty, mechanical load, environmental conditions, and required operating performance.
Key Advantages
- Altistart 48 industrial soft-starter platform
- Controlled motor acceleration
- Controlled motor stopping
- Three-phase asynchronous motor applications
- Motor monitoring
- Motor protection functions
- Starter protection
- Modbus communication capability
- RS-485 communication
- PLC integration
- HMI integration
- DCS integration
- Suitable for pumps
- Suitable for fans
- Suitable for blowers
- Suitable for compressors
- Suitable for conveyors
- Suitable for mixers
- Forced-air cooling
- Vertical installation
- Dimensions: 380 × 320 × 265 mm
- Weight: 18.2 kg
Technical FAQs
What is the Schneider ATS48C32Q?
The Schneider ATS48C32Q is an Altistart 48 industrial soft starter designed for controlled starting and stopping of three-phase asynchronous motors.
What are the dimensions of the ATS48C32Q?
The specified dimensions are 380 × 320 × 265 mm.
What is the weight of the ATS48C32Q?
The specified weight is 18.2 kg.
What is the primary function of the ATS48C32Q?
Its primary function is to provide controlled motor acceleration and stopping while supporting motor monitoring and protection functions.
What applications can use the ATS48C32Q?
Potential applications include pumps, fans, blowers, compressors, conveyors, mixers, and other industrial motor-driven equipment.
Can the ATS48C32Q be integrated with a PLC?
Yes. The ATS48 platform supports Modbus communication through an RS-485-based industrial network, allowing suitable PLC and automation architectures to exchange available control and diagnostic information.
Why does the motor fail to start?
Possible causes include a missing start command, incorrect control wiring, active interlocks, incorrect parameters, motor problems, or mechanical obstruction.
Why does the ATS48C32Q overheat?
Possible causes include inadequate ventilation, restricted airflow, high ambient temperature, excessive starting frequency, motor overload, or contamination.
Why does the soft starter trip during acceleration?
Possible causes include excessive mechanical load, incorrect motor parameters, phase-related problems, unsuitable starting settings, wiring problems, or mechanical resistance.
What should be checked before commissioning?
Verify motor nameplate data, power wiring, protective devices, grounding, control wiring, communication settings, soft-starter parameters, cabinet ventilation, and the mechanical load.
How should repeated faults be diagnosed?
Start with the incoming supply and protection system. Then inspect the ATS48C32Q status, control signals, communication network, motor circuit, motor condition, configuration, and mechanical load. This systematic approach can prevent unnecessary replacement of a functioning soft starter.
Conclusion
The Schneider ATS48C32Q Soft Starter is an industrial motor-control solution designed to provide controlled starting and stopping for three-phase asynchronous motors. It can be particularly useful in applications where direct-on-line starting could create excessive electrical demand, mechanical shock, or process disturbances.
The specified ATS48C32Q measures 380 × 320 × 265 mm and weighs 18.2 kg. These dimensions should be considered during cabinet design, mounting, cable routing, ventilation planning, and maintenance access.
Reliable operation requires appropriate motor and soft-starter matching, accurate motor parameter configuration, correctly designed electrical protection, proper grounding, adequate cabinet cooling, and careful commissioning.
When troubleshooting, technicians should not automatically assume that a fault indication means the soft starter has failed. A structured diagnostic process should examine the incoming power, protective circuit, control signals, communication network, motor, configuration, and mechanical load.
With correct installation, commissioning, preventive maintenance, and systematic fault diagnosis, the ATS48C32Q can be effectively integrated into industrial motor-control and automation systems.