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- ATS22D88Q
- Soft Starter
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- 295 x 145 x 207 mm
- 12 kg
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Product Overview
In industrial automation and motor-control systems, large three-phase motors often require controlled starting to reduce electrical inrush current and mechanical stress. The Schneider ATS22D88Q Soft Starter is an Altistart 22 series motor-control device designed to provide controlled acceleration and deceleration for three-phase asynchronous motors.
The ATS22D88Q is an 88 A soft starter designed for applications using a 230–440 V AC three-phase power supply. It is intended for motor applications in the approximate range of 22–45 kW, depending on the motor supply voltage and operating conditions.
Instead of connecting the motor directly to the line at full voltage, the ATS22D88Q uses torque-controlled starting to progressively accelerate the motor. This can reduce sudden mechanical loading on shafts, couplings, belts, gearboxes, pumps and other connected machinery.
The model uses a 230 V AC control circuit and includes an integrated bypass. It also supports Modbus communication through an RS-485 interface, allowing the soft starter to be integrated into PLC-based automation and motor-management systems.
The ATS22D88Q has a compact industrial design with dimensions of 295 × 145 × 207 mm and a product weight of approximately 12 kg. It is designed for vertical installation and forced-convection cooling.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Schneider Electric |
| Product Series | Altistart 22 |
| Model | ATS22D88Q |
| Product Type | Soft Starter |
| Motor Type | Three-Phase Asynchronous Motor |
| Starter Rating | 88 A |
| Rated Supply Voltage | 230–440 V AC |
| Supply Frequency | 50/60 Hz |
| Control Circuit Voltage | 230 V AC |
| Motor Power Range | 22–45 kW depending on supply voltage |
| Motor Power at 230 V | Approximately 22 kW |
| Motor Power at 400/440 V | Up to approximately 45 kW |
| Factory-Set Current | 77 A |
| Starting Method | Torque-Controlled Start |
| Starting Current Limitation | Approximately 3.5 × Motor Current |
| Utilization Category | AC-53A |
| Internal Bypass | Yes |
| Communication Protocol | Modbus |
| Communication Interface | RS-485 |
| Communication Connector | RJ45 |
| Discrete Inputs | 3 |
| Relay Outputs | 2 |
| PTC Probe Input | 750 Ω |
| Cooling Method | Forced Convection |
| Protection Rating | IP20 |
| Installation Position | Vertical ±10° |
| Dimensions | 295 × 145 × 207 mm |
| Weight | 12 kg |
| Typical Applications | Pumps, Fans, Compressors, Conveyors |
Function and Working Principle
The main function of the ATS22D88Q is to control the starting and stopping of three-phase asynchronous motors.
A direct-on-line motor starter applies the available supply voltage to the motor almost immediately. For medium- and high-power motors, this can result in a substantial starting current and sudden mechanical torque.
The ATS22D88Q provides a controlled starting process.
The basic system arrangement is:
Three-Phase AC Power
↓
ATS22D88Q Soft Starter
↓
Three-Phase Asynchronous Motor
↓
Industrial Load
During acceleration, the soft starter uses torque control to progressively increase motor operation. The starting current can be limited to approximately 3.5 times the motor current under the applicable starting configuration.
This controlled starting process can help reduce:
- Electrical inrush current
- Mechanical shock
- Shaft stress
- Coupling stress
- Belt tension
- Gearbox loading
- Pump pressure surges
- Fan vibration
- Conveyor shock
The soft starter can also provide controlled stopping when the application requires a gradual reduction in motor operation.
What Is the Schneider ATS22D88Q Used For?
The ATS22D88Q is used when a three-phase motor requires controlled acceleration and deceleration but does not necessarily require continuous variable-speed operation.
It is particularly suitable for fixed-speed motor applications where direct starting could create excessive electrical or mechanical stress.
Typical applications include:
- Industrial water pumps
- Centrifugal pumps
- Process pumps
- Industrial fans
- Blowers
- HVAC systems
- Screw compressors
- Conveyor systems
- Material handling equipment
- Cooling systems
- Manufacturing machinery
- Process machinery
- Mining equipment
- Industrial ventilation
- General factory automation
The Altistart 22 platform is designed for common infrastructure and industrial applications, including pumps, fans, compressors and material-handling equipment.
Role in Industrial Control Systems
The ATS22D88Q normally operates between the electrical power-distribution system and the motor.
A typical industrial arrangement is:
Main Power Supply
↓
Circuit Breaker / Protection
↓
ATS22D88Q
↓
Three-Phase Motor
↓
Pump / Fan / Compressor / Conveyor
A PLC can send start and stop commands to the soft starter, while the ATS22D88Q manages the motor acceleration and stopping process.
This architecture allows the PLC to concentrate on process control while the soft starter handles motor-starting requirements.
The Modbus communication interface can also provide a connection between the soft starter and the automation network.
Motor Power and Electrical Characteristics
The 88 A starter rating is an important characteristic when selecting the ATS22D88Q for a motor application.
The model is designed for a motor power range of approximately 22–45 kW, depending on supply voltage.
| Supply Voltage | Typical Motor Application |
|---|---|
| 230 V AC | Approximately 22 kW |
| 400 V AC | Up to approximately 45 kW |
| 440 V AC | Up to approximately 45 kW |
Motor selection should always be based on the actual motor rated current and application conditions rather than motor horsepower or kilowatt rating alone.
Factors such as starting frequency, load inertia, ambient temperature and motor thermal characteristics should also be considered.
Industrial Applications
Pump Systems
The ATS22D88Q is well suited to pump applications where controlled acceleration is important.
Typical applications include:
- Water supply pumps
- Cooling-water pumps
- Wastewater pumps
- Industrial circulation pumps
- Centrifugal pumps
- Process-fluid pumps
Gradual acceleration can reduce sudden pressure changes and mechanical stress in the pump system.
Fan and Blower Systems
Large fans and blowers can have significant rotational inertia.
The ATS22D88Q can provide smoother acceleration, reducing stress on:
- Fan shafts
- Bearings
- Couplings
- Belts
- Gearboxes
- Motor assemblies
Compressor Systems
The soft starter can be used with compatible industrial compressor motors.
Typical applications include:
- Screw compressors
- Industrial air compressors
- Process compressors
- Refrigeration-related compressor equipment
Conveyor Systems
Conveyors can benefit from controlled acceleration because sudden torque can cause belt shock and product movement.
The ATS22D88Q can help provide smoother startup for:
- Belt conveyors
- Material-handling systems
- Packaging conveyors
- Industrial transport equipment
Internal Bypass Function
The ATS22D88Q includes an integrated internal bypass.
During startup, the electronic switching section controls the motor acceleration. After normal operating conditions are reached, the bypass function reduces continuous losses in the power-control section.
This can help reduce heat generation inside the control cabinet.
The integrated bypass also contributes to the compact design of the Altistart 22 platform and can reduce the amount of additional external motor-control hardware required.
Communication and Control
The ATS22D88Q supports Modbus communication through an RS-485 serial interface.
An RJ45 connector is used for the communication connection.
This allows the soft starter to be integrated into an industrial automation network.
Typical communication applications include:
- Motor status monitoring
- Fault monitoring
- Remote supervision
- Operating-state monitoring
- Parameter management
- PLC integration
- Centralized motor control
- Maintenance diagnostics
The ATS22D88Q also provides:
- 3 discrete inputs
- 2 relay outputs
- 1 PTC probe input
These interfaces allow the device to be integrated into both hardwired and network-based automation systems.
Protection and Monitoring
The ATS22D88Q provides integrated protection and monitoring functions for the motor, starter and electrical installation.
Important monitoring areas include:
- Motor thermal protection
- Starter thermal protection
- Line phase failure
- Motor current
- Starting conditions
- Fault status
- Operating status
- Electrical abnormalities
The 750 Ω PTC probe input can also be used with compatible motor temperature monitoring systems.
These functions help engineers identify abnormal operating conditions and support preventive maintenance.
Installation and System Integration
Mechanical Installation
The ATS22D88Q measures:
295 × 145 × 207 mm
The product weight is:
12 kg
The unit is designed for vertical installation with an operating position of approximately ±10°.
Because the device uses forced-convection cooling, adequate ventilation must be provided around the soft starter.
For applications requiring a cooling fan, the fan voltage must be matched to the control-voltage version of the ATS22 soft starter.
Electrical Installation
A typical electrical installation includes:
- Three-phase incoming power
- Motor output connections
- Protective grounding
- 230 V control supply
- PLC control wiring
- Motor protection equipment
- Modbus communication wiring where required
Correct cable selection, grounding and protective-device coordination are important for reliable operation.
Installation and Commissioning
A typical ATS22D88Q commissioning procedure includes:
- Verify the ATS22D88Q model.
- Confirm the motor rated voltage.
- Confirm the motor rated current.
- Check the motor power.
- Verify the 230 V control supply.
- Install the unit vertically.
- Connect the incoming three-phase supply.
- Connect the motor.
- Verify protective grounding.
- Configure motor parameters.
- Configure acceleration parameters.
- Configure stopping parameters.
- Verify control inputs.
- Verify relay outputs.
- Configure Modbus communication if required.
- Perform an initial motor startup.
- Monitor starting current.
- Check acceleration behavior.
- Test under normal load.
- Verify protection functions.
The final configuration should be based on the actual motor, load and operating environment.
Compatible System Components
The ATS22D88Q can work with a range of industrial automation and electrical components.
| Component | Function |
|---|---|
| PLC Controller | Motor sequencing and process control |
| HMI | Operator monitoring and control |
| Circuit Breaker | Short-circuit protection |
| Motor Protection Device | Motor protection |
| Contactor | Electrical isolation |
| Three-Phase Motor | Driven equipment |
| PTC Temperature Sensor | Motor thermal monitoring |
| Modbus Network | Industrial communication |
| RS-485 Network | Serial communication |
| Industrial Sensors | Process feedback |
| Motor Control Center | Centralized motor control |
| Control Cabinet | Physical installation |
| Cooling Fan | Additional thermal management where required |
These components can be selected according to the complete electrical and automation architecture.
Maintenance and Troubleshooting
Regular maintenance can help maintain stable operation of the ATS22D88Q.
Recommended maintenance activities include:
- Inspect power terminals.
- Check motor connections.
- Verify grounding.
- Inspect cooling surfaces.
- Check ventilation.
- Inspect the cooling fan where installed.
- Remove accumulated dust.
- Check control wiring.
- Inspect Modbus connections.
- Monitor motor current.
- Review fault indications.
- Verify starting parameters.
The cooling system deserves particular attention in environments with high temperatures, dust or restricted cabinet ventilation.
Common Fault Conditions
| Symptom | Possible Cause |
|---|---|
| Motor does not start | Power supply or control signal problem |
| Excessive starting current | Incorrect motor parameters or excessive load |
| Motor starts too quickly | Acceleration setting too short |
| Motor starts too slowly | Excessive load or unsuitable parameters |
| Soft starter trips | Protection condition or excessive motor current |
| Motor overheats | Excessive load or inadequate cooling |
| Repeated thermal faults | Excessive starting frequency |
| Communication failure | RS-485 wiring or Modbus configuration |
| Unexpected motor stop | Protection function or external command |
| No status feedback | Relay wiring or configuration issue |
| Abnormal acceleration | Incorrect motor parameters |
| Cooling problem | Blocked airflow or fan issue |
Before replacing the soft starter, the motor, incoming supply, control circuit, protection equipment and mechanical load should all be inspected.
Recommended Alternative Models
| Model | Product Type | Key Feature | Typical Application |
|---|---|---|---|
| ATS22D75Q | Soft Starter | 75 A class, 230 V control | Pumps and fans |
| ATS22D88S6 | Soft Starter | 88 A class with 230 V control | Industrial motor control |
| ATS22D88S6U | Soft Starter | 88 A class with 110 V control | Pumps and fans |
| ATS22D110Q | Soft Starter | Higher-current motor starting | Larger industrial motors |
| ATS22C11Q | Soft Starter | Higher-power motor control | Process equipment |
| ATS22C17Q | Soft Starter | Large motor starting | Heavy industrial systems |
| ATS48 Series | Soft Starter | Advanced motor starting | Industrial process applications |
| ATS430D88S6 | Soft Starter | Newer 88 A platform | Modern motor control |
| ATV630 | Variable Frequency Drive | Continuous speed regulation | Pumps and process systems |
| ATV650 | Variable Frequency Drive | Process-oriented drive control | Industrial automation |
For a modern replacement strategy, the ATS430D88S6 is a particularly relevant newer-generation 88 A soft-starter option. However, the supply voltage, control voltage, motor current, load characteristics and installation requirements should be verified before selecting it as a replacement.
Key Advantages
- Schneider Electric Altistart 22 series
- 88 A starter rating
- Three-phase asynchronous motor control
- 230–440 V AC supply
- 230 V AC control circuit
- Torque-controlled starting
- Starting current limitation
- Integrated internal bypass
- Modbus communication
- RS-485 interface
- RJ45 communication connector
- Three discrete inputs
- Two relay outputs
- 750 Ω PTC probe input
- Motor thermal protection
- Starter thermal protection
- Phase-failure protection
- Forced-convection cooling
- IP20 protection
- Vertical installation
- Suitable for pumps
- Suitable for fans
- Suitable for compressors
- Suitable for conveyors
- Dimensions: 295 × 145 × 207 mm
- Weight: 12 kg
Technical FAQs
What is the Schneider ATS22D88Q?
The ATS22D88Q is a Schneider Electric Altistart 22 soft starter designed for controlled starting and stopping of three-phase asynchronous motors.
What is the rated current of the ATS22D88Q?
The ATS22D88Q has an 88 A starter rating.
What supply voltage does it support?
The ATS22D88Q is designed for a 230–440 V AC three-phase supply.
What is the control voltage?
The control circuit voltage is 230 V AC.
What motor power is suitable for the ATS22D88Q?
The model is designed for approximately 22–45 kW motor applications, depending on the supply voltage and operating conditions.
Does the ATS22D88Q have an internal bypass?
Yes. The ATS22D88Q incorporates an integrated bypass function.
Does it support Modbus?
Yes. The soft starter supports Modbus communication through an RS-485 interface.
What are the dimensions of the ATS22D88Q?
The dimensions are 295 × 145 × 207 mm.
How much does the ATS22D88Q weigh?
The specified product weight is 12 kg.
Is the ATS22D88Q a variable frequency drive?
No. The ATS22D88Q is a soft starter. It is designed primarily for controlled motor starting and stopping rather than continuous variable-speed regulation.
What applications are suitable for the ATS22D88Q?
Typical applications include pumps, fans, compressors, conveyors, material-handling systems and other fixed-speed industrial motor applications.
What is the difference between ATS22D88Q and ATS22D88S6U?
The main distinction is the control configuration. The ATS22D88Q uses a 230 V control circuit, while the ATS22D88S6U uses a 110 V control circuit. These models should therefore not be considered electrically interchangeable without checking the complete control-system design.
Is the ATS22D88Q still suitable for existing industrial systems?
Yes. It can remain an appropriate replacement or maintenance component for compatible existing Altistart 22 installations. For new projects, engineers may also evaluate newer soft-starter platforms while checking complete electrical compatibility.
Conclusion
The Schneider ATS22D88Q Soft Starter is an 88 A industrial motor-control device designed to provide controlled starting and stopping for three-phase asynchronous motors. With its 230–440 V AC supply range, 230 V control circuit, torque-controlled starting, integrated bypass and Modbus communication capability, it can be integrated into a wide range of industrial automation systems.
The ATS22D88Q is particularly suitable for pumps, fans, compressors, conveyors and material-handling equipment, where direct motor starting can result in excessive electrical current or mechanical shock.
Its 295 × 145 × 207 mm dimensions and 12 kg weight make it suitable for vertical installation in industrial control cabinets and motor-control systems.
For maintenance engineers, automation integrators and industrial equipment specialists, the ATS22D88Q provides a practical solution for medium-power motor starting. When selecting a replacement, special attention should be paid to the 88 A rating, 230 V control voltage, motor current, supply voltage and application characteristics to ensure correct system compatibility.