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The Schneider Electric ATV320U04M2B Variable Speed Drive is a compact Altivar Machine ATV320 variable frequency drive designed for industrial machinery, OEM equipment, and automated motor-control applications. It provides adjustable speed and torque control for small three-phase AC motors while combining compact cabinet installation with advanced motor-control and machine-safety functions.
The ATV320U04M2B is rated for 0.37 kW (0.5 HP) heavy-duty motor applications and uses a 200–240 V AC single-phase power supply. The drive provides a three-phase output for compatible motors and supports both asynchronous and synchronous motor-control applications.
As part of the ATV320 family, the ATV320U04M2B is intended for machine applications where accurate speed regulation, controlled acceleration and deceleration, communication capability, and reliable motor protection are required. Its Book format allows the drive to be installed efficiently in control cabinets, particularly where a narrow vertical installation footprint is preferred.
The specified dimensions are 45 × 325 × 245 mm, while the product weight is approximately 2.4 kg. The compact vertical design allows machine builders to save valuable control-panel space while still incorporating advanced variable speed control into their equipment.
The ATV320U04M2B can be used in conveyors, packaging equipment, feeders, pumps, fans, material-handling machines, textile machinery, and other compact industrial systems.
| Parameter | Details |
|---|---|
| Manufacturer | Schneider Electric |
| Product Series | Altivar Machine ATV320 |
| Model | ATV320U04M2B |
| Product Type | Variable Speed Drive |
| Drive Format | Book |
| Rated Motor Power | 0.37 kW (0.5 HP) |
| Duty Rating | Heavy Duty |
| Rated Supply Voltage | 200–240 V AC |
| Input Supply | Single-phase |
| Motor Output | Three-phase AC |
| Supply Frequency | 50–60 Hz |
| Nominal Output Current | 3.3 A |
| Maximum Transient Current | 5.0 A for 60 seconds |
| Motor Compatibility | Asynchronous and Synchronous Motors |
| Control Technology | Sensorless Flux Vector Control, V/F Control |
| Maximum Output Frequency | 599 Hz |
| Integrated EMC Filter | Class C2 |
| Protection Rating | IP20 |
| Cooling Method | Fan-cooled |
| Integrated Brake Chopper | Yes |
| Communication | Modbus Serial, CANopen |
| Safety Functions | STO, SS1, SLS |
| Mounting | Cabinet Mount |
| Installation Position | Vertical ±10° |
| Dimensions | 45 × 325 × 245 mm |
| Weight | 2.4 kg |
| Typical Application | Industrial Machinery and OEM Automation |
The main function of the ATV320U04M2B is to control the speed and torque of a connected AC motor by varying the frequency and voltage supplied to the motor.
The basic power-conversion process can be represented as:
Single-Phase AC Input → Rectifier → DC Bus → Inverter → Variable-Frequency Three-Phase Output → Motor
The incoming AC power is first converted into DC power inside the drive. The inverter section then generates a controlled three-phase output for the motor.
By adjusting output frequency and voltage, the drive allows the motor to operate at different speeds instead of being limited to the fixed frequency of the electrical supply.
The drive can provide:
The sensorless flux vector-control function can improve motor torque and speed performance, particularly in applications where stable low-speed operation is important.
The ATV320U04M2B acts as the motor-control interface between an industrial automation controller and a small AC motor.
A typical machine-control architecture may include:
The PLC can provide start/stop commands and speed references to the drive. The ATV320U04M2B then converts these commands into the appropriate electrical output for the motor.
At the same time, the drive can return operating information to the control system, such as:
This division of responsibilities allows the PLC to manage machine logic while the drive manages motor power and speed control.
For OEM machine builders, this architecture provides a flexible method of standardizing motor-control functions across different machine models.
The ATV320U04M2B is designed for a broad range of compact industrial machinery.
The drive can control small conveyor motors used in production lines, packaging equipment, material handling, and automated transfer systems.
Variable speed control allows the conveyor speed to be adjusted according to production requirements, while controlled acceleration and deceleration can reduce mechanical shock.
Packaging machines often require controlled motor speeds for feeding, positioning, indexing, sealing, labeling, and conveying.
The ATV320U04M2B can provide adjustable motor operation for these applications.
Small industrial pumps can benefit from variable speed control because motor speed can be adjusted according to actual process requirements.
This can help reduce unnecessary motor operation at maximum speed and improve overall system efficiency.
The drive can regulate small fan motors according to ventilation requirements, making it suitable for automated cooling and air-handling systems.
The ATV320U04M2B can be integrated into feeders, rollers, transfer mechanisms, and other compact material-handling equipment requiring controlled motor speed.
Small textile machines can use variable speed control for winding, feeding, material movement, and other processes requiring stable motor operation.
The narrow Book-format design is particularly useful for machine builders that need to install variable speed drives inside compact electrical cabinets.
Proper installation is essential for reliable operation and long service life.
Before installation, engineers should verify:
The ATV320U04M2B is designed for 200–240 V single-phase input. The electrical supply should therefore be correctly matched to the model before commissioning.
Correct cable routing, grounding, and EMC practices should be maintained to minimize electrical interference and improve system stability.
The ATV320U04M2B can be integrated into automation systems through its supported communication architecture.
Modbus serial communication can be used to exchange operating commands and drive information with compatible controllers and supervisory devices.
CANopen can be used for distributed machine-control applications where multiple automation devices need to communicate over a common network.
Typical communication functions include:
Additional communication modules can be selected for certain industrial network architectures when required by the machine design.
The ATV320U04M2B can be integrated with a variety of industrial automation components.
| Component | Function |
|---|---|
| Schneider Modicon PLC | Machine logic and process control |
| HMI | Operator monitoring and control |
| Three-Phase AC Motor | Mechanical power generation |
| SoMove Software | Drive configuration and diagnostics |
| EcoStruxure Machine Expert | Machine automation engineering |
| Modbus Devices | Serial industrial communication |
| CANopen Devices | Distributed machine control |
| Braking Resistor | Dynamic braking |
| Line Choke | Input-side power conditioning |
| Motor Choke | Motor-side protection |
| EMC Components | Electromagnetic interference management |
| Circuit Breaker | Electrical protection |
| Safety Relay | Machine safety integration |
| Proximity Sensors | Position and object detection |
| Limit Switches | Mechanical position monitoring |
The actual selection of accessories should be based on the motor rating, braking requirements, electrical installation, environmental conditions, and machine safety design.
When selecting an alternative ATV320 drive, engineers should compare motor power, input voltage, supply phase, physical format, communication requirements, and installation space.
| Model | Type | Key Feature | Typical Application |
|---|---|---|---|
| ATV320U02M2B | Variable Speed Drive | 0.18 kW, 200–240 V, 1-phase | Small OEM Machinery |
| ATV320U04M2B | Variable Speed Drive | 0.37 kW, 200–240 V, 1-phase | Compact Industrial Machines |
| ATV320U06M2B | Variable Speed Drive | 0.55 kW, 200–240 V, 1-phase | Small Pumps and Conveyors |
| ATV320U07M2B | Variable Speed Drive | 0.75 kW, 200–240 V, 1-phase | Fans, Pumps and Conveyors |
| ATV320U11M2B | Variable Speed Drive | 1.1 kW, 200–240 V, 1-phase | Medium Machine Applications |
| ATV320U15M2B | Variable Speed Drive | 1.5 kW, 200–240 V, 1-phase | Industrial Automation Equipment |
The ATV320U02M2B is a lower-power alternative, while the ATV320U06M2B and ATV320U07M2B provide higher motor-power capacity within the same general 200–240 V single-phase ATV320 family.
For replacement applications, the complete electrical and mechanical specifications should always be checked rather than selecting a drive based only on motor power.
The ATV320U04M2B is a 0.37 kW Altivar Machine ATV320 Variable Speed Drive designed for controlling small AC motors in industrial machinery and OEM automation systems.
The drive has a 0.37 kW (0.5 HP) heavy-duty motor rating.
The ATV320U04M2B is designed for a 200–240 V AC single-phase power supply.
The nominal continuous output current is approximately 3.3 A under the specified heavy-duty rating.
The drive can provide approximately 5.0 A for 60 seconds under the specified operating conditions.
The specified dimensions are 45 × 325 × 245 mm.
The product weight is approximately 2.4 kg.
Yes. The drive supports asynchronous motor control, including sensorless flux vector control.
Yes. The ATV320 platform supports compatible synchronous motor applications.
Yes. The ATV320U04M2B includes an integrated Class C2 EMC filter.
Yes. The drive includes an integrated brake chopper for compatible dynamic-braking applications.
The drive supports Modbus serial communication and CANopen, with additional communication options available depending on the system configuration.
The drive supports machine-safety functions including Safe Torque Off (STO), Safe Stop 1 (SS1), and Safely Limited Speed (SLS).
Typical applications include packaging machines, conveyors, feeders, pumps, fans, textile equipment, material-handling systems, and compact OEM machinery.
Both models belong to the ATV320 family and are designed for 0.37 kW applications, but the U04M2B is the Book-format version, while the U04M2C uses the Compact format. Their physical installation requirements and dimensions are therefore different.
The Schneider Electric ATV320U04M2B Variable Speed Drive is a compact 0.37 kW AC drive designed for OEM machinery and industrial automation applications requiring reliable variable speed motor control.
With a 200–240 V AC single-phase input, three-phase motor output, sensorless flux vector control, integrated EMC filtering, brake-chopping capability, and machine-oriented safety functions, the ATV320U04M2B provides considerably more functionality than a basic frequency converter.
Its 45 × 325 × 245 mm Book-format construction and approximately 2.4 kg weight make it particularly suitable for control cabinets where a narrow vertical installation footprint is preferred. Modbus communication, CANopen capability, and compatibility with Schneider automation tools further simplify its integration into modern machine-control architectures.
For OEM machine manufacturers, system integrators, and industrial maintenance engineers, the ATV320U04M2B is a practical solution for small conveyors, packaging equipment, pumps, fans, feeders, textile machinery, and other automated equipment requiring dependable and adjustable motor control.