ATV930U75N4 Variable Speed Drive 7.5kW 400-480V Brake Chopper IP21

The ATV930U75N4 is a three-phase variable speed drive designed for industrial motor-control applications requiring process monitoring, dynamic speed regulation and controlled deceleration.

Its main power rating is 7.5 kW under normal-duty operating conditions, with a continuous output current of 16.5 A. For heavy-duty applications requiring higher overload capacity, the drive is rated for a 5.5 kW motor with 12.7 A continuous output current.

The integrated braking chopper distinguishes this configuration from drives that require a separate braking control unit. When dynamic braking is required, a correctly sized external braking resistor must still be selected according to motor power, load inertia and braking frequency.

The drive accepts a 380–480 V three-phase supply and supports both asynchronous and synchronous motors. Its control system provides variable-torque, constant-torque and optimized-torque operating profiles.

Built-in EtherNet/IP, Modbus TCP and Modbus serial communication simplify connection to compatible industrial control networks. Additional communication protocols require the appropriate optional communication module and should not be described as standard built-in interfaces.

The IP21 wall-mounted enclosure measures 171 mm wide, 409 mm high and 236 mm deep. It is intended for installation in a protected industrial area or suitable electrical cabinet with sufficient cooling clearance.

Key Features

• 7.5 kW normal-duty motor rating
• 5.5 kW heavy-duty motor rating
• 380–480 V three-phase input
• 16.5 A normal-duty output current
• 12.7 A heavy-duty output current
• 19.8 A maximum transient current for 60 seconds
• Integrated braking chopper
• Integrated EMC filter
• Maximum output frequency of 599 Hz
• Adjustable switching frequency from 2 to 16 kHz
• Asynchronous motor compatibility
• Permanent-magnet motor compatibility
• Synchronous-reluctance motor compatibility
• Built-in Ethernet and serial communication
• Embedded power and process monitoring
• IP21 wall-mounted construction
• Compact 171 mm enclosure width

Normal Duty and Heavy Duty Difference

Normal duty supports a 7.5 kW motor with 16.5 A continuous output current. This configuration is suitable for applications with moderate overload requirements.

Heavy duty supports a 5.5 kW motor with 12.7 A continuous output current. It is intended for applications requiring greater starting torque or more demanding acceleration and load cycles.

The operating mode must be selected according to the motor nameplate, load profile, acceleration time and required overload capacity.

Communication Interfaces

The following communication protocols are built in:

• EtherNet/IP
• Modbus TCP
• Modbus serial

Protocols such as PROFINET, PROFIBUS DP, CANopen, DeviceNet, EtherCAT and Ethernet POWERLINK require compatible optional communication modules. They should not be listed as standard built-in protocols.

Typical Applications

• Industrial pumps
• Process fans and blowers
• Mixers and agitators
• Conveyor systems
• Material-handling machinery
• Extrusion equipment
• Winding and unwinding systems
• Cooling-tower equipment
• Industrial compressors
• Process production lines
• Applications requiring controlled deceleration

Installation and Selection Notes

Verify whether the application requires normal-duty or heavy-duty operation before selecting the drive and motor.

The integrated braking chopper does not mean that a braking resistor is included. Select the external resistor according to the motor, load inertia, stopping time and braking cycle.

Mount the drive vertically and maintain adequate ventilation space around the enclosure. The recommended upper and lower clearance is at least 100 mm for individual IP21 installation.

Confirm the input voltage, motor current, duty classification, braking requirements, communication interface and control terminal configuration before replacing an existing drive.

Frequently Asked Questions

1. What motor power does ATV930U75N4 support?

It supports a 7.5 kW motor in normal-duty operation and a 5.5 kW motor in heavy-duty operation.

2. What is the rated output current?

Continuous output current is 16.5 A for normal duty and 12.7 A for heavy duty.

3. What power supply does this drive require?

It requires a 380–480 V AC three-phase power supply with a permitted voltage range of -15% to +10%.

4. Does it include a braking chopper?

Yes. The braking chopper is integrated into the drive.

5. Is a braking resistor included?

No. A compatible external braking resistor must be selected separately when required by the application.

6. Which communication protocols are built in?

EtherNet/IP, Modbus TCP and Modbus serial are built in. Other industrial protocols require optional communication modules.

7. Can it control synchronous motors?

Yes. It supports asynchronous motors, permanent-magnet synchronous motors and synchronous-reluctance motors when correctly configured.

8. What does the IP21 rating mean?

IP21 provides protection against finger-sized solid objects and vertically falling water drops. The drive should be installed in a protected indoor location or suitable electrical cabinet.

9. What are the installation dimensions?

The drive measures 171 mm wide, 409 mm high and 236 mm deep. Its net weight is 7.7 kg.

10. What should be checked before replacing an existing drive?

Verify the complete model number, input voltage, motor power, output current, duty classification, braking resistor, communication modules, dimensions and terminal configuration.