ATV320U04N4B

The Schneider Electric ATV320U04N4B, also cataloged as the ATV320 Variable Speed Drive, controls 3-phase asynchronous and synchronous motors from a 380 to 500 VAC supply. The drive provides 1.5 A nominal output current, 0.37 kW heavy-duty motor rating, configurable analog and discrete I/O, and Modbus serial or CANopen communication.

Hardware Specifications

Parameter	Specification
Model	ATV320U04N4B
Brand	Schneider Electric
Product Series	Altivar Machine ATV320
Product Type	Variable Speed Drive
Format	Book
Mounting	Cabinet mount, vertical +/- 10 deg
Rated Supply Voltage	380...500 VAC
Network Frequency	50-60 Hz
Nominal Output Current	1.5 A
Motor Power	0.37 kW heavy duty
Maximum Horsepower	0.5 hp
Maximum Output Voltage	500 V
Line Current	2.1 A at 380 V, 1.6 A at 500 V
Apparent Power	1.4 kVA at 500 V heavy duty
Maximum Output Frequency	0.599 kHz
Switching Frequency	2...16 kHz adjustable; 4...16 kHz with derating
Nominal Switching Frequency	4 kHz
Brake Chopper	Integrated
EMC Filter	Class C2 integrated
Discrete Inputs	7, including STO and DI1...DI6
Discrete Outputs	3 open collector outputs
Analog Inputs	3: voltage, bipolar differential voltage, and current
Analog Output	1 configurable 0...20 mA or 0...10 VDC
Relay Outputs	R1 and R2 configurable relay logic
Communication	Modbus serial, CANopen
Optional Communication Modules	CANopen, EtherCAT, Profibus DP V1, PROFINET, Ethernet Powerlink, EtherNet/IP, DeviceNet
Safety Functions	STO, SS1, SLS
Protection	Input phase loss, output phase-to-earth overcurrent, drive overheating, motor phase short circuit, thermal protection
Dimensions	45.0 mm W x 325.0 mm H x 245.0 mm D
Weight	2.5 kg
Operating Temp	-10...50 deg C without derating; 50...60 deg C with derating
Storage Temp	-25...70 deg C
Environmental Class	Class 3C3 and Class 3S2 according to IEC 60721-3-3
Operating Humidity	Class 3K5 according to EN 60721-3
Power Consumption	Fan: 23.0 W at 380 V, 4 kHz
Cooling Air Volume	9.4 m3/h
IP Rating	IP20
Overvoltage Category	III
Pollution Degree	2
Origin	ID
Standards	IEC 61800-5-1

PLC and Drive Control Interface

The ATV320U04N4B uses a configurable I/O structure for direct motor control and machine feedback. DI1 through DI6 operate at 24 VDC, while DI5 can be configured as a pulse input up to 0...30 kHz. The analog interface includes 0...10 VDC, +/- 10 VDC differential, and 0...20 mA input functions. AQ1 can be configured for either 0...20 mA or 0...10 VDC output.

The drive supports voltage/frequency control and sensorless flux vector control for asynchronous motors, together with sensorless vector control for synchronous motors. Its switching frequency is adjustable from 2 to 16 kHz, with derating applicable in the specified higher-frequency range.

Communication is provided through Modbus serial and CANopen. Optional communication modules extend the interface to PROFINET, EtherNet/IP, EtherCAT, Profibus DP V1, Ethernet Powerlink, DeviceNet, and additional CANopen configurations.

Frequently Asked Questions

Q: What motor supply range is specified for the ATV320U04N4B?
A: The rated input supply range is 380...500 VAC, 3-phase, with a network frequency of 50-60 Hz.

Q: What analog signals can the drive accept?
A: AI1 accepts 0...10 VDC, AI2 accepts +/- 10 VDC differential voltage, and AI3 accepts configurable current input patterns including 0...20 mA and 4...20 mA.

Q: Which integrated safety functions are specified?
A: The supplied data identifies Safe Torque Off (STO), Safe Stop 1 (SS1), and Safely Limited Speed (SLS) as available safety functions. Other listed safety functions are not provided on this variant.

Field Installation Guidelines

Mount the ATV320U04N4B in the specified vertical position within a cabinet using its four fixing holes. Maintain the stated operating orientation of +/- 10 deg.

Connect the 3-phase supply and motor conductors according to the drive wiring documentation. Keep power conductors separated from low-level analog and control wiring where practical to reduce conducted interference.

For analog signals, use appropriate shielded instrumentation cable where required by the installation design. Terminate cable shields according to the cabinet grounding scheme and avoid routing analog signal cables in parallel with high-current motor conductors.

Verify the 24 VDC control supply and I/O polarity before energizing the drive. STO wiring must be implemented according to the applicable safety circuit design and the ATV320 installation documentation.

Provide adequate cabinet ventilation for the specified cooling-air requirement. The documented operating range is -10...50 deg C without derating and 50...60 deg C with derating. Confirm that cabinet temperature remains within this range during operation.

The integrated Class C2 EMC filter, protective earth connection, motor cable arrangement, and any external EMC components should be installed according to the applicable Schneider Electric installation instructions.

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