ATV71HD22N4

The Schneider Electric ATV71HD22N4, also cataloged as the ATV71 variable speed drive, provides three-phase motor speed and torque control for 22 kW asynchronous or synchronous motors from a 380 to 480 V supply. It integrates an EMC filter and supports Modbus and CANopen communication interfaces.

Hardware Specifications

Parameter	Specification
Model	ATV71HD22N4
Brand	Schneider Electric
Series	Altivar 71
Product Type	Variable Speed Drive
Motor Power	22 kW / 30 hp, 3 phase, 380 to 480 V
Supply Voltage	380 to 480 V, -15% to +10%
Supply Voltage Limits	323 to 528 V
Supply Frequency	50 to 60 Hz
Phase	3 phase
Line Current	42 A at 480 V; 50 A at 380 V
Nominal Output Current	40 A at 460 V, 4 kHz; 48 A at 380 V, 4 kHz
Maximum Transient Current	72 A for 60 s; 79.2 A for 2 s
Output Frequency	0.1 to 599 Hz
Switching Frequency	1 to 16 kHz adjustable; 4 to 16 kHz with derating
EMC Filter	Integrated
Motor Control	V/Hz, sensorless flux vector control, sensor flux vector control, ENA energy adaptation
Maximum Motor Cable Length	100 m shielded; 200 m unshielded
Analog Inputs	2
Analog Output	1
Discrete Inputs	7
Discrete Outputs	2 relay outputs
Communication	Modbus RTU, CANopen
Modbus Interface	2-wire RS 485
Modbus Transmission Rate	4800, 9600, 19200, 38.4 Kbps
CANopen Transmission Rate	20, 50, 125, 250, 500 Kbps, 1 Mbps
IP Rating	IP20
Operating Position	Vertical, +/- 10 degree
Dimensions	420 x 230 x 236 mm
Weight	21 kg
Operating Temp	-10 to 50 deg C without derating
Storage Temp	-25 to 70 deg C
Relative Humidity	5 to 95%, non-condensing
Operating Altitude	Up to 1000 m without derating; 1000 to 3000 m with 1% current derating per 100 m
Power Consumption	Not specified in the supplied data
Standards	IEC 61800-5-1, IEC 61800-3, IEC 60721-3-3, EN 55011
Certifications	UL, NOM 117, CSA, GOST, C-tick
Pollution Degree	2 per IEC 61800-5-1; 3 per UL 840
Product Status	Discontinued December 2, 2020; end of service March 31, 2028
Replacement Options	ATV340D22N4, ATV340D22N4E, ATV930D22N4, ATV930D30N4, ATV930D30N4M

Drive Control and Communication Interfaces

The ATV71HD22N4 accepts two analog inputs and seven discrete inputs for direct control and feedback signals. AI1 supports bipolar +/- 10 V DC input, while AI2 can be configured for 0 to 20 mA or 0 to 10 V DC. AO1 can provide 0 to 20 mA or 0 to 10 V DC output.

The drive provides Modbus RTU through 2-wire RS 485 and CANopen through the specified connector interfaces. Modbus supports address ranges from 1 to 247, while CANopen supports node addresses from 1 to 127. Optional communication cards provide interfaces including EtherNet/IP, DeviceNet, Profibus DP, Modbus TCP, CC-Link, Fipio, Interbus-S, and Modbus Plus.

Motor control supports open-loop and encoder-feedback operation. With encoder feedback, the specified asynchronous motor speed range extends to 1:1000. The drive also supports adjustable PI regulation, DC injection braking, and braking resistor operation.

Frequently Asked Questions

Q: What motor supply range is specified for the ATV71HD22N4?
A: The drive is rated for three-phase 380 to 480 V motor power, with a 323 to 528 V power supply operating limit.

Q: Which communication protocols are built into the drive?
A: The base drive provides Modbus RTU over 2-wire RS 485 and CANopen. Additional communication functions can be provided through optional interface cards.

Q: What is the maximum specified motor cable length?
A: The specified maximum is 100 m with shielded cable or 200 m with unshielded cable.

Field Installation Guidelines

Mount the drive vertically within the specified +/- 10 degree operating position and provide the enclosure clearances required by the ATV71 installation documentation.

Route power conductors separately from analog, discrete, and communication wiring. Use shielded motor cable where required by the installation design and terminate the shield according to the applicable EMC installation practice.

Connect the three-phase input to L1/R, L2/S, and L3/T and the motor output to U/T1, V/T2, and W/T3. Verify terminal tightening torque against the supplied installation documentation before energizing the drive.

For Modbus wiring, maintain the RS 485 signal pair as a controlled communication path and separate it from high-current motor conductors. Connect protective earth and cable shields according to the drive installation instructions.

The ATV71HD22N4 is discontinued and is scheduled for end of service on March 31, 2028. The supplied Schneider Electric data identifies ATV340 and ATV930 products as replacement options; replacement selection should be checked against motor duty, enclosure, braking, communication, and application requirements.

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