ATV71HC40N4

The Schneider Electric ATV71HC40N4, also cataloged as the ATV71 Variable Speed Drive, controls synchronous and asynchronous motors from a three-phase 380...480 V supply. The drive provides 355 kW or 400 kW motor ratings, 600 hp maximum rating, adjustable 0.1...500 Hz output frequency, integrated EMC filtering, and Modbus/CANopen communication.

Hardware Specifications

Parameter	Specification
Model	ATV71HC40N4
Brand	Schneider Electric
Product Series	Altivar 71
Product Type	Variable Speed Drive
Application	Complex, high-power machines
Motor Power	355 kW or 400 kW, 3 phase, 380...480 V
Maximum Horsepower	600 hp
Supply Voltage	380...480 V, 3 phase
Supply Voltage Limits	323...528 V
Supply Frequency	50...60 Hz
Line Current	568 A at 480 V, 400 kW / 600 hp; 709 A at 380 V, 400 kW / 600 hp
Nominal Output Current	759 A at 2.5 kHz, 400 kW / 600 hp
Maximum Transient Current	1138 A for 60 s; 1252 A for 2 s, 400 kW / 600 hp
Output Frequency	0.1...500 Hz
Switching Frequency	2.5...8 kHz adjustable
EMC Filter	Integrated
Motor Control	V/F, sensorless flux vector control, sensor flux vector control, ENA energy adaptation
Braking Torque	<= 150 % with braking or hoist resistor; 30 % without braking resistor
Transient Overtorque	170 % +/- 10 % for 60 s; 220 % +/- 10 % for 2 s
Analog Inputs	2
Analog Output	1
Discrete Inputs	7
Discrete Outputs	2 configurable relay outputs
Communication	Modbus, CANopen
Physical Interface	2-wire RS 485 Modbus
Transmission Frame	RTU Modbus
Modbus Transmission Rate	4800, 9600, 19200, 38.4 Kbps
CANopen Transmission Rate	20, 50, 125, 250, 500 kbps, 1 Mbps
Dimensions	1390 mm H x 890 mm W x 377 mm D
Weight	330 kg
Operating Temp	-10...50 deg C without derating
Storage Temp	-25...70 deg C
IP Rating	IP20
Operating Position	Vertical +/- 10 deg
Power Consumption	Not specified in the supplied source
Origin	Not specified in the supplied source
Status	Discontinued February 17, 2021; end-of-service December 31, 2028
Replacement	No replacement specified by Schneider Electric

The supplied Schneider Electric data identifies the dimensional, electrical, environmental, communication, and lifecycle specifications above. It does not provide a power-consumption value or manufacturing origin.

Motor Control and Communication Characteristics

The ATV71HC40N4 supports asynchronous and synchronous motor control. For asynchronous motors, the control profiles include voltage/frequency ratio, sensorless flux vector control, sensor-based flux vector control, and ENA energy adaptation for unbalanced loads. Closed-loop operation with encoder feedback provides a specified speed accuracy of +/- 0.01 % of nominal speed within the stated 0.2 Tn to Tn range.
The control interface includes two analog inputs, one analog output, seven discrete inputs, and two configurable relay outputs. AI1 supports bipolar differential +/- 10 V DC input, while AI2 can be configured for 0...20 mA or 0...10 V DC. The discrete inputs support 24 V DC logic, with LI6 configurable for a PTC probe input.

For industrial network communication, the drive provides Modbus and CANopen. Modbus uses a 2-wire RS 485 physical interface and RTU framing. The unit has RJ45 interfaces for Modbus and a SUB-D 9 interface associated with CANopen. Optional communication cards include EtherNet/IP, DeviceNet, Profibus DP, Modbus TCP, CC-Link, Fipio, Interbus-S, and Modbus Plus.

Frequently Asked Questions

Q: What motor ratings are specified for the ATV71HC40N4?
A: The supplied data specifies 355 kW and 400 kW motor ratings at three-phase 380...480 V, with a maximum rating of 600 hp.

Q: What communication protocols are integrated?
A: The drive provides Modbus and CANopen. Modbus uses a 2-wire RS 485 interface with RTU framing.

Q: Can the drive operate at different switching frequencies?
A: Yes. The nominal switching frequency is 2.5 kHz, and the adjustable switching-frequency range is 2.5...8 kHz, with derating applying as specified.

Field Installation Guidelines

Install the drive in the specified vertical position and provide mechanical support suitable for its 330 kg net weight. The supplied dimensions are 1390 mm high, 890 mm wide, and 377 mm deep. The enclosure and installation arrangement must account for the IP20 protection level.
Use the specified power and control terminals for their assigned circuits. The source identifies separate terminal arrangements for control wiring, DC bus connections, input power, and motor output connections. Apply the specified tightening torque to each terminal group rather than using a common torque value.

Keep motor power wiring physically separated from low-level analog and communication wiring where practical. Maintain shield continuity and grounding according to the applicable drive installation documentation and site EMC practices. The unit contains an integrated EMC filter and is specified for IEC 61800-3 category C3 environments.
For motor cable selection, the supplied data specifies a maximum length of 100 m for shielded cable and 200 m for unshielded cable. Cable type and conductor temperature ratings depend on the enclosure or mounting-kit configuration.
The ATV71HC40N4 was discontinued on February 17, 2021, is scheduled for end-of-service on December 31, 2028, and has no listed replacement in the supplied Schneider Electric data.

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