Schneider Electric Altivar 71 (ATV71HU75N4Z)

The Schneider Electric Altivar 71 (ATV71HU75N4Z) is a heavy-duty Variable Frequency Drive (VFD) designed for high-performance applications requiring significant torque and precision, such as hoisting, elevators, and complex material handling.

The “Z” at the end of the part number is a specific designation meaning the drive is supplied without a graphic display terminal (keypad).

1. Catalog Number Breakdown

2. Technical Specifications

• Output Current: Continuous current of 17.6 Amps (at 400V).

• Overload Torque: Capable of 170% rated motor torque for 60 seconds (or 220% for 2 seconds).

• Control Algorithms: Support for Flux Vector Control (with or without encoder), V/Hz (2 or 5 point), and ENA (Energy Adaptation) system.

• Integrated Safety: Includes the Safe Torque Off (STO) function (Power Removal) to prevent unintended motor restarts.

3. Wiring and Terminals

The ATV71 has a modular layout for power and control:

• Power Terminals: $L1, L2, L3$ for mains input; $U, V, W$ for motor output.

• Braking Resistor: Terminals $PA/+$ and $PB$ allow for an external resistor, which is almost always required for the high-inertia loads this drive is designed for.

• Control I/O: Typically features 6 logic inputs, 2 analog inputs, 1 analog output, and 2 relay outputs.

4. Configuration Options (Since “Z” has no screen)

Because your unit does not come with a screen, you must use one of the following to set it up:

1. Remote Keypad (VW3A1101): You can plug a standard ATV71 graphic terminal into the RJ45 port on the front.

2. SoMove Software: Use a PC with a USB-to-RJ45 adapter cable (TCSMCNAM3M002P) to configure via Schneider’s free software.

3. Communication Cards: If the drive is on a network (Profinet, Ethernet/IP, Modbus TCP), you can configure it via the PLC or a web server.