Product Introduction
When industrial motors face electrical disturbances and demanding loads, the Schneider ATV71HC11N4 variable frequency drive delivers reliable control and protection. This drive is part of the Altivar 71 series, designed for complex, high-power machines. It supports motors up to 110 kW (150 hp) at 480 V AC, 3-phase.
The ATV71HC11N4 includes an integrated EMC filter to minimize electromagnetic interference, and a graphic terminal for easy configuration. Its reinforced version ensures durability in harsh industrial environments.
Technical Specifications
| Parameter |
Value |
| Motor Power |
110 kW (150 hp) |
| Voltage Rating |
480 V AC, 3-phase |
| Line Current |
163 A at 480 V, 202 A at 380 V |
| Output Frequency |
0.1…500 Hz |
| Nominal Switching Frequency |
2.5 kHz (adjustable 2.5…8 kHz) |
| EMC Filter |
Integrated |
| Communication Ports |
Modbus (RJ45), CANopen |
| Protection Types |
Overvoltage, undervoltage, overcurrent, short-circuit, phase loss, thermal |
| Operating Temperature |
-10…50°C (14…122°F) |
| Storage Temperature |
-25…70°C (-13…158°F) |
| Net Weight |
106 kg (233.7 lb) |
The Schneider ATV71HC11N4 features sensorless flux vector control, voltage/frequency ratios, and an adjustable PI regulator for precise speed and torque control.
Applications & Use Cases
The ATV71HC11N4 is suited for complex, high-power machines such as conveyors, pumps, fans, and compressors in industries like mining, oil and gas, and manufacturing. It provides two asynchronous motor control profiles: voltage/frequency ratio and sensorless flux vector control. For synchronous motors, it offers vector control without speed feedback. The drive can handle transient overtorque up to 220% for 2 seconds, making it ideal for heavy load starts.
Compatibility & Integration
The Schneider ATV71HC11N4 supports Modbus and CANopen communication protocols via RJ45 and SUB-D connectors. It can be expanded with optional communication cards for DeviceNet, EtherNet/IP, Profibus DP, Fipio, Modbus TCP, and others. The drive also accepts encoder feedback for closed-loop operation, enabling speed accuracy up to +/- 0.01% of nominal speed.
Troubleshooting & Common Issues
The Schneider ATV71HC11N4 includes comprehensive protection against common drive failures. It guards against input phase loss, line supply overvoltage and undervoltage, overcurrent between phases and earth, overheating, and short-circuits. The drive features a diagnostic LED and Safe Torque Off (STO) function. Its integrated DC injection braking and adjustable ramps reduce stress on motors and mechanical components, minimizing unexpected downtime.
Selection Guide & Purchasing Advice
When selecting the ATV71HC11N4, confirm your motor power (110 kW max), supply voltage (380-480 V AC), and required communication options. The drive is compatible with asynchronous and synchronous motors. For reliable supply, PLC Source PRO (available at ubest101.myshopify.com) offers genuine Schneider drives with fast shipping and expert support.