3-ph VFD Inverter 4.0KW/5.5HP

The SINEE EM730-4R0-3B is a high-reliability, general-purpose inverter (Variable Frequency Drive, VFD) designed for industrial automation and machinery. This compact and robust drive is engineered for three-phase AC asynchronous motors and, in non-standard versions, supports permanent magnet synchronous motors. It offers advanced control technologies, including vector V/F (VVF) and speed sensorless vector control (SVC), supporting both speed and torque output modes for versatile industrial applications.

Key features include robust protection against short circuit, overcurrent, overvoltage, overload, overheating, and more. The EM730-4R0-3B can operate reliably at full load up to 50°C ambient temperature without derating. It supports high-frequency output up to 3000 Hz for driving high-speed motors and features a 100 kHz high-speed pulse input. The inverter is equipped with a plug-in LED keyboard for easy parameter setting and monitoring, and supports Wi-Fi access and mobile app integration for remote debugging and monitoring.

Key Features:

• Motor Compatibility: Three-phase AC asynchronous motors (permanent magnet synchronous motors in non-standard versions)

• Power Range: 4.0 kW

• Input Voltage: Three-phase 340–460V AC, 50/60 Hz

• Output Voltage: Matches input supply voltage

• Heavy-Duty Rated Output Current: 9.4 A

• Light-Duty Rated Output Current: 10.5 A

• Control Modes: V/F (VVF), speed sensorless vector control (SVC)

• Output Modes: Speed and torque

• Protection: Short circuit, overcurrent, overvoltage, overload, overheating, phase loss, load loss, external protection, and more

• Communication: Modbus RTU, Wi-Fi, mobile app support

• Display: Pluggable LED keyboard with five-digit digital tube, four operation buttons, digital potentiometer, and status indicators

  Overload Capability: 150% heavy-duty rated current for 60 seconds; 180% for 10 seconds; 200% for 2 seconds

• Cooling Method: Forced air (typical for this series)

• Special Functions: Rewinding, unwinding, high-frequency output (up to 3000 Hz), high-speed pulse input (100 kHz)

• Protection Class: IP20/IP21

• Applications: Woodworking, food, packaging, cable, fan, and hydropower machinery

Applications:
Ideal for variable speed control of industrial motors in manufacturing, material handling, HVAC, and process automation.