Hitachi WJ200N-040HFC The Inverter That Delivers Precise and Energy-Saving Motor Control

Hitachi WJ200N-040HFC Inverter

The Hitachi WJ200N-040HFC is a high-performance, compact, and versatile variable frequency drive (VFD) designed for three-phase AC induction motors. As part of the WJ200N series, this model is engineered to deliver precise motor control, energy efficiency, and robust operation in a wide range of industrial applications. With a power rating of 4.0 kW (5.5 HP) in constant torque (CT) mode and 5.5 kW (7.5 HP) in variable torque (VT) mode, this inverter is ideal for applications such as conveyors, pumps, fans, and machine tools.

Key Features

Advanced Motor Control

The WJ200N-040HFC utilizes state-of-the-art control algorithms, including:

• Sensorless Vector Control (SLV): Provides high starting torque (200% at 0.5 Hz) without the need for an encoder.

• V/F Control: Supports constant torque, variable torque, and user-defined V/F curves.

• Auto-Tuning: Automatically identifies motor parameters for optimized performance.

Energy Efficiency

• Built-in energy-saving mode adjusts voltage and frequency to minimize power consumption under light loads.

• Dynamic braking capability with optional resistor support for efficient deceleration.

User-Friendly Programming and Monitoring

• Integrated keypad with four-digit LED display for easy parameter setting and real-time monitoring.

• Support for multiple control sources: keypad, analog inputs, digital terminals, and Modbus communication.

• Pre-programmed multi-speed profiles (16 speeds) and jog function for flexible operation.

Safety and Protection

• Comprehensive protection features: overcurrent, overvoltage, undervoltage, overload, ground fault, and motor overheating detection.

• Safe Torque Off (STO) function compliant with safety standards (via optional configuration).

• DC braking and emergency stop functionality.

Connectivity and Integration

• Built-in RS-485 Modbus RTU interface for seamless integration into industrial networks.

• Optional fieldbus modules (Profibus, DeviceNet, etc.) available.

• Analog and digital I/O terminals for flexible control logic integration.

Technical Specifications

Applications

The WJ200N-040HFC is suitable for a wide variety of applications, including:

• Pumps and Fans: Energy-efficient flow control with smooth acceleration and deceleration.

• Conveyor Systems: Precise speed control and high starting torque for heavy loads.

• Machine Tools: Reliable and stable operation for machining and processing equipment.

• HVAC Systems: Improved energy efficiency and comfort control in building automation.

• Packaging Machinery: Flexible speed profiles and multi-step operation.

Programming and Control

The inverter offers extensive programming capabilities through its intuitive keypad or via PC software. Key parameters include:

• Acceleration/deceleration time settings

• PID control for process regulation

• Jump frequencies to avoid mechanical resonance

• Electronic thermal overload protection

• Customizable V/F curves and torque boost

The built-in EzSQ function allows users to create simple sequence programs without external controllers.

Safety and Compliance

The WJ200N series complies with international standards, including:

• CE Marking (EMC and LVD Directives)

• UL and cUL listed

• RoHS compliant

Safety features include:

• Safe Stop Function (STO)

• Emergency stop input

• Password protection for parameter settings

• Fault history logging with time and condition stamps

Conclusion

The Hitachi WJ200N-040HFC is a reliable, flexible, and efficient variable frequency drive designed for demanding industrial environments. Its advanced control features, robust construction, and user-friendly interface make it an excellent choice for both simple and complex motor control applications. Whether used in water treatment, material handling, or manufacturing processes, this inverter delivers performance, energy savings, and peace of mind.