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Hitachi

Hitachi Industrial Equipment Systems Co.,Ltd.

High starting torque of 200% or greater achieved by sensorless vector control (when sized for heavy duty).

Example of Torque Characteristics
Example of Torque Characteristics

Integrated auto-tuning function for easy sensorless vector control realizes high torque suitable for applications requiring it such as crane hoists, lifts, elevators, etc.

Speed regulation at low-speed is greatly improved.
– Fluctuation is 1/2* compared with the previous model. –

Speed regulation at low speed has been improved to enhance process stability and precision.

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  • Frequency commanded by the inverter:0.5Hz.
  • Motor:Hitachi's standard 3-phase 5.5kW 4-Pole totally enclosed type motor.
*
WJ200: 5min-1, Previous model: 13min-1

Induction motor & Permanent magnetic motor* control with one inverter

The WJ200 inverter can drive both induction motors (IM) and permanent magnetic motors (PM). Energy conservation and miniaturization can be achieved using PM motors. Moreover, one inverter used for two types of motor.

*
corresponds more than Ver2.0

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Trip avoidance functions

Minimum time deceleration function, over-current suppress function and DC bus AVR function are incorporated. The functions reduce nuisance tripping. Improved torque limiting/current limiting function enables a load limit to protect machine and equipment.

Minimum time deceleration Function

Example of WJ200-075LF
Minimum time deceleration Function

2.3 sec. reduction of deceleration time without a braking resistor is achieved when the function is active.

Over-current Suppress Function*

Over-current Suppress Function

*
Turn off this function for lifting equipment.

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