Protective functions

Protective functions against the power supply fault, overcurrent, element fault, undervoltage, and transistor thermal fault (inverter protection) are availab... More Details >>

Waveform improvement

A reference sine wave signal is generated inside the high power factor converter, and transistors are configured and PWM switching is performed in the conver... More Details >>

CC-Link

Did you purchase the FR-A7NC?If the front cover is supplied with the FR-A7NC E kit, it will fit. More Details >>

Power supply ON/OFF

1. It is OK to open MC on the output side while the inverter is operating.2. It is OK to open the input side in case of emergency stop. More Details >>

Input power supply circuit breaker

When using a motor circuit breaker, the rated current of the motor circuit breaker to use must be equal to or higher than the rated current of the circuit br... More Details >>

Speed adjustment of multiple inverters using variable resistor

You can connect up to three inverters in parallel to an external variable resistor. Refer to the figure below for a connection example. By setting parameters... More Details >>

Reversible operation of agitator

When the inverter's forward and reverse terminals are switched instantaneously, the inverter decelerates and then switches the rotation direction. It can swi... More Details >>

Availability of parameter unit

You cannot use the FR-PU04 with the FR-HC. More Details >>

Frequency misalignment at current input

It seems that calibration of the current input is slightly incorrect.By using Pr.904 (Frequency setting current bias) and Pr.905 (Gain), you can calibrate th... More Details >>

Single-phase power supply drive

For a single-phase 200 V power supply, you can use the FR-E520S series for up to 0.75 kW motor.If you use the three-phase 200 V power supply inverter with a ... More Details >>