Input phase loss protection

The initial value of Pr.872 is set to "1" (Valid) because the A701 have regeneration unit built-in and an overvoltage may occur when the regenerative operati... More Details >>

Communication specifications for connection of multiple inverters

Use the RS485 terminal for the multiple communication of the A series/F series inverters.* Communication with the PU connector is only one-to-one connection. More Details >>

FR-FS2

The description has been deleted because there is no industrial pressure ventilation fan that can be used for the FR-FS2, due to the production termination o... More Details >>

FR-A800

Position control is available under vector control with an encoder. Under PM sensorless vector control in combination with a MM-CF motor, simple positioning ... More Details >>

Brake sequence function

The value of Pr.20 (Acceleration/deceleration standard frequency) is corresponding to 1 s. (Initial value: 60 Hz) More Details >>

Resetting inverter after restoring from power failure

When the programmable controller power is turned OFF while the inverter is in the PLC link operation mode, a communication error occurs and the inverter trip... More Details >>

Speed fluctuation

I use the dedicated motor SF-VR with the same capacity as the inverter. 1. Load fluctuationSpeed fluctuation ratio with the load fluctuation 0 to 100% is:Wit... More Details >>

Energy saving and power supply capacity of inverter

Energy saving is achieved by switching from the commercial power supply to the inverter to operate the motor. When the inverter reduces motor speed, it also... 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 >>

Comparison with FR-A200E

In addition to speed control, you can also select torque control as well as you can perform position control using an option. The speed control range is as l... More Details >>