Automatic restart after instantaneous power failure

1. Yes. The inverter cannot restart if STF and STR are turned OFF.However, on the next startup, the inverter detects coasting and restarts.2. When automatic ... More Details >>

Switching between PU and NET operation modes

Set Pr.340 (Communication startup mode selection) to "10".The operation mode can be switched between PU and NET by assigning X65 (PU-NET operation switching)... More Details >>

Running frequency

The power supply voltage may have dropped.Read the converter output voltage monitor (Pr.55 = 8) and check if Converter output voltage monitor/√2 is within th... More Details >>

Frequency setting

The parameters used when the terminal 4 is used are C5, C6, 126, and C7.Set Pr.C5 (Terminal 4 frequency setting bias frequency) while feeding a current signa... More Details >>

Switching between external operation and NET operation

You can switch between external operation and NET operation by turning ON/OFF the terminal X66 (RM). You can switch while Pr.79 (Operation mode) is set to "6... More Details >>

Frequency setting

Yes, you can set Pr.20 to 20 Hz. More Details >>

Cause of overcurrent (OC2) at constant speed

First of all, capacity reduction of the main circuit electrolytic capacitor is probable. Usually, the electrolytic capacitor is replaced every 5 years on ave... More Details >>

Auto tuning, tuning mode

The FREQROL-A200 has magnetic flux vector control in addition to the conventional V/F control. Magnetic flux vector control controls the motor with higher ac... More Details >>

Brake resistor

Use two resistors for the high-duty brake resistor FR-ABR-15K. (Connect two resistors of 18 ? in parallel.) More Details >>

RS-485 communication

Blinking of the "RUN" LED on the panel suggests that the frequency command may not be input. Create a frequency setting data as for the forward rotation comm... More Details >>