Instantaneous power failure of facili...

1. If the start signal is present when the power and communication restore, the inverter starts operation. 2. Similarly to the above, if the start signal is ... More Details >>

Speed control failure due to 20 mA fr...

It seems that there is a read error for 20 mA DC inside the inverter.Setting Pr.905 to 50 Hz while 20 mA DC is actually flowing between the terminals 4 and 5... More Details >>

Power factor improving reactor

Your understanding about the AC and DC reactors is correct. For the harmonics suppression effect obtained by using both types of reactors, refer to the table... More Details >>

Output phase loss protection error

- How to find out lost phaseMeasure the three-phase current when the error has occurred.The phase with a small (or no) phase current is lost.- Possibility of... More Details >>

Compatibility of the installation bet...

Yes. (However, since they are aligned with the small size of the FR-A200 (D), you need to use the intercompatibility attachment FR-AAT for a larger size. Att... More Details >>

Parameter unit FR-PU03

You can use it with the FR-A200 (E) and FR-A100 (E) series. (Note) Use the connection cable (option). You cannot use it with the FR-Z and FR-U series (except... More Details >>

PWM control

PWM is an acronym for Pulse Width Modulation and varies the switching pulse width of transistors.　This method creates many pulses within a single cycle of th... More Details >>

Meaning of OL display (2)

Yes. "OL" is displayed under speed control whenever the torque limit is reached without regard to the rated torque. More Details >>

Overcurrent

Frequent occurrences of OL means that the inverter is overloaded. Since the inverter can go faulty if it is constantly overloaded, you need to take a counter... More Details >>

Fault display

"E.OV3" is displayed when the voltage between the inverter terminals PN rises abnormally high while the inverter is decelerating or stopped. In this case, th... More Details >>