Electronic thermal O/L relay setting

When using multiple motors, connect an external thermal for each of them. Set Pr.9 to "0" to disable the function. (When multiple motors are present, it is n... 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 >>

FR-E520 operation mode (Pr.79) selection

The FR-E500 manufactured before May 1998 behaved as you mentioned, and the potentiometer becomes unavailable once you set the frequency on the operation pane... More Details >>

Inverter current characteristics

In general, relationship between T (torque), K (constant), V (voltage), I (current), and F (frequency) is expressed as "T = K × (V/F) × I". Since (V/F) is co... More Details >>

Difference between FR-AU01 and AU01A

The major changes from FR-AU01 to FR-AU01A include 1. Case material and 2. Lead wire terminal process method. The FR-AU01A has a backward compatibility with ... 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 >>

Can I use a motor of which capacity is larger than the inverter capacity?

Even when the actual load (torque) is half of the motor capacity, the current output from the inverter to the motor is not reduced to the half. Therefore, it... More Details >>

Offline auto tuning

Auto tuning can be performed because the motor is one rank lower than the inverter capacity. More Details >>

Capacity selection

Select the inverter capacity so that the rated output current of inverter ? rated motor current × 1.1. More Details >>

Electromagnetic contactor

It is not recommended to start and stop the inverter with the electromagnetic contactor (MC). This will accelerate the deterioration (due to the inrush curre... More Details >>