External frequency selection

When all of the multi-speed input signals are turned OFF during external operation, the output frequency conforms to the external analog frequency command (i... More Details >>

Inverter selection when driving multiple motors

When driving multiple motors with a single inverter, determine the inverter capacity in one of the following two methods:1. When driving multiple motors conn... More Details >>

Using both types of power factor improving reactors

Yes.By using both types of reactors together, you can reduce the outgoing harmonic current.For examples of harmonics reduction, refer to the value in the har... More Details >>

Built-in potentiometer and current input switching control

For setting the frequency, you cannot switch between the operation panel potentiometer and current input from an external source.To switch between the extern... More Details >>

Using existing potentiometer by replacing inverter

It is OK if the resistance value of the speed varying potentiometer's resistance is 2 kΩ.Use the speed varying potentiometers used with the existing inverter... More Details >>

Rated capacity related to harmonic suppression guidelines

The usual inverter input current is determined not by the inverter capacity but by the motor capacity (motor load).Therefore, the input side capacity is not ... More Details >>

External thermal overheat

Take the following countermeasure:1. If the thermal trips in low-speed operation, trips can be avoided, depending on the external thermal relay operation cha... More Details >>

Short-circuiting frequency setting terminals

You can short-circuit the terminals 10 and 2.If you are considering to perform operation at the maximum frequency, consider using the high-speed command RH o... More Details >>

Using built-in potentiometer and multi-speed together

Yes. Set Pr.79 = 3. (Input the start signal from an external source.) More Details >>

Electronic thermal O/L relay setting

Set Pr.9 to the rated current at 50 Hz or a value 1.1 times as the rated current at 60 Hz.You can specify the motor type with Pr.71 (Applied motor). For a co... More Details >>