Shielded wiring of external speed setting potentiometer

Grounding can often get dirty due to influence from the inverter main circuit switching. Therefore, when the potentiometer shielded wire is connected to the ... More Details >>

Influence on inverter at motor coasts to stop

An induction motor does not act as a power generator unless voltage is applied to it.Therefore, just rotating due to coasting does not affect the inverter. More Details >>

When controlling motor with brake by inverter

Use the RUN signal to turn ON and OFF the brake.Using the MRS (output shutoff) signal to turn ON the brake shuts off the inverter's output and reduces influe... More Details >>

Reversible operation of agitator

When the inverter's forward and reverse terminals are switched instantaneously, the inverter decelerates and then switches the rotation direction. It can swi... More Details >>

Installing frequency setting potentiometer

When you are inputting analog signals, install the potentiometer within 30 m from the inverter. 　(Refer to "Precaution on Selection and Operation" on the cat... More Details >>

Frequency display deviation

If you are using an external VR, influence by noise is probable.Setting Pr.74 (Input filter time constant) to a higher value stabilizes the frequency command... More Details >>

Insulation level of the MM-EFS

F class (155 deg C) More Details >>

Switching time of the FR-A800 control

20 ms or less is required to switch the control with the MC signal. More Details >>

Load characteristics fault detection

It is based on the motor rated torque. More Details >>

FR Configurator2

Vector control cannot be selected unless Pr.862 is set to 1. (Only the first motor is supported in the motor setting of FR Configurator2.) More Details >>