Frequency does not rise with blower

Our suggestion is to adjust the following parameters:1. Set Pr.14 = 0. If the V/F pattern for variable-torque load (Pr.14 = 1) is used, the current may incre... More Details >>

Switching from star-delta operation

It is probable that the torque is insufficient because the load characteristics and inverter output characteristics do not match and the output current value... More Details >>

Second deceleration time setting

Your suggestion is fine, but note that deceleration stop is naturally not available in case of an inverter error.In addition, considering regenerative power,... More Details >>

Real sensorless vector control

The FR-A700 supports Real sensorless vector control.　　 More Details >>

Difference from general-purpose inverter

While the inverter uses open-loop (V/F) control, it uses semi-closed loop vector control (constant current control). This enables output of stable torque esp... More Details >>

What functions are added by upgrading?

The following functions are added by upgrading: - Slip compensation function- Serial communication function- Frequency jump- 15-speed operation- Zero current... More Details >>

Can a brake resistor or brake unit be connected?

You can connect them to the FR-A024 inverter 0.4 to 3.7K. (You cannot connect them to 0.1K and 0.2K.)Available brake resistor options include the FR-ABR high... More Details >>

Plug-in option

A plug-in option cannot be installed on the FREQROL-A024 series. If you need a plug-in option's function, use other series of inverters such as the FREQROL-A... More Details >>

Amount of heat generated

The following amount of heat is generated under the 100% load. (The same amount for both the 200 V and 400 V classes. The amount of heat generated by the bui... More Details >>

Torque limit

There is no setting to disable it, but setting a high torque limit level such as 400 % can disable the limit. More Details >>