Switching between high speed and low speed

As you mention, when the inverter is operated only with STF without inputting the speed command signal, the minimum frequency must be set to 10 Hz.However, a... 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 >>

FR-CV

Use the FR-HC to suppress harmonics. It also supports power supply regenerative driving.The FR-CV and FR-RC are both power supply regeneration units.The diff... More Details >>

Common terminals of control circuit

If you ground the common terminals of the control circuit, it is connected with the inverter's earthing and the inverter's noise may be input to the control ... More Details >>

FR-A500 main circuit wire types

Since the UL standard defines to "Use copper wires (rated at 75?C)", we also recommend the same type of copper wire. More Details >>

Influence by PHS

PHS does not cause the inverter to malfunction.On the contrary, if you use PHS near an inverter or motor, communication over PHS may become noisy or even get... More Details >>

0 Hz output of inverter

When the command frequency is 0 Hz, the inverter does not generate output and the voltage is 0 V. More Details >>

Current increase at motor stop

If the current increases when the motor stops under V/F control (at low speed under a light load), the motor is considered to be in the overexcitation state.... More Details >>

Fault output terminal load pattern

The fault output terminals A and C, and B and C of the power regeneration converter FR-RC are not capable of a micro load of 5 VDC±5%, 10 mA. The minimum loa... 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 >>