Offline auto tuning

Leave the setting of Pr.96 as "3". It indicates that auto tuning has been completed and the motor constant has been read. When it is changed unnecessarily, t... More Details >>

Load current limit of inverter

You can input current from the terminal AM of the inverter to the programmable controller (for A/D conversion) and control the speed with the software of the... More Details >>

Built-in reactor

The reactor built in the FREQROL-A201 series is intended to stabilize operation of the converter circuit and differs from the FR-BAL. Note that when performi... More Details >>

Countermeasure against error

The inverter alarm "OV3" occurs when the main circuit DC voltage inside the inverter goes higher than the preset value due to the regenerative power returned... More Details >>

Items controllable via CC-Link

1. Not all items can be controlled. 　　- Functions that cannot be controlled JOG, AU, CS, OH, X10, X11, X12, and X16 functions (Other functions can be control... More Details >>

Auxiliary input power supply

If you connect two frequency setting potentiometers to the terminals 5 and 10, the permissible current of 10 mA is exceeded, and you need to install 2 KΩ res... More Details >>

Torque characteristic at low speed

Torque is not guaranteed for slower than 0.5 Hz. Therefore, no data for this is published. Also, no torque is generated at 0 Hz. More Details >>

Countermeasure against noise and leakage current during low-noise operation

The following two major countermeasures against noise are available: - Keep the noise source and partner device apart from each other.- Install a noise filte... More Details >>

Can I use it with the single-phase power supply?

You can use the inverter with the single-phase 200 V power supply. However, since ripple current flowing through the capacitor increases and the converter an... More Details >>

Output frequency monitor value

When running the inverter after auto tuning, the frequency setting value is increased by the amount of the motor slippage, resulting in a higher monitor valu... More Details >>