"Err" displayed at power-ON

This error is displayed when the inverter and operation panel FR-PU04 cannot communicate with each other correctly or the reset signal remains ON. Therefore,... More Details >>

Connecting operation panel to enclosure

To connect the operation panel to the enclosure, use the parameter unit connection cable FR-CB201, FR-CB203, or FR-CB205. The maximum cable length is 5 m. No... More Details >>

Countermeasure against the fault occurrence

When a CC-Link communication fault occurs, the option error (OP3) occurs on the inverter and the output is shut off, and the motor starts coasting. When usin... More Details >>

Energy saving and power supply capacity of inverter

Energy saving is achieved by switching from the commercial power supply to the inverter to operate the motor. When the inverter reduces motor speed, it also... More Details >>

Coasting

When the inverter output shutoff signal MRS is turned on, the output is shut off immediately without regard to setting of Pr.250. More Details >>

Current measurement method

When measuring current, if you open the output side while current is flowing on the input side, high voltage is induced and dielectric breakdown may occur wi... More Details >>

Thermal protection

Providing thermal protection is better for your safety. When the brake transistor explodes, the brake transistor alarm (E.BE) is output. Consider a counterme... More Details >>

Using FR-A540 inverter on CC-Link

Answer to question 1 When the CC-Link option goes faulty, OPT (option error) occurs and the inverter's fault output is triggered. When communication is lost ... More Details >>

Communication EEPROM write selection (Pr.342)

They are cleared by the RES signal from the external terminals or inverter reset from the communication. More Details >>

EEPROM writing with the communication option

The writing from the parameter unit or operation panel is always ROM write regardless of the setting value of Pr.342. More Details >>