Energy saving operation of the inverter is represented by comparison with commercial power supply operation. For exampl

When the wiring between the inverter and motor is long, surge voltage occurs at the terminal of the motor.This surge vol

When the wire between the 400 V inverter and motor is long (20 m or longer), surge voltage occurs momentarily. This volt

This is because when the inverter restarts while the motor is coasting, an overcurrent trip can occur during the restart

When synchronously operating two motors, you need to detect speed from both motors. Each inverter is controlled based on

1. How much is the sensitivity current? When the sum of the three-phase output current of the inverter reaches approxima

An error may have occurred due to the rise of the main circuit voltage of the inverter caused by a power surge. Check fo

A 400 V inverter does not operate when 200 V is supplied to it, therefore the motor does not rotate. A 200 V motor can b

By choosing the General-purpose magnetic flux vector control and slip compensation function, you can output torque of 15

The power cannot be supplied to the control power supply separately for the FR-A024/A044 and small type FR-E500. Therefo

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FAQ within [ FREQROL-A024 ]

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Energy saving effect of inverter operation

Energy saving operation of the inverter is represented by comparison with commercial power supply operation. 　For example, to control air volume of an air co... More Details >>
- No：21622
- Release Date：2018/08/22 16:28
Inverter drive of 400 V class motor

When the wiring between the inverter and motor is long, surge voltage occurs at the terminal of the motor.This surge voltage deteriorates insulation of the m... More Details >>
- No：21926
- Release Date：2018/08/22 16:30
Surge voltage of 400 V motor

When the wire between the 400 V inverter and motor is long (20 m or longer), surge voltage occurs momentarily. This voltage is as two or more times as the DC... More Details >>
- No：21404
- Release Date：2018/08/22 16:27
What happens if reset occurs during operation?

This is because when the inverter restarts while the motor is coasting, an overcurrent trip can occur during the restart process. However, the recent types o... More Details >>
- No：21477
- Release Date：2018/08/22 16:27
Synchronous operation of two motors

When synchronously operating two motors, you need to detect speed from both motors. Each inverter is controlled based on this speed detection signal. As an e... More Details >>
- No：21540
- Release Date：2018/08/22 16:28
Output side earth (ground) fault overcurrent protection

1. How much is the sensitivity current? When the sum of the three-phase output current of the inverter reaches approximately 70% of the inverter rated curren... More Details >>
- No：21394
- Release Date：2018/08/22 16:27
"OV3" occurs during an inverter stop.

An error may have occurred due to the rise of the main circuit voltage of the inverter caused by a power surge. Check for the power supply voltage. If the ca... More Details >>
- No：21383
- Release Date：2018/08/22 16:27
Driving 200 V motor by 400 V inverter

A 400 V inverter does not operate when 200 V is supplied to it, therefore the motor does not rotate. A 200 V motor can be rotated by a 400 V inverter, howeve... More Details >>
- No：21446
- Release Date：2018/08/22 16:27
How much low-speed torque can be output?

By choosing the General-purpose magnetic flux vector control and slip compensation function, you can output torque of 150% or more at 1 Hz (200% or more at 3... More Details >>
- No：21618
- Release Date：2018/08/22 16:28
Countermeasure against the instantaneous power failure with the inverter

The power cannot be supplied to the control power supply separately for the FR-A024/A044 and small type FR-E500. Therefore, the UPS is not available. More Details >>
- No：21368
- Release Date：2018/08/22 16:27

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