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Inverters-FREQROL
FAQ within [ Inverters-FREQROL ]
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The following benefits are provided when the FR-BLF is installed on the input side or output side.Choose the side to install the FR-BLF considering these ben... More Details >>
- No:22026
- Release Date:2018/08/22 16:30
- Category: Inverters-FREQROL , Options
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Built-in regenerative resistor
For both the 200 V and 400 V classes have the built-in regenerative resistor for 0.4 K to 7.5 K.The permissible power is as follows:Capacity: Short-time perm... More Details >>
- No:22021
- Release Date:2018/08/22 16:30
- Category: Inverters-FREQROL , FREQROL-A500
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1. Changing frequency to 0 Hz(1) Set Pr.8 (Deceleration time) to 0 second.If the load is large, the stall prevention function may work to lengthen decelerati... More Details >>
- No:22019
- Release Date:2018/08/22 16:30
- Category: Inverters-FREQROL , FREQROL-E500
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Frequency misalignment at current input
It seems that calibration of the current input is slightly incorrect.By using Pr.904 (Frequency setting current bias) and Pr.905 (Gain), you can calibrate th... More Details >>
- No:22014
- Release Date:2018/08/22 16:30
- Category: Inverters-FREQROL
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Speed precision of Advanced magnetic flux vector control
The speed precision for each model is as follows:FR-K440 with PG: 1% or less of the maximum speed (3500 rpm)FR-A540 without PG (Advanced flux vector): 1% or ... More Details >>
- No:22013
- Release Date:2018/08/22 16:30
- Category: Inverters-FREQROL , FREQROL-A500
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Earth leakage detection of the inverter
To protect personnel from electric shock, it is necessary to provide the circuit with the earth leakage circuit breaker.The inverter and motor circuits also ... More Details >>
- No:22006
- Release Date:2018/08/22 16:30
- Category: Inverters-FREQROL , Peripheral devices
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The inverter does not have a function to limit the current at 0 Hz.Although it has the DC injection brake, it is intended to improve the braking capability b... More Details >>
- No:22002
- Release Date:2018/08/22 16:30
- Category: Inverters-FREQROL , FREQROL-A500
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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 >>
- No:21997
- Release Date:2018/08/22 16:30
- Category: Inverters-FREQROL
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Using both types of power factor improving reactors
Yes.By using both types of reactors together, you can reduce the outgoing harmonic current.For examples of harmonics reduction, refer to the value in the har... More Details >>
- No:21995
- Release Date:2018/08/22 16:30
- Category: Inverters-FREQROL , Options
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The surface temperature of approximately 70?C is OK.The following shows the MM-CF352 frame temperature for reference.(Actual temperature rise depends on how ... More Details >>
- No:21988
- Release Date:2018/08/22 16:30
- Category: Magnet motor drive
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