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Factory Automation

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  • No : 21820
  • Release Date : 2018/08/22 16:29
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Running frequency

When I increase the running frequency, the display lamp momentarily turns off and then turns on and the inverter accelerates again.
The running frequency is set to 60 Hz and the lamp turns off at around 30 Hz.
As peripheral devices, a power factor improving power AC reactor and high-duty brake resistor FR-ABR are used.
The inverter operates normally between 0 and 30 Hz.
After clearing all parameters and putting the inverter in the PU mode, commands in the PU mode run out and the inverter stops. It resumes operation when a new command is given.
Category : 

Answer

The power supply voltage may have dropped.
Read the converter output voltage monitor (Pr.55 = 8) and check if Converter output voltage monitor/√2 is within the rated input voltage range of the inverter. (* Connecting the power factor improving AC reactor causes the voltage to drop by 6%.)

If the power supply voltage has not dropped, check if the high-duty brake resistor FR-ABR connection and the parameter settings are corrected.
Product Name
Inverter, magnet motor drive
Product Category
Inverter
Series
FR-E700, FR-D700, FR-F700PJ, FR-A700, FR-F700P, FR-F700

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