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Questions

  • No : 21413
  • Release Date : 2018/08/22 16:27
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Stall prevention operation

If current above the stall prevention level flows when the inverter starts, is the inverter prevented from raising the frequency?
Or, does it unconditionally raise the frequency to the set value?
Category : 

Answer

When the inverter start signal is input, the inverter starts outputting from the starting frequency.
And then, it gradually raises the frequency for acceleration. If the current goes higher the stall prevention level during acceleration, the inverter lowers the output frequency until the current goes below this level. When the current goes below the stall prevention level, the inverter raises the frequency again. The inverter performs acceleration by repeating these steps.
Therefore, it does not unconditionally raise the frequency to the set value.
Since the inverter may take longer than the specified acceleration time until it reaches the specified speed due to the above mentioned operation, be careful when it is used with a machine for which the traveling distance is limited.
Product Name
Inverter, magnet motor drive
Product Category
Inverter
Series
FR-A500
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