There are two definitions of fundamental frequency:
a. The frequency corresponding to the maximum output voltage of the inverter is called the basic frequency;
b. When the output voltage of the frequency converter is equal to the rated voltage, the minimum output frequency is called the basic frequency.
The fundamental frequency is represented by fBA. In most cases, the basic frequency is equal to the rated frequency of the motor.
1. The maximum frequency is the maximum frequency that the inverter allows to output, expressed by fmax. Its specific meaning varies slightly depending on how the frequency is given:
a. When the frequency is given by the keyboard, the highest frequency means the maximum frequency that can be adjusted. That is to say, after reaching the highest frequency, even if you press the UP button again, the frequency cannot rise any further;
b. When the frequency is given through an external analog quantity, the highest frequency usually refers to the frequency corresponding to the largest given signal.
The fundamental frequency is represented by fBA. In most cases, the basic frequency is equal to the rated frequency of the motor.
2. The maximum frequency is the maximum frequency that the inverter allows to output, expressed by fmax. Its specific meaning varies slightly depending on how the frequency is given:
a. When the frequency is given by the keyboard, the highest frequency means the maximum frequency that can be adjusted. That is to say, after reaching the highest frequency, even if you press the UP button again, the frequency cannot rise any further;
b. When the frequency is given through an external analog quantity, the highest frequency usually refers to the frequency corresponding to the largest given signal.
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