47
[Parameter P23: PWM signal averaging]
The inverter measures and calculates the ON time and OFF time per PWM cycle, and
recognizes the results as the frequency command value.
This parameter is used to stabilize the frequency command value recognized by the inverter.
For example, if the setting data is set to "5", the inverter will average five successive
frequency command values, and will recognize the results as the final frequency command
value.
∗
The frequency command value will stabilize when the setting value is increased, but the
response speed will drop.
[Parameter P24: PWM signal cycle]
The cycle of the input PWM signal is set with this parameter.
Set a value within
±
12.5% of the PWM signal cycle to be input.
∗
For example, if the PWM signal period input is 100ms, the setting value will be between
88 and 112.
Note 1)
The output frequency is the "0V stop or minimum frequency" when the PWM signal
is in "the state without ON", and is the "maximum frequency" when the PWM signal
is in "the state without OFF ".
Note 2)
The linearity of the output frequency in respect to the input signal will drop near the
minimum frequency or near the maximum frequency. Avoid using this for
applications requiring precise frequency control.
Setting data range (times)
1 to 100
Setting data range (ms)
1 to 999
