E6582062
6-25 6. [Advanced] How to use parameters
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The allowance is zero setting on default setting.
■ Parameter setting
■ Adjustment method
For the frequency commands to be input to the analog terminals and the output frequency
characteristics, refer to the following figure.
Analog input terminal bias adjustment (<F470>, <F472>, <F474>, <F476>, and <F478>)
To avoid the influence of noise, there is a tolerance for the minimum input amount so that the
inverter starts output after some voltage/current is applied to the analog input terminal by default
setting.
To decrease this tolerance value, increase the bias value for a corresponding terminal.
However, if the set value is too large, frequency may be output even when the frequency command
is set to 0 (zero).
Analog input terminal gain adjustment (<F471>, <F473>, <F475>, <F477>, and <F479>)
The set maximum frequency is output before voltage/current reach the maximum value to avoid
trouble such as voltage drop by default setting.
Title Parameter name Adjustment range Unit Default setting
F470 RR input bias 0-255 - 128
F471 RR input gain 0-255 - 128
F472 RX input bias 0-255 - 128
F473 RX input gain 0-255 - 128
F474 II input bias 0-255 - 128
F475 II input gain 0-255 - 128
F476 AI4 input bias 0-255 - 128
F477 AI4 input gain 0-255 - 128
F478 AI5 input bias 0-255 - 128
F479 AI5 input gain 0-255 - 128
0%
0V
4mA
100%
10Vdc
20mAdc
Output frequency (Hz)
Default setting
Point 2 frequency
Large
Large
Small
Small
Frequency command signal
0
<F471>
<F473>
<F475>
<F470>
<F472>
<F474>
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