76
4. Parameter description
Parameter
< Setting >
• When P.59=0, the target frequency is set by the knob on DU03B operation panel (the range of the
voltage signal given by the knob is 0~5V). The frequency range is set by P.38.
• When P.59=1, the target frequency is set by the button
and
on DU03B operation panel.
• There are 2 digits in P.141, every digit have the different meaning, relevant positions as following:
P141=
0
：
Positive Bias
1
：
Negative Bias
0
：
Negative Bias: REV Motion Disenabled
1
：
Negative Bias: REV Motion Enabled
• If you hope that the frequency is not 0Hz when the panel knob is set at 0V when setting frequency
with the knob, you can realized that by setting P.76. For example: If you hope that the frequency is
10Hz when the knob is set at 0V, you should set P.76=10, at this time the setting range of the
frequency is from 10Hz to the set value of P.38 when you turn the knob. Shown as follows:
0Hz
P.76
P.38
The set range of
the panel knob
Output
frequency
• Set the frequency of using negative bias benefits of avoids noise interference greatly. In harsh
environments, the user is advised to avoid using the drive signal which is below 1V to set the
operating frequency.
Now let’s see same examples:
Example 1: This is the most used setting. When the inverter is in ‘external mode’, ‘combined mode
2’ or ‘combined mode 4’, and the frequency is set by terminal 2-5
。
0V
5V
10V
0Hz
60Hz
30Hz
Max output
frequency
Parameter setting:
P.38 = 60Hz
Max operation frequency
P.139 = 0%
Bias adjustment
P.140 = 100% Gain adjustment
P.141 = 0 Positive Bias
P.73 = 1 Voltage signal selection
