Example 1 ： The output voltage in V/F mode is
controlled by AI.
Set a value (not zero) to b1.09 to select an analog
input to control voltage output. This function is only
valid in V/F control mode. The output frequency and
output voltage VO is completely independent of
each other. The output voltage is controlled by
analog input signal, not by the V/F curve in Group
b1,as shown in Fig.6-37.
Fig.6-37 Curve of Output voltage
Example 2 ： The offset of output voltage in V/F
mode is controlled by AI.
Set a value (not zero) to b1.10 to select an analog
input to control the offset of voltage output. As
shown in Fig.6-38.
Fig.6-38 Offset of output voltage
The output voltage corresponding to the setting
frequency in the V/F curve is V/F, then the
relationship between analog input and offset
voltage is as follows：
If analog input VAI is -10V～0V or 4mA, then the
corresponding offset voltage is –V or F. If analog
input VAI is 10V or 20mA, then the corresponding
offset voltage is V or F.
The output voltage is VO＝V/F+Vb
Note
AI offset is only valid in V/F control mode.
Note：
1. The carrier wave frequency will affect the noise
when motor running, generally the carrier wave
frequency is supposed to set as 3~5kHz. For some
special situation where require operating mutely,
the carrier wave frequency is supposed to set as
6~8kHz.
2．When set the carrier wave frequency larger than
default value, then the power of drive need to
derate 5% by every increase of 1kHz.
During deceleration, the motor’s decelerate rate
may be lower than that of drive’s output frequency
due to the load inertia. At this time, the motor will
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