Sanken S06-4A005-B Instruction Manual page 127

negative or is already negative. The negative modulation frequency in disturb modulation will be calculated by
subtraction.
Example 1 Analog input VIF1=0～10V
Gain frequency F1402=50Hz
2-2) Offset of modulation rate
After adjustment of modulation frequency is finished by analog input, the input modulation frequency is the two
st
frequencies (1 speed frequency and 2
addition for modulation.
However, as shown in example 1 and 2, through the polarity of gain frequency (F1402 or F1404 OR 1406), any side
set in the addition calculation or subtraction calculation will be modulated.
In this way, when the original frequency (1
the disturb modulation rate (F2237) can be modulated by setting an offset. The offset is set according to the
proportion of F2237=0~50%.
The above-mentioned proportion refers to be position of 0Hz (modulation frequency) specified by analog input. Even
though the specified analog modulation input and the gain of modulation frequency through the 0Hz are totally
changed, the change scope of modulation frequency is set by the settings in gain frequency (F1402 or F1404 or
F1406)
Example 1 Analog input VIF1=0～10V
Gain frequency F1402=＋50Hz
Disturb modulation rate F2237=50%
Analog input
nd
speed frequency) in disturb operation, they are the new values calculated by
st
speed frequency and 2
Analog input
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Example 2 Analog input VIF1=4～20 mA
Gain frequency F1402=-30Hz
Analog input
nd
speed frequency) is modulated larger or smaller,
Example2 Analog input VIF1=4～20 mA
Gain frequency F1402=-30Hz
Disturb modulation rate F2237=25%
Analog input