Bias; Analog Input Adjustment - FujiFilm FVR-Micro Instruction Manual

F18
Bias (Frequency command 1)
C50
Bias (for Frequency 1) (Bias base point)
C32, C34
Analog Input Adjustment for [12] (Gain, Gain base point)
C37, C39
Analog Input Adjustment [C1] (Gain, Gain base point)
When any analog input for frequency command 1 (F01) is used, it is possible to define the
relationship between the analog input and the reference frequency by multiplying the gain and
adding the bias specified by F18.
As shown in the graph below, the relationship between the analog input and the reference
frequency specified by frequency command 1 is determined by points "A" and "B." Point "A" is
defined by the combination of the bias (F18) and its base point (C50); Point "B," by the
combination of the gain (C32, C37) and its base point (C34, C39).
The combination of C32 and C34 applies to terminal [12] and that of C37 and C39, to terminal
[C1].
Configure the bias (F18) and gain (C32, C37), assuming the maximum frequency as 100%, and
the bias base point (C50) and gain base point (C34, C39), assuming the full scale (10
VDC or 20 mA DC) of analog input as 100%.
• The analog input less than the bias base point (C50) is limited by the bias value(F18).
• Specifying that the data of the bias base point (C50) is equal to or greater than that of
each gain base point (C34, C39) will be interpreted as invalid, so the inverter will
reset the reference frequency to 0 Hz.
Example: Setting the bias, gain and their base points when the reference frequency 0 to 100%
follows the analog input of 1 to 5 VDC to terminal [12] (in frequency command 1).
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