Fuji Electric FRENIC-ECO - Analog Input Adjustment for [12] (Gain, Gain Reference Point); Analog Input Adjustment for [C1] (Gain, Gain Reference Point); Analog Input Adjustment for [V2] (Gain, Gain Reference Point); Bias, Bias Reference Point (Frequency Command 1)

5-40
F18, C50
C32, C34
C37, C39
C42, C44
Bias, Bias Reference Point (Frequency command 1)
Analog Input Adjustment for [12] (Gain, Gain reference point)
Analog Input Adjustment for [C1] (Gain, Gain reference point)
Analog Input Adjustment for [V2] (Gain, Gain reference 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 reference point (C50); Point B, by the
combination of the gain (C32, C37 or C42) and its reference point (C34, C39 or C44).
The combination of C32 and C34 applies to terminal [12], that of C37 and C39, to [C1], and that of
C42 and C44, to [V2].
Configure the bias (F18) and gain (C32, C37 or C42), assuming the maximum frequency as
100%, and the bias reference point (C50) and gain reference point (C34, C39 or C44), assuming
the full scale (10 VDC or 20 mA DC) of analog input as 100%.
• The analog input less than the bias reference point (C50) is limited by the bias value
(F18)
• Specifying that the data of the bias reference point (C50) is equal to or greater than
that of each gain reference point (C34, C39 or C44) will be interpreted as invalid, so
the inverter will reset the reference frequency to 0 Hz.
Example:
Setting the bias, gain and its reference points when the reference frequency 0 to 100%
follows the analog input of 1 to 5 VDC to terminal [12] (in frequency command 1).