Input terminal [AI1] can be used with bipolar inputs (-10 V to 10 V) by setting Input Terminal [AI1] Po-
larity Selection (C35) to “0.”
When Input Terminal [AI1, AI2] Bias for 1st Frequency Command (F18) and Input Terminal [AI1, AI2]
Bias Analog Input for 1st Frequency Command (C50) are both set to “0,” the command becomes sym-
metrically inverted as shown in the figure below.
Set frequency
-10 V
B point
10 V
Terminal AI1 input
Input
Terminal [AI1]
Gain (Analog Input) (C34)
Input Terminal [AI1]
Gain
（
Command
）
(C32)
When Input Terminal [AI1, AI2] Bias for 1st Frequency Command (F18) and Input Terminal [AI1, AI2]
Bias Analog Input for 1st Frequency Command (C50) are set to an arbitrary value (e.g. points A1, A2,
A3), each of the values are limited by bias values as shown in the figure below.
Set frequency
-10 V
A
2
po
int
A
3
point
10 V
Terminal AI1 input
A
1
point
Data can be input as negative polarity by analog inputs of 0 points or less by setting C40 = 10, 11 at
input terminal [AI2] (AII), C45 = 0 at input terminal [AI2] (AIV), and the bias value to a negative value.
7 Other Functions
7-43
M1 Series Standard Type User's Manual (I669)
7-3 Analog I/O Settings
7
7-3-2 Analog Input Adjustment Function
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