EC590
Function parameters description
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41
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42
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EC590
Function parameters description
Analog InputAI1 (0 to 10 V voltage input)AI2 (0 to 10 V voltage input or 0 to 20 mA current in-
put, by F4-40)Keyboard potentiometer (-10 to 10 V voltage input)Frequency reference is entered
from an analog input
(AI) terminal. To input frequency reference from an AI terminal, do as follows:
Step 1: Set AI curve.
The AC drive provides five curves to indicate mapping relationship between the input voltage
entered from AI1, AI2 or Keyboard potentiometer and target frequency. Three of the curves have
a linear (point-point) correspondence, and two have four-point correspondence. You can set curves
via parameters F4-13 to F4-27 and parameters in group A6, and select curves for AI1, AI2 and Key
-
board potentiometer in F4-33.Here takes AI curve 1 as an example to describe how to set AI curve.
AI curve 1 is set by F4-13 to F4-16.
Figure 5-6 Set AI curve 1
■
Corresponding percentage
(frequency)
AI1
100
%
F4-16
0
.
0
%
F4-14
0.00V
(
0.00mA)
F4-13
10
.
00V
(
20.00mA)
F4-15
F4-13 to F4-16: These five parameters set relationship between analog input and corresponding
percentage.
●
When analog input voltage exceeds the value of F4-15, the AC drive uses the maximum value.
●
When analog input voltage is below the value of F4-13, the AC drive uses the minimum value or
0.0%, determined by the setting of F4-34.
Function Code
Parameter Name
Default
F4-13
AI curve 1 min. Input
Setting Range
0.00 V
0.00 V to F4-15
F0-10
Corresponding percentage of AI curve 1 min. Input
0.0%
-
100.00% to 100.0%
F4-15
AI curve 1 max. Input
10.00 V
F4-13 to 10.00 V
F4-16
Corresponding percentage of AI curve 1 max. Input
100
.
0
%
-
100.00% to 100.0%
Note
When an AI terminal is used for input of frequency reference, 100% of voltage/
current input corresponds to the value of F0-10 (max. frequency). If analog input
is current, 1 mA current is equal to 0.5 V voltage.
F4-18 to F4-21 and F4-3 to F4-26 define AI curve 2 and AI curve 3, respectively. AI curve 2 and
AI curve 3 have the same function and usage as AI curve 1 does. Refer to
step
1
:
setAIcurve
.
Figure 5
-
7 Set AI curve 2
Corresponding
percentage
AI2
80.0
%
F4-21
0
.
0
%
F4-19
(
4mA)
F4-18
(
20mA)
F4-20
20.0%
40.0%
60.0%
0.00 2.00 4.00 6.00 8.00 10.00 V/mA
Function Code
Parameter Name
Default
F4-18
AI curve 2 min. Input
Setting Range
0.00 V
0.00 V to F4-20
F4-19
Corresponding percentage of AI curve 2 min. Input
0.0%
-
100.00% to 100.0%
F4-20
Ai2 curve max. Input
10.00 V
F4-18 to 10.00 V
F4-21
Corresponding percentage of AI curve 2 max. Input
100
.
0
%
-
100.00% to 100.0%
F4-23
AI curve 3 min. Input
0.00 V
0.00 V to F4-25
F4-24
Corresponding percentage of AI curve 3 min. Input
0.0%
-
100.00% to 100.0%
F4-25
AI curve 3 max. Input
10.00 V
F4-23 to 10.00 V
F4-26
Corresponding percentage of AI curve 3 max. Input
100
.
0
%
-
100.00% to 100.0%
A6-00 to A6-15 define AI curve 4 and AI curve 5, which have the similar function of AI curve 1
to AI curve 3. AI curve 1 to AI curve 3 are linear correspondence and AI curve 4 and AI curve 5 are
four-point correspondence.
Figure 5
-
8 Set AI curve 4 and AI curve 5