Inovance MD500T75G - Page 117

MD500 User Manual 7. Description of Parameters
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Analog Input
2. AI1 (0 to 10 V voltage input)
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4. AI3 (-10 to 10 V voltage input)
The frequency reference is entered from an analog input (AI) terminal. To input the frequency reference from an AI terminal, do as
follows:
Steps Related Parameters Descriptions
1. Set the AI curve.
Set the correspondence
relationship between the AI
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corresponding percentage.
F4-13 to F4-16 Set AI curve 1.
F4-18 to F4-21 Set AI curve 2.
F4-23 to F4-27 Set AI curve 3.
A6-00 to A6-07 Set AI curve 4.
A6-08 to A6-15 Set AI curve 5.
F4-34 (Selection when AI lower
than min. input setting)
When an analog input is used as the frequency reference
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corresponds to the value of F0-10 (max. frequency).
2. Select a proper curve
for the AI terminal.
F4-33 (AI curve selection) You can select any AI curve for the AI terminal.
Generally, use the default value F4-33 = 321. That is,
select curve 1 for AI1, curve 2 for AI2 and curve 3 for AI3.
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3. Select a proper AI terminal
as the main frequency
reference setting channel.
F0-03 (Main frequency reference
setting channel selection)
F0-03 = 2 Select AI1.
F0-03 = 3 Select AI2.
F0-03 = 4 Select AI3.
F4-40 (AI2 signal selection) F4-40 = 0 (default) AI2 is voltage input.
F4-40 = 1 AI2 is current input.
Step 1: Set the AI curve.
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the target frequency. Three of the curves have a linear (point-point) correspondence, and two have four-point correspondence. You
can set the curves by using function codes F4-13 to F4-27 and function codes in group A6, and select curves for AI1, AI2 and AI3 in
function code F4-33.
Here takes the AI curve 1 as an example to describe how to set the AI curve. The AI curve 1 is set by F4-13 to F4-16.
Figure 7-13 Set the AI curve 1
Corresponding percentage
(frequency)
100.0%
0.0%
0.00 V
(0.00 mA)
F4-16
F4-14
F4-13
10.00 V
(20 mA)
F4-15
AI
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