Panasonic AFPXHEAD4, User Manual

Page: 64 / 76

6.1 What to Do If an Error Occurs (Analog Input)
6.1.1 Failure in Reading Analog Input Data
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Situation
There is a failure in reading analog input data.
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Solution
1.
Check again that I/O allocations are correct.
2.
Check again the connections of the terminal block.
6.1.2 Unstable Analog Input Values
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Situation
The analog input value is not stable.
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Solution
1.
Check that a twisted pair shield wire is used and that the wire is properly shielded.
2.
Check that the analog input wiring is not placed close to AC lines or high-tension lines or
bundled with the lines.
3.
Check that there are no power lines, high-tension lines, high-capacity relays, or noise-
generating equipment, such as inverters, close to the analog input unit.
4.
Check that the voltage or current for the range setting is set correctly.
6.1.3 No Proper Conversion Values Obtained with Current Input
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Situation
Proper conversion values cannot be obtained with current input.
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Solution
1.
Check again the connections of the terminal block.
2.
Check again the connections of the output equipment.
3.
Check that the range setting is the current mode.
6.1 What to Do If an Error Occurs (Analog Input)
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