Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 59

Setting the input signal error detection upper or lower limit setting value
For the input signal error upper and lower values, set the ratio to the analog input range width (gain value - offset value) in
increments of 0.1%.
Item
Input signal error detection upper limit setting value
Input signal error detection lower limit setting value
■Input signal error detection upper limit setting value
This value is calculated by adding "Analog input range width (Gain value - Offset value) Input signal error detection upper limit
set value (%)" to the gain value. Only a value which is equal to or greater than the gain value can be set.
To calculate the input signal error detection upper limit set value based on the input signal error detection upper limit value,
use the following formula.
Input signal error detection
=
upper limit setting value
■Input signal error detection lower limit setting value
This value is calculated by subtracting "Analog input range width (Gain value - Offset value) Input signal error detection lower
limit set value (%)" from the lower limit value of each range. Only the value which is equal to or smaller than the lower limit
value of the range can be set.
To calculate the input signal error detection lower limit set value based on the input signal error detection lower limit value, use
the following formula.
Input signal error detection
=
lower limit setting value
• When Input signal error detection setting is set to Upper limit detection, the input signal error detection lower
setting value is disabled.
• When Input signal error detection setting is set to Lower limit detection, the input signal error detection
upper limit setting value is disabled.
The following table lists the lower limit value, offset value, and gain value for each range.
Input range
Voltage 0 to 10 V
0 to 5 V
1 to 5 V
-10 to +10 V
User range setting
Current 0 to 20 mA
4 to 20 mA
-20 to +20 mA
User range setting
Setting procedure
1.
Select a detection method in "Input signal error detection setting".
[Navigation window]  [Parameter]  [Module Information]  Module model name  [Module Parameter] 
[Application setting]  [Input signal error detection function]
2.
Set values for Input signal error detection upper and lower limit setting values.
Item
Input signal error detection upper limit setting value
Input signal error detection lower limit setting value
Input signal error detection upper limit value - Gain value of each range
Gain value of each range - Offset value of each range
Lower limit value of each range - Input signal error detection lower limit value
Gain value of each range - Offset value of each range
Lower limit value
0 V
0 V
1 V
-10 V
Analog input value equivalent to the
digital output value of -32000
0 mA
4 mA
-20 mA
Analog input value equivalent to the
digital output value of -32000
Setting range
0 to 250 (0 to 25.0%)
Offset value
0 V
0 V
1 V
0 V
Analog input value set as an offset
value
0 mA
4 mA
0 mA
Analog input value set as an offset
value
Setting range
0 to 250 (0.0 to 25.0%)
× 1000
× 1000
Gain value
10 V
5 V
5 V
10 V
Analog input value set as a gain
value
20 mA
20 mA
20 mA
Analog input value set as a gain
value
1 FX5-4AD
1.4 Functions
1
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