Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 334

• Set values within the practical range of the analog input and the digital output at each input range. If the
range is exceeded, the resolution and accuracy may not fall within the range of the performance
specifications. (Do not use the values in the dotted line region in the graph of voltage input characteristics.)
• Do not set the voltage over 15 V. Doing so can cause breakdown of the elements.
Current input characteristics
The following shows the list of the analog input ranges and the graph of each current input characteristic, at the current input.
(a)
digit
32767
32000
(1)
0
-768
(3)
-32000
-32768
-30 -20 0
digit: Digital output value
I: Analog input current (mA)
(a): Practical analog input range
No. Input range setting
(1) 0 to 20 mA
(2) 4 to 20 mA
(3) -20 to +20 mA
*1 Set the offset value and gain value in the user range setting within a range satisfying the following conditions. Failure to satisfy the
conditions may not result in proper A/D conversion.
Gain value  20 mA, offset value  0 mA
((Gain value) - (Offset value))  16 mA
*2 If an analog input value exceeds the range of digital output value, the digital output value is fixed to the maximum or minimum value.
Input range setting
4 to 20 mA
0 to 20 mA
-20 to +20 mA
• Set values within the practical range of the analog input and the digital output at each input range. If the
range is exceeded, the resolution and accuracy may not fall within the range of the performance
specifications. (Do not use the values in the dotted line region in the graph of current input characteristics.)
• Do not set the current over 30 mA. Doing so can cause breakdown of components.
• If a current is input from an external device into a channel set for voltage as the input type, an overvoltage
may occur and destroy components. Limit the voltage so that the external device's voltage value does not
exceed the range of -10 to +10 V.
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3.2 Specifications
(2)
4
I
+20 +30
Offset value
0 mA
4 mA
0 mA
Digital output value
Minimum
-768
-36768
Gain value Digital output
value
20 mA 0 to 32000
20 mA
20 mA -32000 to +32000
Maximum
+32767
Resolution
*2
625 nA
500 nA
625 nA