Mitsubishi Electric R60AD8-G User Manual page 329

Current input characteristics
The following are list of analog input ranges for current input and graphs for each current input characteristics.
(a)
digit
32767
32000
(2)
(1)
0
4
-768
-32000
-32768
-30 -20 0 20
digit: Digital operation value
I: Analog input current (mA)
(a): Practical analog input range
No. Input range setting
(1) 4 to 20mA
(2) 0 to 20mA
(3) 4 to 20mA (extended mode)
 User range setting
*1 Set the user range setting offset value and gain value in a range meeting the following conditions. If one of the following conditions is not
met, A/D conversion may not be achieved correctly.
Gain value  20mA, Offset value  0mA
((Gain value) - (Offset value))  12.2mA
*2 A maximum resolution in the user range setting
*3 When an analog input exceeds the digital operation value range, its digital operation value is fixed to the maximum or minimum.
Input range setting
4 to 20mA
0 to 20mA
4 to 20mA (extended mode)
User range setting
• Use the input range within the practical analog input range and practical digital output range. If the input
range exceeds the ranges above, the resolution and accuracy may not meet the performance
specifications. (Avoid using the range within the dotted lines on the current input characteristics graphs.)
• Do not input a value 30mA or higher. Doing so may damage the elements.
digit
32767
32000
0
-8000
-8768
-32000
I
-32768
30 -30 -20
Offset value Gain value
4mA 20mA
0mA 20mA
4mA 20mA
*1 *1
Digital operation value
Minimum
-768
-8768
-32768
(a)
(3)
4
I
0 20 30
20.384
Digital operation value
0 to 32000
-8000 to 32767
-32000 to 32000
Maximum
32767
32767
32767
Appendix 10 I/O Conversion Characteristics
*3
Resolution
500.0nA
625.0nA
500.0nA
*2
190.6nA
APPX
327
A