Mitsubishi Electric R60AD8-G User Manual page 46

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 lower limit setting value" and "Input signal error detection upper limit setting
value".
Item
Input signal error detection lower limit setting value
Input signal error detection upper limit setting value
3.
Set "Input signal error detection auto-clear enable/disable setting" to "Enable" or "Disable".
In the channel where a value out of the range is set, an input signal error detection setting value range error
(error code: 1C1H) occurs.
Setting example
■Setting example of the input signal error detection
In the channel where the following values are set, an input error is detected when an analog input value exceeds 21.2mA or
falls below 0.4mA.
Item
Input range
'Input signal error detection auto-clear enable/disable setting' (Un\G302)
'CH1 Input signal error detection setting' (Un\G528)
Assign the following values in a formula to determine the input signal error detection lower limit set value and input signal error
detection upper limit set value.
• Input signal error detection lower limit value: 0.4mA
• Input signal error detection upper limit value: 21.2mA
• Offset value: 4.0mA
• Gain value: 20.0mA
For details on the calculation formula, refer to the following.
Page 43 Setting the input signal error detection upper or lower limit value
[Calculation of lower limit value]
Input signal error detection lower limit
setting value
Thus, set 'CH1 Input signal error detection lower limit set value' (Un\G529) to 225 (22.5%).
[Calculation of upper limit value]
Input signal error detection upper limit
setting value
Thus, set 'CH1 Input signal error detection upper limit set value' (Un\G530) to 75 (7.5%).
1 FUNCTIONS
44
1.7 Input Signal Error Detection Function
4.0 - 0.4
= × 1000
20.0 - 4.0
= 225 (22.5%)
21.2 - 20.0
= × 1000
20.0 - 4.0
= 75 (7.5%)
Setting range
0.0 to 25.0 (%)
Setting value
4 to 20mA
Disable (1)
Upper and lower limit detection (1)