When The Function Is Used In The Q Compatible Mode - Mitsubishi Electric R60AD8-G User Manual

When the function is used in the Q compatible mode

When the input signal error detection function is used in the Q compatible mode, the operation is different from that in the R
mode. The following describes only the items that have differences in operation.
Detection condition
An input signal error is detected when the analog input value is equal to or greater than the input signal error detection upper
limit value, or when the analog input value is equal to or smaller than the input signal error detection lower limit value.
Detection method
Select a detection method in 'Input signal error detection extension/input signal error detection setting' (Un\G47).
Detection method
0: Upper limit value/
lower limit value same
1: Upper limit value/
lower limit value
different
For details on the input signal error detection upper limit value and input signal error detection lower limit
value, refer to the following.
Page 185 CH1 Input signal error detection setting value/lower limit set value [Q compatible mode]
1 FUNCTIONS
46
1.7 Input Signal Error Detection Function
Description
The input signal error detection
upper limit value and input signal
error detection lower limit value
are calculated from the same input
signal error detection setting value.
Thus, the same range can be set
for A and B in the right figure.
The input signal error detection
upper limit value and input signal
error detection lower limit value
are calculated from different input
signal error detection setting
values.
Thus, different ranges can be set
for A and B in the right figure.
Input signal error detection setting value: 100 (10%)
Analog input value
Error
detected
Input signal error detection
upper limit value
Gain value
Offset value
Input signal error detection
lower limit value
Error
detected
Input signal error detection setting value for the input signal error detection upper limit value:
100 (10%)
Input signal error detection setting value for the input signal error detection lower limit value:
150 (15%)
Analog input value
Error
detected
Input signal error detection
upper limit value
Gain value
Offset value
Input signal error detection
lower limit value
Error
detected
1.6mA
A
(10.0% of 16mA)
16mA
(Gain value - Offset value)
1.6mA
B
(10.0% of 16mA)
Time
1.6mA
A
(10.0% of 16mA)
16mA
(Gain value - Offset value)
2.4mA
B
(15.0% of 16mA)
Time