Mitsubishi Electric NZ2GFSS2 32D S1 User Manual page 97

• When a double input discrepancy detection error occurs
When the discrepancy (ON/OFF or OFF/ON) state of input terminals continues for longer than 500ms after changed from ON/
ON state, the double input discrepancy is detected and the double input discrepancy detection state is applied. The error
(double input discrepancy detection error) does not occur. In the double input discrepancy detection state, if the state of input
terminals returns to ON/ON state and the state continues for longer than 500ms, the error (double input discrepancy detection
error) occurs.
Input terminal status: X0
Input terminal status: X1
Double input discrepancy detection
(X0, X1)
Error status flag
SA\X0
SA\X1
(1) Detects a double input discrepancy.
(2) A double input discrepancy detection error occurs.
(3) SA\X0 and SA\X1 remain off.
■Operation at error detection (with discrepancy detection time not specified)
In the double input discrepancy detection state, if the state of input terminals returns to ON/ON state and the state continues
for longer than 500ms, the error (double input discrepancy detection error) occurs. For the error state, refer to the following.
Page 138 Error codes related to the safety remote I/O module
The corresponding input points are turned off when the discrepancy state of inputs occurs.
For the NZ2GFSS2-8D-S1 or NZ2GFSS2-16DTE-S1, when an error occurs for all the input points due to the
input dark test error or double input discrepancy detection error and the input function cannot be performed
anymore, an error state of I/O data error (010BH) is applied. However, when a minor error of double input
discrepancy detection error occurs while "1: Use" is set for the parameter "Double input discrepancy auto
recovery setting", the input function may be recovered. Thus, an error of I/O data error (error code 010BH)
does not occur even though the error occurs for all the input points.
500ms
(1)
Both OFF
500ms
(2)
(3)
8.3 Input Diagnostic Function
8
8 FUNCTIONS
95