Mitsubishi Electric NZ2GFSS2 32D S1 User Manual page 101

Double input discrepancy auto recovery function
When a double input discrepancy detection error has occurred, removing the error factor recovers the module into the normal
state automatically. By enabling this function, the reset operation of the safety remote I/O module to reset errors is not
required. When this function is enabled and a double input discrepancy is detected, the error state is applied to the safety
remote I/O module. For details on the error state, refer to the following.
Page 138 Error codes related to the safety remote I/O module
■Auto recovery timing
To clear a double input discrepancy detection error, turning off both of the actual input signals is required. The following figure
shows the timing of when the module is automatically recovered from a double input discrepancy detection error.
Auto recovery function after
double input discrepancy
enabled signal
X0
Actual terminal input
X1
SA\X0
SA\X1
Double input discrepancy detection
(X0, X1)
(1) Both SA\X0 and SA\X1 turn off when discrepancy is detected.
(2) A double input discrepancy detection error occurs.
(3) The auto recovery is not performed even though both X0 and X1 turn on.
(4) The auto recovery is performed when both X0 and X1 turn off.
Double input
discrepancy
detection time
(2) (3)
(1)
(4)
8 FUNCTIONS
8.3 Input Diagnostic Function
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