Mitsubishi Electric MELSEC iQ-R Series User Manual page 56

Double input discrepancy detection time
Even if double input discrepancy is detected, an error does not occur during the set detection time. The logic of input signals
is evaluated and is reflected to the safety remote inputs (SA\X).
The following tables list the relation of each double input evaluation result and the double input discrepancy detection time.
The relation varies depending on a combination of double inputs.
■Combination of double inputs (NC/NC)
Input terminal state
*1
Xn Xn+1
OFF OFF
OFF ON
OFF ON
ON OFF
ON OFF
ON ON
*1 n: Even number from 0 to A
*2 m: Safety device address (even number from 0 to A) assigned to the master station
*3 When the double input discrepancy detection time has not elapsed, the input is OFF and the safety input status is ON.
■Combination of double inputs (NC/NO)
Input terminal state
*1
Xn Xn+1
OFF OFF
OFF OFF
OFF ON
ON OFF
ON ON
ON ON
*1 n: Even number from 0 to A
*2 m: Safety device address (even number from 0 to A) assigned to the master station
*3 When the double input discrepancy detection time has not elapsed, the input is OFF and the safety input status is ON.
Setting procedure
Set the double input discrepancy detection time in "Double input discrepancy detection time" from the "Parameter Processing
of Slave Station" window of the engineering tool.
For the procedure to display the "Parameter Processing of Slave Station" window, refer to the following.
Page 67 Module parameter setting procedure
7 FUNCTIONS
54
7.3 Input Diagnostic Function
Time passed after the
discrepancy state is applied
*1

< Double input discrepancy
detection time
 Double input discrepancy
detection time
< Double input discrepancy
detection time
 Double input discrepancy
detection time

Time passed after the
discrepancy state is applied
*1
< Double input discrepancy
detection time
 Double input discrepancy
detection time


< Double input discrepancy
detection time
 Double input discrepancy
detection time
Safety remote input
*2
SA\Xm SA\Xm+1
OFF OFF
OFF OFF
OFF OFF
OFF OFF
OFF OFF
ON ON
Safety remote input
*2
SA\Xm SA\Xm+1
OFF ON
OFF ON
OFF ON
ON OFF
OFF ON
OFF ON
Evaluation result of double
inputs
*2
OFF (Normal)
*3
OFF (Discrepancy)
Double input discrepancy
detection error
*3
OFF (Discrepancy)
Double input discrepancy
detection error
ON (Normal)
Evaluation result of double
inputs
*2
*3
OFF (Discrepancy)
Double input discrepancy
detection error
OFF (Normal)
ON (Normal)
*3
OFF (Discrepancy)
Double input discrepancy
detection error