Mitsubishi Electric MELSEC iQ-R Series User Manual page 53

Single wiring function (NZ2GFS12A2-16DTE)
This function can connect output devices with single wiring.
+24V(L PW)
Load power supply
24G(L PW)
Connecting output devices with single wiring brings the safety category to SIL2/CAT2 PLd.
Diagnostic functions to detect output errors
Output errors can be detected by using the following diagnostic functions.
Diagnostic function
Output dark test function
Output read-back function
Combination of double outputs
Both terminals of double outputs are turned on only when both safety remote outputs (SA\Y) are on. The safety remote I/O
module evaluates the logic of safety remote outputs (SA\Y) and determines the state of the output terminals. The following
tables list the correspondence between each state of safety remote output (SA\Y) and output terminal for double outputs.
■Combination of double outputs (source + source connection)
Safety remote output (SA\Y0
to SA\Y3)
*1 *1
SA\Ym SA\Ym+1
OFF OFF
OFF ON
ON OFF
ON ON
*1 m: Safety device address (even number from 0 to 3) assigned to the master station
*2 n: Even number from 0 to 3
Y0
Safety remote I/O module
24G(L PW)
Description
Outputs test pulses to turn off the outputs that are on for a short time and
diagnoses the internal circuit for failure.
Reads back output results and diagnoses whether the outputs are correctly
on or off.
Output terminal state
*2 *2
Yn Yn+1
OFF OFF
OFF OFF
OFF OFF
ON ON
MC Load
Safety output status (SA\X18 to
SA\X1B)
*1 *1
SA\X18+m SA\X18+m+1
ON ON
OFF OFF
OFF OFF
ON ON
Reference
Page 57 Output dark test
function
Page 59 Output read-back
function
I/O LED status
*2 *2
Yn Yn+1
Off Off
Red Red
Red Red
Green Green
7 FUNCTIONS
7.2 Output Function
7
51