10 FUNCTIONS
10.3 Safety Output Function
165
10
10.3
Safety Output Function
Output double wiring function
This function turns output wiring into double wiring. With double wiring, output signals on each side are verified so that when
one side fails, safety outputs can be turned off.
Double wiring combination
For double wiring, perform wiring on a terminal with the same terminal number in both the RY40PT5B (Main) and the
RY40PT5B (Sub).
Ex.
For example, to perform double wiring on the terminal with terminal number Y00 in the RY40PT5B (Main), the terminal with
terminal number Y00 in the RY40PT5B (Sub) is used.
Diagnostic functions to detect output errors
An output error can be detected with the following diagnostic functions.
Double output combination
When the safety output (SA\Y
) is ON, a double output turns on the corresponding output terminals in both the RY40PT5B
(Main) and the RY40PT5B (Sub).
Diagnostic function
Diagnostics
Reference
Output dark test function
Outputs test pulses to turn off the outputs that are on and diagnoses contacts
including external devices for failure.
Page 177 Output dark test function
Output read-back function
Reads back the output results for diagnosis to see if the output signals are
output correctly.
Page 179 Output read-back function
Safety output (SA\Y
)
Output terminal status
Y
in the RY40PT5B (Main)
Y
in the RY40PT5B (Sub)
OFF
OFF
OFF
ON
ON
ON
RY40PT5B(Main)
RY40PT5B(Sub)
Y0
COM
0V
Y0
COM
0V
24VDC
24VDC
Electromagnetic
contactor
Electromagnetic
contactor
Summary of Contents for MELSEC iQ-RX40NC6B
Page 1: ...MELSEC iQ R I O Module With Diagnostic Functions User s Manual Application RX40NC6B RY40PT5B ...
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Page 125: ...4 OVERVIEW 123 4 MEMO ...
Page 191: ...12 MAINTENANCE AND INSPECTION 189 12 MEMO ...
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