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5.4 Wiring
5.4.1 Precautions for safety devices and wiring
5
SETTINGS AND PROCEDURES BEFORE
OPERATION
(9) Safety stop and function stop
When using safety relay module, ON/OFF operation is made with the function stop
according to control target. In this case, use it together with safety stop.
Since only function stop may not stop the system, not doing so may cause a
malfunction.
Connect safety devices to X0 and X1 sides and cut off the output on control target
side.
Figure 5.18 Safety stop and function stop
Safety switch
Control target
General relay
RY
Control part
Programmable
controller,
controller
Z00
Z01
Z10
Z11
Z20
Z21
Internal
circuit
M
Function
stop
Safety
stop
Safety relay module
X1
X0
COM
X0
X1
COM