Omron sysmac NX Series User Manual page 894

Appendices
A-4 Application Examples
Refer to the NX-series Safety Control Unit Instructions Reference Manual (Cat. No. Z931) for details
on the instructions that are used in each example.
A-4-1
Emergency Stop Pushbutton Switches
Application Overview
Safety category/PL
Equivalent to 4/PLe
Motor M stops when emergency stop pushbutton S1 is pressed.
Wiring
Unit 2 (NX-SIH400)
Si1
Si0
T0 T1
S1
A-30
Safety device
Emergency stop pushbutton
Si2 Si3
T0 T1
KM1
S2
KM2
NX-series Safety Control Unit/Communication Control Unit User's Manual (Z395)
Stop category
Unit 3 (NX-SOD400)
So0 So1 So2
IOG IOG IOG
KM1 KM2
S1: Emergency stop pushbutton
S2: Reset switch
KM1, KM2: Contactors
M: Motor
Reset
0 Manual
So3
IOG
KM1
KM2
M