Omron sysmac NX Series User Manual page 908

Appendices
Application Overview
Safety category/PL
Equivalent to 4/PLe
(Enable Switch)
Motor M stops when safety doors S3 and S4 are opened or key Selector switch S5 is maintenance
mode.
However, even if key selector switch S5 is set to maintenance mode, motor M will operate if enable
switch S6 is ON.
Wiring
Si0
T0
S1
Unit 3 (NX-SIH400)
Si0
T0
S3
Open
A-44
•
Emergency stop pushbutton
•
Safety limit switch
•
Key selector switch
•
Enable switch
Unit 2 (NX-SIH400)
Si1 Si2
T1 T0
KM1
S2
KM2
Si1 Si2 Si3
T1 T0 T1
S4
NX-series Safety Control Unit/Communication Control Unit User's Manual (Z395)
Safety device
Si3
T1
S5
Stop category Reset
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