Omron NX-SID800

A - 33
Appendix
NX-series Safety Control Unit User’s Manual (Z930)
A-3 Application Examples
A
A-3-5 Enable Switches
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.
A-3-5 Enable Switches
Application Overview
Safety category/PL Safety device Stop category Reset
Equivalent to 4/PLe
(Enable Switch)
• Emergency stop pushbutton
• Safety limit switch
• Key selector switch
• Enable switch
0 Manual
Wiring
OPEN
Unit 2 (NX-SIH400)
Unit 3 (NX-SIH400)
KM1
KM2
S2
Si0 Si1 Si2 Si3
T0 T1 T0 T1
S5
Si0 Si1 Si2 Si3
T0 T1 T0 T1
S3
S4
S1