Emergency Stop Pushbutton Switches; A-3 Application Examples - Omron NX-SID Series User Manual

A-3 Application Examples

These examples show safety systems that use Safety Control Units.
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-3-1

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
NX-series Safety Control Unit User's Manual (Z930)
Safety device
Emergency stop pushbutton
Si2 Si3
T0 T1
KM1
S2
KM2
Stop category
0
Unit 3 (NX-SOD400)
So0 So1 So2
IOG IOG IOG
KM1 KM2
S1: Emergency stop pushbutton
S2: Reset switch
KM1 and KM2: Contactors
M: Motor
Appendix
Reset
Manual
So3
IOG
KM1
KM2
M
A - 19
A