Appendix
A - 54
NX-series Safety Control Unit User’s Manual (Z930)
Motor M stops when emergency stop pushbutton S1 is pressed.
Motor M stops when the light in the single beam safety sensor is interrupted.
A-3-11 Single Beam Safety Sensors
Application Overview
Safety category/PL Safety device Stop category Reset
Equivalent to 2/PLc
(Single Beam Safety
Sensor)
• Emergency stop pushbutton
• Single beam safety sensor
0 Manual
Wiring
Unit 2 (NX-SIH400)
Unit 3 (NX-SIH400)
Si0 Si1
T0 T1
Si2 Si3
T0 T1
KM1
KM2
S2
Si0 Si1 Si2 Si3
T0 T1 T0 T1
GND
S3
KM1 KM2
M
KM1
KM2
So0 So1 So2 So3
IOG IOG IOG IOG
S1
S1: Emergency stop pushbutton
S2: Reset switch
S3: Single beam safety sensor
KM1 and KM2: Contactors
M: Motor
24VDC
Unit 4 (NX-SOD400)
Emitter
Receiver
24V(Brown)
0V(Blue)
Test input (Pink)
Control output (Black)
Mode (Pink)
24V(Brown)
0V(Blue)
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