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3 Part Names and Functions
NX-series Safety Control Unit User’s Manual (Z930)
3-3 Safety I/O Functions
3
3-3-1 Safety Input Functions
Devices with Semiconductor Outputs
The signal from a device with a semiconductor output, such as a light curtain, is input to a safety
input terminal (Si).
Example of Sysmac Studio Settings
Si0
Si1
IOV
IOG
IOV
IOG
24 VDC
0 V
NX bus connection
Safety Light Curtain
Additional I/O Power Supply Unit
or Communications Coupler Unit
NX-SI
Emitter
Receiver
Brown
Blue
Brown
Blue
Black
White
Control output 1 (OSSD 1)
Control output 2 (OSSD 2)