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4 Installation and Wiring
NX-series Digital I/O Unit User’s Manual (W521)
4-4 Wiring Examples
4
4-4-1 Wiring the Input Units
z Contact Output
z AC Switching
If you use reed switches for the input contacts for AC Input Units, use switches with an allow-
able current of 1 A or greater. If the capacity of the reed switches is too low, inrush current may
fuse the contacts.
Wiring to the AC Input Units
C
IN
AC Input Unit
Proximity
switch
main circuit