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I/O Connections
AC Input Units
Output Units
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Contact output
AC Switching
Prox.
switch
main
circuit
Caution
When using Reed switch as the input contacts for AC Input Units, be sure the
!
allowable current of the switch is at least 1 A. Using switches with lower capaci-
ties may cause the contacts to fuse due to surge current.
A fuse placed in the output circuit will protect the output element, circuit board,
etc., in the event of a short circuit in the output circuit. Although some transistor
Output Units and Triac Output Units have a built-in fuse, it is recommended that
you connect an external fuse to each Output Unit for extra safety and ease of
maintenance.
Section
4-4
IN
AC input
COM
IN
AC input
COM
43
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