I/O Circuit Diagrams - Panasonic ST4 Series Instruction Manual

2-5-2 I/O Circuit Diagrams

<Reference>
Manual / Auto reset can be selected by the wiring of the reset input terminals (X1, X2,
and X3).
<Manual reset>
In case the back check
circuit is needed
Reset
KA
KB
X1 X2 X3
<Reference>
Internal circuits of the emission halt input terminals (T1 and T2) as well as override
input terminals (O1 and O2) are switched by the output polarity selection switch.
<Controller ST4-C11>
● In case of PNP output
Main circuit
3kΩ
T1 T2
<Controller ST4-C12EX>
● In case of PNP output
Main circuit
3kΩ
T1 T2
© Panasonic Industrial Devices SUNX Co., Ltd. 2016
In case the back check
circuit is not needed
Reset
X1 X2 X3
3kΩ
O1 O2
<Auto reset>
In case the back check
circuit is needed
KA
KB
X1 X2 X3
● In case of NPN output
Main circuit
3kΩ
T1 T2
● In case of NPN output
Main circuit
3kΩ
T1 T2
Wiring
In case the back check
circuit is not needed
X1 X2 X3
3kΩ
O1 O2
33