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Panasonic ST4 Instruction Manual
2.5 Wiring
39
NPN output
Receiver side
Emitter side
Output polarity
selection switch
Reset
PLC, etc.
Main circuit
PNP
NPN
Muting sensor
(PNP output type)
Muting sensor
(NPN output type)
Emission
halt input
Override input
Muting lamp
Muting input
A2
0V
24V
KA KB
KA
KB
24V
S-A
S+
S-B S-
S-C
S+
S-D S-
S-E
S+
+V OUT 0V
S-F S-
T2
T1
O1 O2
L2
L1
OSSD1 OSSD2
A1
X1 X2 X3
AUX2
AUX1
AUX3 AUX4
IU-
IU+
IL+ IL-
NOTE
•
KA and KB are the external devices (forcibly guided relay or magnetic
contactor).
•
When using the normally open (NO) contact switch as a
muting sensor, wire as shown right.
S-A
S+
S-B S-
2.5.2.3 Manual and automatic reset
By wiring the reset input terminals (X1, X2, and X3) as shown, you can select a manual or an
automatic reset, with or without back check.
Manual reset
When the back check circuit is
needed:
When the back check circuit is
not
needed:
X1 X2 X3
KA
KB
Reset
X1 X2 X3
Reset
Automatic reset
When the back check circuit is
needed:
When the back check circuit is
not
needed:
X1 X2 X3
KA
KB
X1 X2 X3
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