144
FX
3UC
Series Programmable Controllers
User’s Manual - Hardware Edition
5 Input Specifications and External wiring
5.2 24V DC Input Type
5.2.5
Examples of external wiring
1.
Examples of wiring (Dedicated to sink input types only)
WIRING PRECAUTIONS
• Before cleaning or retightening terminals cut off all phases of the power supply externally.
Failure to do so may cause electric shock.
FX
3UC
-32MT/D
FX
2NC
extension block
(Dedicated to sink
input types only)
FX
3UC
-1PS-5V
+
-
COM
X000
X001
Photo-
coupler
Input
impedance
5V
24V
COM
X
0
X
1
X
2
X
3
+
-
4.3k
Ω
+
-
24V DC
Three-
wire
sensor
Input
terminal
Two-wire
proximity
sensor
FX
2N
extension block
(Dedicated to sink
input types only)
24+
X
0
X
1
X
2
X
3
*
DC/DC
converter
DC
DC
Input
terminal
* Class D grounding
The grounding resistance should be
100
Ω
or less.
Power
connector
Power
connector
Power
connector
Input
terminal
Fuse
5V
24V
DC/DC
converter
DC
DC
Photocoupler
Photocoupler
For an input device having a
parallel resistance or a
two-wire proximity switch, a
bleeder resistance may be
required.
(Refer to Subsection 5.2.4.)
Handle the power supply
circuit correctly in
accordance with Chapter
4 "Power supply
specifications and
external wiring."
Содержание FX3UC Series
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