Mitsubishi FX3UC SERIES User Manual page 150

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