Mitsubishi FX3UC SERIES User Manual page 139

FX Series Programmable Controllers
3UC
User's Manual - Hardware Edition
• Example of the FX
Special adaptor
(Alalog)
FX -
3UC
MT/DSS
FX /FX
2NC 3UC
Special function
block
FX - EX-DS,
2NC
FX -16EX-T-DS
2NC
FX -1PS-5V
3UC
FX Output
2NC
extension block
FX -CNV-IF
2NC
or
FX -1PS-5V
3UC
FX - EX-ES/UL
2N
2. Caution on connecting the minus line (when using two or more external DC power supplies)
When supplying power from two or more power supply units due to insufficient capacity of each DC power
supply unit, connect the minus line of each power supply unit as shown in the figure below.
Special adaptor
(Analog)
+
Fuse
24V DC
- MT/DSS
3UC
*3
+
-
Class D
grounding *1
*3
+
-
Power
*3 connector
+
-
Power
+ crossover
connector
-
Fuse
*3
+
-
*2
*3
+
-
Main unit
- -
+
4 Power Supply Specifications and External wiring
24V DC
Circuit Protector
Power supply ON
PL
MC
MC
Emergency
stop
MC MC
24V DC 24V DC
-
Power supply for loads to
be connected to PLC
output terminals
As for the details of emergency stop operation, see "DESIGN
PRECAUTIONS" at "Safety Precautions" field.
Communication cable
FX -CNV-IF
2NC
FX /FX /FX Special
0N 2N 3U
function units/blocks
-
+
4.2 Example External Wiring
*1 The grounding resistance should
be 100Ω or less.
*2 The power supply input is only for
the FX -1PS-5V.
3UC
*3 The same power source for the
main unit, extention power supply
unit and special function unit/block
is preferable. When using the
different power source from the
main unit, turn ON the perepheral
devices' power simaltaneously, or
earlier than the main unit's. When
turning OFF the power, confirm the
safety of the system, and then turn
OFF the power of the PLC
(including special extension
equipment) at the same time.
+
GOT
-
+
Fuse
24V
DC
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