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9 Preparation for Wiring and Power Supply Wiring Procedures
9.4 Examples of External Wiring [AC Power Supply Type]
134
FX3G Series Programmable Controllers
User's Manual - Hardware Edition
9.4.3 Example of source input [+common] wiring
An example of source input [+common] wiring is shown below.
*1 Connect the AC power supply to the L and N terminals (in
any case of 100V AC system and 200V AC system).
Make sure that the power is turned ON at the same time in
the main unit and extension units or earlier in extension
units than the main unit.
For the details, refer to "WIRING PRECAUTIONS" in
"Safety Precautions".
As for the details, see "WIRING PRECAUTIONS" at
"Safety Precautions" field.
*2
*4
*5
*3 Some special function units/blocks, special adapters do not
have a power supply terminal.
When using an external power supply, turn it ON at the
same time with the main unit or earlier than the main unit.
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.
Do not connect the 24V terminals (24V DC service power
supply) of the main unit and the input/output extension unit
with each other. Connect the 0V terminal.
Some special extension units/blocks do not have power
terminals.
When using an external power supply, turn it ON at the
same time with the extension unit or earlier than the
extension unit.
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.
*6 The "24V" and "0V" terminals are located on the output
terminal side.
For details on the terminal layout, refer to Section 4.7.
Connect the 0V terminal of the main unit or extension
unit to the S/S terminal of the input extension block.
AC power supply of
100 to 240V
S/S
L
N
0V
Special adapter
24-
24+
Class D
grounding
PL
Power supply ON
Emergency
stop
MC
MC
24V
Main unit
Input extension
block
S/S
24V DC
service
power
supply
output
*4
*1
*2
5V 0V 24V
5V 0V 24V
5V 0V 24V
Sink and source input type
MC MC
DC
power
supply
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.
DC AC
Breaker
24-
24+
*3
*3
Special function
block
5V 0V 24V
S/S
L
N
0V
24V
S/S
24-
24+
24V DC
service
power
supply
output
*5
*4
*1
*2
Input / output powered extension unit
5V 0V 24V
5V 0V 24V
Input extension
block
Special function
block
5V 0V 24V
5V 0V 24V
Output extension
block
Sink and
source
input
type
Sink and
source
input
type
*6
*6