Example Of Sink Input [-Common] Wiring - Mitsubishi FX3G SERIES User Manual

FX Series Programmable Controllers
3G
User's Manual - Hardware Edition
9.4.2

Example of sink input [-common] wiring

An example of sink input [-common] wiring is given below. When connecting input/output powered extension
units/blocks, carefully check the signal names on the terminal block because the sink and source input type
units/blocks and the sink input type units/blocks vary in signal names on the terminal block.
Sink and source input type
5V 0V 24V
5V 0V 24V
Sink and
source
input
type
5V 0V 24V
5V 0V 24V
Input / output powered extension unit
Sink and
5V 0V 24V
source
input
type
5V 0V 24V
5V 0V 24V
5V 0V 24V
*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 Connect the 24V terminal of the main unit or the input/
output extension unit to the S/S terminal of the input
extension block.
In the case of the sink input type, the S/S terminal is used
*3
as the 24+ terminal.
112
Class D
grounding
Special adapter
24+
24-
Class D
*1
Main unit
grounding
L
N
S/S
*7
0V
*7
24V
*2,3
Input extension
block S/S
Class D
*4
grounding
Special function
24+
block
24-
Class D
*1
grounding
L
N
S/S
0V
24V
*2,3
Input extension S/S
block
Class D
*6
grounding
Special function 24+
block
24-
Output extension
block
9 Preparation for Wiring and Power Supply Wiring
*5
24V DC
service
power
supply
output
24V DC
service
power
supply
output
*5
Sink input type
COM
24+
*4 Some special function units/blocks do not have the 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.
*5 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.
*6 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.
*7 The "24V" and "0V" terminals are located on the output terminal
side.
For details on the terminal layout, refer to Section 4.7.
9.4 Examples of External Wiring
AC power supply of
100 to 240V
Breaker
Power supply ON
PL
MC
MC
Emergency
stop
MC MC
DC
power
supply
DC AC
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.
24V DC
service power
supply output
*5