An External Wiring Example For The Extension Power Supply Unit (Sink Input [-Common]) - Mitsubishi FX3G SERIES User Manual

FX Series Programmable Controllers
3G
User's Manual - Hardware Edition
9.4.4

An external wiring example for the extension power supply unit (sink input [-common])

This example shows a sink input wiring (-common),including the extension power supply unit.When adding an
input extension block,check the signal name on the terminal block since the sink/source type and sink type
differ from each there.
Sink and source input type
5V0V 24V
5V0V 24V
Sink and
source
input
type
5V0V 24V
5V 0V 24V
Extension power supply unit
5V0V 24V
5V0V 24V
Sink and
source
input
5V0V 24V
type
5V0V 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 power supply units or earlier in extension power supply units than the
main unit.
As for the details, see "WIRING PRECAUTIONS" at "Safety Precautions" field.
*2 Connect the 24V terminal of the main unit to the S/S terminal of the input
extension block.
*3 In the case of the sink input type, the S/S terminal is used as the 24+ terminal.
*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.
114
Class D
grounding
Special adapter
24+
24-
Class D
*1
Main unit
grounding
L
N
S/S
*6
0V
*6
24V
*2,3
Input extension
S/S
block
Class D
*4
grounding
Special function
24+
block
24-
Class D
*1
grounding
L
N
Class D
*5
grounding
Special function
24+
block
24-
*2,3
Input extension
S/S
block
Output extension
block
9 Preparation for Wiring and Power Supply Wiring
24V DC
service
power
MC
supply
output
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.
Wiring precaution:
Grounding and power cables should be positioned
to exit the unit from above as shown in the figure.
*5 Some special function blocks do not have
the power supply terminals.
When using an external power supply,
turn it ON at the same time with the
extension power supply unit or earlier
than the extension power supply 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.
9.4 Examples of External Wiring
AC power supply of
100 to 240V
Breaker
Power supply ON
PL
MC
MC
Emergency
stop
MC
DC
power
supply
DC AC
Grounding and
power cables