An External Wiring Example For The Extension Power Supply Unit (Sink Input [-Common]) - Mitsubishi FX3U SERIES User Manual

FX Series Programmable Controllers
3U
User's Manual - Hardware Edition
9.5.4

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 ther.
Sink and source input type
5V 0V 24V
Sink and
5V 0V 24V
source
input
type
5V 0V 24V
5V 0V 24V
Extension power supply unit
5V 0V 24V
5V 0V 24V
Sink and
source
input
5V 0V 24V
type
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 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.
160
grounding
Special adapter
24+
24-
*1
Main unit
grounding
L
N
S/S
0V
24V
*2,3
Input extension
S/S
block
*4
grounding
Special function
24+
block
24-
*1
grounding
L
N
*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 Procedures
9.5 Examples of External Wiring [AC Power Supply Type]
Class D
Class D
24V DC
service
power
supply
output
Class D
Class D
Wiring precaution:
Class D
Grounding and power cables should be positioned
to exit the unit from above as shown in the figure.
*5
AC power supply of
100 to 240V
Breaker
Power supply ON
PL
MC
MC
Emergency
stop
MC
DC
power
supply
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.
Grounding and
power cables
When turning OFF the power, confirm the
safety of the system, and then turn OFF the
p o we r o f t h e P L C ( i n c l u d i n g s p e c i a l
extension equipment) at the same time.
Some special function units/blocks do not
have the power supply terminals.
When using an external power supply, turn it
ON at the same time with the extension
p owe r s u p p l y u n i t o r e a rl i e r t h a n t h e
extension power supply unit.
When turning OFF the power, confirm the
safety of the system, and then turn OFF the
p o we r o f t h e P L C ( i n c l u d i n g s p e c i a l
extension equipment) at the same time.
MC
AC