Example Of Source Input [+Common] Wiring - Mitsubishi Electric MELSEC-F FX3G Series User Manual

FX Series Programmable Controllers
3G
User's Manual - Hardware Edition
9.5.2

Example of source input [+common] wiring

An example of source input [+common] wiring is shown below.
Sink and source input type
5V 0V 24V
Sink and
5V 0V 24V
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 DC power to [+] and [-] terminals. The same power
source for the main unit, extension units, special function
unit/blocks and special adapters is preferable. When using the
different power source from the main unit, turn ON the
peripheral devices' power simultaneously, 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.
*1, *4
Special adapter
24+
24-
*1
Main unit
S/S
*3
Input extension
S/S
block
*1, *4
Special function
24+
block
24-
*1
S/S
0V
*2
24V
*3
Input extension
S/S
block
*1, *4
Special function
24+
block
24-
Output extension
block
9 Preparation for Wiring and Power Supply Wiring Procedures
9.5 Examples of External Wiring [DC Power Supply Type]
Class D
grounding
MC
MC
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.
*2
D o n o t c o n n e c t w i t h [ 0 V ] a n d [ 2 4 V ]
terminals.
*3
24V DC [-] supplies power to the [S/S]
terminal at the input extension block.
*4
Some special function units/blocks, special
adapters do not have a power supply terminal.
24V DC
Circuit protector
Power supply ON
PL
MC
Emergency
stop
MC
139
1
2
3
4
5
6
7
8
9
10