FX3U Series Programmable Controllers
User’s Manual - Hardware Edition
163
9 Preparation for Wiring and Power Supply Wiring Procedures
9.6 Examples of External Wiring [DC Power Supply Type]
1
Introduction
2
Features and
Part Names
3
Product
Introduction
4
Specifications
5
Version and
Peripheral
Devices
6
System
Configuration
7
Input/Output
Nos., Unit Nos.
8
Installation
9
Preparation and
Power Supply
Wiring
10
Input Wiring
9.6.2 Example of source input [+common] wiring
An example of source input [+common] wiring is shown below.
*1 Connect DC power to [+] and [-] terminals. The same power
source for the main unit, extention unit and special function
unit/block is preferable. When using the different power source
from the main unit, turn ON the perepheral devices' power
simaltaneously, 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.
*2 Do not connect with [0V] and [24V]
terminals.
*3 24V DC [-] supplies power to the [S/S]
terminal at the input extension block.
*4 Some special function units/blocks do not
have power supply terminal.
Special adapter
24-
24+
PL
Power supply ON
Emergency
stop
MC
MC
Input extension
block
S/S
*3
5V 0V 24V
5V 0V 24V
Sink and source input type
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.
24-
24+
*1, 4
Special function
block
5V 0V 24V
S/S
24-
24+
*1, 4
*1
*3
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
24V DC
Circuit protector
*2
*2
S/S
(0V)
(24V)
Main unit
*1
5V 0V 24V
S/S
0V
24V
Input/output powered extension unit
5V 0V 24V
Class D
grounding
Class D
grounding
Class D
grounding
Class D
grounding
Class D
grounding
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