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13 Examples of Wiring for Various Uses
119
FX
3S
 Series Programmable Controllers
User's Manual - Hardware Edition
11
Bui
lt-
in Anal
og
12
O
utpu
t Wi
ring
13
Wiri
ng for
Va
rious U
ses
14
Te
st R
un,
M
ain
tenanc
e,
Troub
le
shooting
15
Oth
er Ex
tensi
on
U
nit
s and
Opti
ons
16
Displ
ay
 Modul
(FX
3S
-5
D
M
)
17
Me
m
ory
C
ass
ette
A
Spec
ial D
evices 
(M
8000-,
 D8000-)
B
Instruc
tion Li
st
C
Di
sc
onti
nued
model
s
13.1 Notes about Examples of Wiring
13.1
Notes about Examples of Wiring
The examples of wiring are given under the following conditions.
For the example of positioning wiring, refer to the Positioning Control Edition.
• The input/output numbers are the actual numbers on the program. 
(They may differ from the numbers shown on the product terminals.)
• Product input/output specifications
Check the product input/output specifications when using any example of wiring.
- Products for sink output and products for source output are available.
• The examples of programming (applied instructions) are given based on the allocation of the input/output 
numbers for wiring.
For the applied instructions, refer to the Programming Manual.
WIRING PRECAUTIONS
Make sure to cut off all phases of the power supply externally before attempting installation or wiring work. 
Failure to do so may cause electric shock or damage to the product.
Make sure to attach the terminal cover, offered as an accessory, before turning on the power or initiating operation after installation or
wiring work. 
Failure to do so may cause electric shock.
WIRING PRECAUTIONS
Do not supply power to the [24V] terminal (24 V DC service power supply) on the main unit. 
Doing so may cause damage to the product.
Perform class D grounding (grounding resistance: 100 
 or less) to the grounding terminal on the main unit with a wire 2 mm
2
 or
thicker. 
Do not use common grounding with heavy electrical systems (refer to Section 8.3).
Connect the AC power supply wiring to the dedicated terminals described in this manual. 
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn out.
Noise resistance may be lower when the L and N wires of an AC power supply are not wired correctly. 
Please wire using the correct polarity.
Connect the DC power supply wiring to the dedicated terminals described in this manual. 
If an AC power supply is connected to a DC input/output terminal or DC power supply terminal, the PLC will burn out.
Do not wire vacant terminals externally. 
Doing so may damage the product.
When drilling screw holes or wiring, make sure cutting or wire debris does not enter the ventilation slits. 
Failure to do so may cause fire, equipment failures or malfunctions.
Make sure to properly wire to the main unit in accordance with the following precautions.
Failure to do so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions, or damage to the product.
-
Make sure to properly wire to the main unit in accordance with the rated voltage, current, and frequency of each terminal.
-
The disposal size of the cable end should follow the dimensions described in the manual.
-
Tightening torque should follow the specifications in the manual.
-
Tighten the screws using a Phillips-head screwdriver No.2 (shaft diameter 6mm (0.24”) or less). Make sure that the screwdriver 
does not touch the partition part of the terminal block.
Make sure to properly wire to the terminal block (European type) in accordance with the following precautions.
Failure to do so may cause electric shock, equipment failures, a short-circuit, wire breakage, malfunctions, or damage to the product.
-
The disposal size of the cable end should follow the dimensions described in the manual.
-
Tightening torque should follow the specifications in the manual.
-
Twist the end of strand wire and make sure that there are no loose wires.
-
Do not solder-plate the electric wire ends.
-
Do not connect more than the specified number of wires or electric wires of unspecified size.
-
Affix the electric wires so that neither the terminal block nor the connected parts are directly stressed.