Справочник Пользователя для Mitsubishi Electronics FX3S-5DM
71
FX
3S
Series Programmable Controllers
User's Manual - Hardware Edition
1
Introduc
tion
2
Features an
d
Par
t N
t N
am
es
3
Produc
t
Introducti
on
4
Sp
ec
ific
atio
ns
5
Ve
rsi
on and
Peri
pheral
pheral
De
vice
s
6
Sy
stem
Confi
gurati
on
7
In
st
alla
tio
n
8
Prep
ara
tion and
Pow
er Supply
Wi
ring
9
Input W
iri
ng
10
Hi
gh
-S
peed
Counters
8 Preparation for Wiring and Power Supply Wiring Procedures
8.3 Grounding
8.3
Grounding
Ground the PLC as stated below.
• Perform class D grounding. (Grounding resistance: 100
• Perform class D grounding. (Grounding resistance: 100
or less)
• Ground the PLC independently if possible.
If it cannot be grounded independently, ground it jointly as shown below.
Extension devices of PLC (except expansion board and special adapter)
• Use ground wires thicker than AWG14 (2 mm
2
).
• Position the grounding point as close to the PLC as possible to decrease the length of the ground wire.
PLC
Other
equipment
PLC
Other
equipment
PLC
Other
equipment
Shared grounding
Good condition
Common grounding
Not allowed
Independent grounding
Best condition
Main unit
Other
equipment
Special
adapter
Expansion
board
PLC
Independent grounding
Class D grounding
(grounding resistance: 100
or less)