Справочник Пользователя для Mitsubishi Electronics FX3S-30MT/ESS-2AD
10 Use of High-speed Counters
95
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
10.8 Examples of External Wiring (Rotary Encoder)
10.8.2 2-phase 2-input [C251 to C255]
The following examples of wiring apply to the cases where C251 is used.
When another high-speed counter number is used, wire the counter referring to the following diagrams.
It is recommended to use shielded twisted-pair cables for connection cables. Ground the shield of each
shielded cable only on the PLC side.
1) NPN open collector transistor output rotary encoder
When another high-speed counter number is used, wire the counter referring to the following diagrams.
It is recommended to use shielded twisted-pair cables for connection cables. Ground the shield of each
shielded cable only on the PLC side.
1) NPN open collector transistor output rotary encoder
2) PNP open collector transistor output rotary encoder
*1.
The grounding resistance should be 100
or less.
Sink wiring
S/S
24V
Class D grounding
*1
Fuse
0V
X000
X001
L
N
0V
24V
PLC
Rotary encoder
24 V DC
Z-phase
B-phase
A-phase
Source wiring
Class D grounding
*1
Fuse
Rotary encoder
24 V DC
Z-phase
B-phase
A-phase
S/S
24V
0V
X000
X001
L
N
0V
24V
PLC