Table of Contents
Advertisement
Example: Ground-wiring for an I/O unit in a dispersed installation
In a dispersed installation, where the cubicles are interconnected by remote I/O cable wiring
and single-point grounding is not applicable to the LPU/CPU unit and I/O unit(s), the SHD
terminal of the remote I/O station module must be left unwired. If it is wired to ground,
this will result in a decrease in noise resistance because of the different grounding
potentials. FG-terminal grounding must be provided only on LPU/CPU unit side.
TB
(collecting
LG wires)
Leave this remote I/O station module's SHD
terminal unwired.
LG
Figure 4-6 An Example of Ground-Wiring in a Dispersed Installation
LWV450
LWS410
LWI400
A
POWER ON
RI/O
0
1
2
3
U
4
STNO
5
L
6
7
D.INPUT
P.SUPPLY
E.STATION
DC12 24V
DC12V
A
1
A
1
CHECK
C0
DC5V
RI/O
B
2
CHECK
2
IN
0
SHD
3
3
1
A
4
4
2
RI/O
B
5
OUT
5
3
SHD
6
6
4
TA
7
7
TERM
5
TB
8
8
6
SHD
9
9
7
S0
10
10
C1
FIX
C0
11
11
C2
S1
12
12
OUTPUT
8
HOLD
13
C1
13
9
H
S2
14
14
A
AC100V
128P
IN
N
15
C2
15
B
S3
16
16
C
64P
LG
C3
17
D
17
FG
S4
E
18
18
32P
C4
F
19
19
GND
C3
20
20
HITACHI
HITACHI
HITACHI
Sizes of FG/LG cable:
In cubicle: 2 mm
Outside of cubicle: 5.5 mm
DI
LWI400
DI
LWO400
B
A
B
A
8
0
8
0
8
0
8
0
8
0
9
1
9
1
9
1
9
1
9
1
A
2
A
2
A
2
A
2
A
2
B
3
B
3
B
3
B
3
B
3
C
4
C
4
C
4
C
4
C
4
D
5
D
5
D
5
D
5
D
5
E
6
E
6
E
6
E
6
E
6
F
7
F
7
F
7
F
7
F
7
D.OUTPUT
D.INPUT
DC12 24V
AC100-200V
B
B
B
A
A
C0
B1
C0
B1
C0
C0
C0
A1
A1
0
0
0
B2
B2
0
0
A2
A2
1
1
1
B3
B3
1
1
A3
A3
2
2
2
B4
B4
2
2
A4
A4
3
3
3
B5
B5
3
3
A5
A5
4
4
4
B6
B6
4
4
A6
A6
5
5
5
B7
B7
5
5
A7
A7
6
6
6
B8
B8
6
6
A8
A8
7
7
7
B9
B9
7
7
A9
A9
C1
C1
C1
B10
B10
C1
C1
A10
A10
C2
C2
C2
B11
B11
C2
C2
A11
A11
8
8
8
B12
B12
8
8
A12
A12
9
9
9
B13
B13
9
9
A13
A13
A
A
A
B14
B14
A
A
A14
A14
B
B
B
B15
B15
B
B
A15
A15
C
C
C
B16
B16
C
C
A16
A16
D
D
D
B17
B17
D
D
A17
A17
E
E
E
B18
B18
E
E
A18
A18
F
F
F
B19
B19
F
F
A19
A19
C3
C3
C3
B20
B20
C3
C3
A20
A20
HITACHI
HITACHI
2
or more
2
or more
4-7
DO
LWO400
DO
B
A
B
8
0
8
0
8
9
1
9
1
9
A
2
A
2
A
B
3
B
3
B
C
4
C
4
C
D
5
D
5
D
E
6
E
6
E
F
7
F
7
F
D.OUTPUT
AC100-200V
B
A
B1
C0
B1
C0
A1
A1
0
B2
B2
0
A2
A2
1
B3
B3
1
A3
A3
2
B4
B4
2
A4
A4
3
B5
B5
3
A5
A5
4
B6
B6
4
A6
A6
5
B7
B7
5
A7
A7
6
B8
B8
6
A8
A8
7
B9
B9
7
A9
A9
C1
B10
B10
C1
A10
A10
C2
B11
B11
C2
A11
A11
8
B12
B12
8
A12
A12
9
B13
B13
9
A13
A13
A
B14
B14
A
A14
A14
B
B15
B15
B
A15
A15
C
B16
B16
C
A16
A16
D
B17
B17
D
A17
A17
E
B18
B18
E
A18
A18
F
B19
B19
F
A19
A19
C3
B20
B20
C3
A20
A20
HITACHI
4 WIRING
TB
(collecting
FG wires)
FG
Advertisement
Table of Contents
Troubleshooting
