5 WIRING
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5.3 Wiring for Grounding
•
Ground the LG (line ground) and FG (frame ground) terminals separately. LG is a
grounding terminal for power noise, while the FG is a grounding terminal for network circuit
noise. Keep the LG and FG apart to prevent mutual interference.
•
Connect the FG to the mount base FG terminal with the shortest possible separation.
•
Give Class D (JIS) grounding to the mount base grounding FG terminal, insulated from the
enclosure.
Example wiring when the CPU unit and I/O unit are mounted in the enclosure
If the CPU and the I/O unit are mounted in the same enclosure, have the FG terminal of the CPU
and that of the remote I/O station module connected to their respective mount base FG terminals,
grounded to the same point. This assures the same ground potential, increasing effectiveness of
the grounding and improving immunity to noise.
PS
LQV000
POWER
POWER
ON
ON
OFF
OFF
H
N
LG
LG
FG
FG
AC100-120V
AC100-120V
DC5V
DC5V
GND
GND
SERVICE
SERVICE
CHECK
CHECK
POWER
POWER
LQS000
LQS000
HITACHI
HSC-1000
RI/O
U
L
ST.NO
RI/O
D.INPUT
D.INPUT
LQX100
100-120VAC
100-120VAC
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
E
F
D.INPUT
LQX100
100-120VAC
100-120VAC
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
E
F
LG
FG
LG
FG
FG
FG
PS
LQV000
POWER
POWER
ON
ON
OFF
OFF
H
N
LG
LG
FG
FG
AC100-120V
AC100-120V
DC5V
DC5V
GND
GND
SERVICE
SERVICE
CHECK
CHECK
POWER
POWER
HITACHI
S10mini
LQP000
LQP000
LADDER
LADDER
MODE
MODE
PROTECT
PROTECT
RESET
RESET
STOP
STOP
RUN
RUN
SIMU
SIMU
NORM
NORM
OFF
OFF
ON
ON
CPU-S
CPU-S
D.INPUT
D.INPUT
LQX100
100-120VAC
100-120VAC
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
E
F
D.INPUT
LQX100
100-120VAC
100-120VAC
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
E
F
PS
CPU
I/O
I/O
PS
RI/O
I/O
I/O
FG (B9)
FG (B9)
The SHD terminals (A4, A9, B3, and B8) in the CPU
modules are connected internally to the FG (B9) terminal.
The SHD terminals (A6 and B7) to be connected
to the remote I/O cable of the RI/O station module
are connected internally to the FG terminal (B9).
Terminal block
(single point for LG)
LG
(See wiring for the power supply.)
FG and LG cable sizes
Inside the enclosure: 2 mm
2
or more
Outside the enclosure: 5.5 mm
2
or more
Terminal block
(single point for FG)
FG
(See wiring for the power supply.)
CPU RUN
CPU RUN
Содержание S10mini D
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