3. INSTALLATION
3.2 Noise Countermeasures
I
-4
3.2 Noise Countermeasures
3.2.1 Connection of FG (Frame Ground)
The frame should basically be grounded at one ground point.
Connect the control unit and base I/O unit's and remote I/O unit's 0V (RG) to the FG on the 24VDC
stabilized power supply side.
DC2
4
V
(+
)
FG
0V
0
0
0
CF31CF32
CF34
CF33
SV2
SV1
HR3□□
RIO1
RIO2
DCIN
CF10
ENC
CR31
SKIP
Control unit
FCU6-MU
-MA
Main gaounding plate
for electric cabinet
FG cable
FG cable
R220 cable
R220 cable
R220 cable
(24VDC)
(24VDC)
(24VDC)
FG cable
FCU6-DX3
/DX4
/HR377/378
Base I/O unit
4
ST
No.
POWER
RUN
CPU-E
STOP
RUN
RI
O
ERR1
ERR2
Remote I/O unit
FCU6-DX561
Stabilized power supply
D
C
24V
(+)
FG
0V
Short bar
AC input
FG cable
FG
0V
24V
D
C
(+
)
Stabilized power supply
Short bar
AC input
FG
0V
24
V
D
C
(+
)
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