7.4 Panel Inside Wiring, Panel Outside Wiring
7.4.1 Panel inside wiring
7
- 11
1
OV
E
R
VI
EW
2
SYSTE
M
CO
N
F
IG
UR
A
T
IO
N
3
S
P
E
CI
F
ICA
T
ION
S
4
P
A
R
T
NA
ME
AND
SETTING
S
5
EMC AND
LO
W
VO
LT
AG
E
DIRE
CT
IVE
6
INS
TAL
L
A
TI
ON
7
WIRING
8
OP
TIO
N
7.4 Panel Inside Wiring, Panel Outside Wiring
7.4.1
Panel inside wiring
In wiring, the power line connected to the power or servo amplifier and the communication cable such as bus
connection cable or network cable must not be mixed.
Mixing the power line and communication cable may cause malfunction due to noise.
When using an equipment that may occur surge noise, such as molded case circuit breaker (MCCB),
electromagnetic contactor (MC), relay (RA), solenoid valve, or induction motor, using a surge suppressor is
effective.
For surge suppressor, refer to the following.
7.5 Attaching Surge Suppressor for Control Equipment
7.4.2
Panel outside wiring
When leading the power line and communication cable outside the panel, open cable holes at two separate
places to lead the cables separately out.
If cables are led out through the same cable hole for wiring reasons, the cables are more easily influenced
by noise.
Install the power line and communication cable as apart from each other as possible in the duct.
If the cables are installed closely with each other for wiring reasons, using a separator (made of metal) can
make the cables less influenced by noise.
Wiring for leading the power line and communication cable out from the panel
Wiring of power lines and communication cables in the duct
Terminal block
Control panel inside
Separated power lines and communication cables
Power cable
GOT
connection
cable
GOT
connection
cable
PLC's I/O wire
Drive control
wire
NFB
MC
MC
RA
RA
Terminal block
Control panel inside
Mixed power lines and communication cables
Power cable
Drive
control
wire
NFB
MC
MC
RA
RA
PLC's I/O wire
Power line
Communication
cable
Cable hole
Power line
Communication
cable
Power line
Wiring duct
Separator
Power line
Signal line
Communication cable
100mm or more