4-23
4-3 Wiring Conforming to EMC Directives
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
4
System Design
Cable Details
For operations, if no-fuse breakers are installed at the top and the power supply line is wired from
the lower duct, use metal tubes for wiring or make sure that there is adequate distance between
the input lines and the internal wiring. If input and output lines are wired together, noise resistance
will decrease.
The noise filter must be installed as close as possible to the entrance of the control panel. Wire
as shown at the left in the following illustration.
Use twisted-pair cables for the power supply cables, or bind the cables.
Separate power supply lines and signal lines when wiring.
Symbol
Supplies from
Connects to
Cable name
Length
Comment
Shielded
Ferrite
(1)
AC power supply Noise filter
Power supply
line
2 m
3-phase or single
phase 200 V
No
No
(2)
Noise filter
Servo Drive
Power supply
line
2 m
−
No
Optional
(3)
Servo Drive
Servomotor
Power cable
20 m
−
Yes
Optional
(4)
Servo Drive
Servomotor
Encoder
cable
20 m
−
No
Optional
(5)
Switch box
Servo Drive
I/O cable
2 m
−
No
Optional
(6)
Frame ground
Noise filter
FG line
1.5
m
−
No
No
(7)
Frame ground
Noise filter
FG line
1.5
m
−
No
No
(8)
AC power supply Switch box
Power supply
line
1.5
m
−
No
No
Separate the input and output.
The effect of the noise filter is small.
NF
1
2
3
4
5
6
E
NF
1
2
3
4
5
6
E
AC input
AC input
Ground
Ground
AC output
AC output
Twisted-pair process
Bound cables
Servo Drive
L1C
L1
L2
L3
L2C
Servo Drive
Binding