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7. WIRING
7.2 Wiring inside and outside the panel
7 - 5
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
PARTS NAME
5
UL, cUL
STANDARDS AND
EMC DIRECTIVE
6
INSTALLATION
7
WIRING
8
OPTION
7.2 Wiring inside and outside the panel
7.2.1 Wiring inside
Run power lines, servo amplifier drive wires, and communication cables so that they do not cross each other.
Noise interference that is generated by cables that cross each other may cause malfunctions.
Surge suppressors are an effective way to filter out surge noise that is generated from no fuse breakers (NFB),
electromagnetic contactors (MC), relays (RA), solenoid valves, and induction motors.
For surge killers, refer to the section to follow.
7.2.3 Attaching surge killers to control equipment
7.2.2 Outside the panel
To pull the power line and communication cable out of the panel, make two pullout holes away from each other and pull
the cables through.
Putting both cables through the same pullout hole will increase noise interference.
Keep the power line and communication cable inside the duct at least 100mm away from each other.
If that is not possible, the use of a metal separator inside the duct can reduce noise interference.
NFB
MC
PLC
MC RA RA
Terminal block
Crossing power lines and communication cables
GOT connection cable
PLC I/O wire
Drive control wire
NFB
MC
PLC
MC RA RA
Terminal block
Uncrossed power lines and
communication cables
GOT connection cable
PLC I/O wire
Drive control wire
Power
cable
Power
cable
Power line
Pullout hole
Connection
cable
Connection
cable
Pullout hole
Power line
100mm or more
Wiring duct
Separator
Signal line
Power line
Power line
Signal line