Sysmac OMRON NA Series, User Manual

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3 Installation and Wiring
NA-series Programmable Terminal Hardware User’s Manual (V117)
3-5
Con
trol Pan
el In
st
alla
tion
3
3-
5-5 Electrical Envir
onment
• To avoid overheating the conduits when using conduits for wiring, do not place wires for a single
circuit in separate conduits.
• Power cables and signal cables adversely affect each other. Do not wire them in parallel.
• Noise induction may occur if the NA Unit is installed in a panel that includes high-voltage devices.
Wire and install them as far apart as possible.
• Either install the NA Unit a minimum of 200 mm away from high-voltage lines or power lines, or
place the high-voltage lines or power lines in metal tubing and completely ground the metal tubing
to 100
Ω
or less.
Parallel Wiring (Single Phase)
Correct
Correct
Power supply
Incorrect
Power supply
Power supply
Load
Load
Load
Example: Separating NA Unit from Power Lines
Metal tubing
200 mm
200 mm
High-voltage power panel
Power lines
Power lines
Ground of
100 Ω or less
NA Unit
NA Unit