Preventing Noise - Omron C1000H Installation Manual

Preventing Noise

5-4

Preventing Noise

If the I/O wiring and power cables must be placed in the same duct (for example,
where they are connected to the equipment), shield them from each other using
grounded metal plates.
1 2
1 = I/O wiring
2 = General control wiring
3 = Power cables
In order to prevent noise from interfering with the operation of the PC, use AWG
14 twisted-pair cables (cross-sectional area: 2 mm
PC close to high-power equipment, and make sure the point of installation is at
least 200 mm away from power cables as shown below.
Power lines
200 mm min.
PC
200 mm min.
Whenever possible, use wiring conduit to hold the I/O wiring. Standard wiring
conduit should be used, and it should be long enough to completely contain the
I/O wiring and keep it separated from other cables.
3
Grounding at resistance
of less than 100 W
2
min.). Avoid mounting the
Section 5-4
Metal plate (iron)
200 mm min.
51