Edwards STP-iX455, Инструкция по эксплуатации

Страница: 73 / 147

STP-iX455/iXL455 Series Instruction Manual
9-7
O
pe
ra
tio
n
DO NOT bundle a communication line with a protective earth conductor or a power line.
Moreover, keep away a communication line from the apparatus used as a noise source as
much as possible.
As radio frequency noise measure, place a ferrite core on both ends of the communication
cable.
When electromagnetic interference caused by radio frequency noise in frequency band (150
kHz to 1 GHz) affects communication, attaching ring ferrite cores to the cable is effective to
reduce communication failure.
Figure 9.5 Example of ring ferrite core installation
Locate and secure the cables.
It may be difficult to measure the reproducibility of the communication failure without securing
the cables.
Avoid installing a power line and a communication line in the same metallic duct.
When unavoidable, separate a line with a metal separator certainly, and connect the duct
containing a metal separator certainly to GND, or installing a communication line put into
conductive pipes, such as metal.
Communication line
Metallic separator
GND
Power line
Metallic duct
Figure 9.6 Example of cable installation in metallic duct