Appendix 1. EMC Installation Guidelines
1.5 Measures for Wiring in Panel
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1.5 Measures for Wiring in Panel
Cables act as antennas to propagate unnecessary noise, and thus must be appropriately shielded and
treated. The following measures must be sufficiently considered for the cables (SH21/G013/F012/FCUA-
R211) that carry out high-speed communication.
1.5.1 Precautions for Wiring in Panel
(1) If the cables are led unnecessary in the panel, they will pick up noise. Pay attention to the device layout
and wire length so that the wiring length is as short as possible.
Noise
Device Device
Device
Device Device Device
(2) Always connect the grounding wire to the FG terminal indicated on the device.
(3) Keep the distance between the drive line and detector cable to the drive section motor as far apart as
possible when wiring.
(4) Do not lead the power supply wire around the panel without using a filter.
NF
Partition
plate
Device
Radiated
noise
AC input
Conductive
noise
Flow out
Noise
filter