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APPENDIX 9 EMC INSTALLATION GUIDELINES
Appendix 9.4 Panel Structure
I - 109
Appendix 9.4.3 Countermeasures for power supply
(1) Shield the power supply section and insert a filter to prevent the noise from flowing in or out.
Selection of the noise filter capacity will differ according to the drive amplifier and devices being
used.
Refer to the "EMC Installation Guidelines" NC Servo Amplifier Section [BNP-B8582-45].
Device
Radiated noise
Flow out
(Fig.1)
NF
Partition
plate
AC input
(Fig.2)
AC in
p
ut
Conductive
noise
NF
Noise
filter
Noise
filter
Device
Radiated noise
Conductive
noise
[CAUTION]
• The conductive noise can be suppressed just by inserting a noise filter, but the radiated
noise will flow out. (Fig. 1)
• The conductive and radiated noise can both be suppressed by adding a partition plate to
the noise filter. (Fig. 2)