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3.1.5 Ferrite core
Use of ferrite cores is effective in reducing the conduction noise in the
band of about 10 MHz and radiated noise in 30 to 100 MHz band.
It is recommended to attach ferrite cores when the shield of the shielded
cable coming out of the control panel does not work effectively, or when
emission of the conduction noise from the power line has to be
suppressed.
We tested using ferrite cores from TDK Corporation, ZCAT3035-1330
and ZCAT2032-0930, and RFC-H13 from KITAGAWA INDUSTREIS
CO., LTD.
Make sure to attach a ferrite core to a cable at the position closest to the
outlet of control panel as possible. If attached at an improper position,
the ferrite core will not work effectively.
• Ferrite core
Type
Contact : TDK Corporation
Type
Contact : KITAGAWA INDUSTREIS CO., LTD
3.1.6 Noise filter (power supply line filter)
A noise filter is a component which has an effect on conducted noise.
With the exception of some models, it is not required to fit the noise filter
to the power supply line, but fitting it can further suppress noise. (The
noise filter has the effect of reducing conducted noise of 10 M Hz or
less.) Use any of the following noise filters (double π type filters) or
equivalent.
Model name
Manufacturer
Rated current
Rated voltage
: ZCAT3035-1330, ZCAT2032-0930
: RFC-H13
FN343-3/01
SCHAFFNER
3 A
19
FN660-6/06
SCHAFFNER
6 A
250 V
ZHC2203-11
TDK
3 A
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