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EMC AND LOW VOLTAGE DIRECTIVES9.
9.1.6 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 type filters) or equivalent.
The precautions required when installing a noise filter are described below.
(1) Do not bundle the wires on the input side and output side of the noise filter. When
bundled, the output side noise will be induced into the input side wires from which the
noise was filtered.
(2) Earth the noise filter ground terminal to the control panel with the shortest wire
possible (approx. 10cm (3.94inch)).
9.1.7 Power line for external power supply terminal
The power line connecting to the external power supply terminal of the module should be
30m (98.43 ft.) or less.
Model name FN343-3/01 FN660-6/06 ZHC2203-11
Manufacturer SCHAFFNER SCHAFFNER TDK
Rated current 3A 6A 3A
Rated voltage 250V
(a) The noise will be induced when the input and output
wires are bundled.
(b) Separate and lay the input and output wires.
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