Noise Filter (Power Supply Line Filter) - Mitsubishi Electric MELSEC-Q Series User Manual

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  type filters) or
equivalent.
Model name
Manufacturer
Rated current
Rated voltage
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.
(power supply side)
Filter
(a) The noise will be included
when the input and output
wires are bundled.
(2) Earth the noise filter earthing terminal to the control panel with the
shortest wire possible (approx. 10 cm (3.94 in.)).
FN343-3/01
SCHAFFNER
3 A
Input side
(power supply side)
Introduction
Output side
(device side)
(b) Separate and lay the input
22
FN660-6/06
SCHAFFNER
6 A
250 V
Input side
Filter
(device side)
and output wires.
ZHC2203-11
TDK
3 A
Introduction
Output side