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24. TROUBLESHOOTING
Mee8urw
Route
I f
the
s b a l
lines
are run in parallel to the power lines or
if t h e
signal lines are
brnaed
with the power lines, n W (electromagnetically induced noise,
electrostatically
W e d n o i s e )
may propagate to
the signal
lines causing
mahnctioning. In such
c a s e s ,
it is necessaly
to take
the
following measures:
(1)
Install the equpmenVdevices which are easily influenced by noise away from
4) 5) 6 )
(2)
Run
the
signal
lines which are easily influenced by noise
as
far hom the
the
inverter.
inverter and
il8
inpuVoutput
he8
as
possible.
(3) Avoid luming signal lines parallel with tho power lines (inverter inpuVoutput
lines),
at30
avoid bundling
the signal
lines with the power
lines.
(4)
If shielded
cables
are
used
lor signal lines and the power lines, or
if
the
signal
lines and Iha power lines are run in the individual metal conduits,
the
signal
lines are
effectively protected from propagation
of
noise.
If
peripheral device is connected to
the
same power supply where
the
inverter is
connected, noise generated by
the
inverter may
be
transmitted
to
the peripheral
d e v i
through
the
power
l i n e s
causing
malfunctioning
of the p e r i p h s r a l device. In
(1) Install a radio
noise
Mer (FR-BIF(-H)) in the power line (input
l i m )
of the
(2)
Install a
line noise
filter (FR-BSFO1) in
the
power line (inpuVoutpn in=)
d
the
If
a
CW
loop circuit
is
formed due
to the
wiring of a peripheral
device to
the
inverter,
leakage
c u m t may flow into the peripheral device through
the
grounding
occurs,
disconnect the grounding cable of the peripheral device.
, )
such a
case,
R
is
necessary to
take the following measures:
inverter.
inverter.
' )
cable
of the
inverter
and
caw8
matfunctioning of
the
peripheral equipment.
I f
this
-
112-
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