24.
TROUBLESHOOTING
Mee8urw
Route
If
the
sbal
lines
are run in parallel to the power lines or
if
the
signal lines are
brnaed
with the power lines, nW (electromagnetically induced noise,
electrostatically
Wed
noise)
may propagate to
the
signal
lines causing
mahnctioning. In such
cases,
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
devi
through
the
power
lines
causing
malfunctioning
of
the
periphsral device.
In
(1) Install a radio
noise
Mer (FR-BIF(-H)) in the power line (input lim)
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
cumt 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.
If
this
-
112-
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