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(2)
Absolutely
avoid
connecting
a phase-advance
capacitor
and
surge
absorber
between
the
inverter
and
motor.
(3)
Insert
a circuit
breaker
into
the power
supply
side
to
protect
the
wires.
Do
not
use
a blade
type
switch
only
instead
of
the
circuit
breaker.
Phase
fault
may
result.
(4)
Use
a shielded
wire
for a signal
line,
and process
it as
shown
in Fig.
6 below.
The wire
length
should
be less
than
20m.
,
If the wire
length
unavoidably
exceeds
20m,
use
optional
VX
application
controller
CVD-E
(signal
isolation
converter).
Insulate
here.
'No earth
connection
is
required.
Connect
this
lead
i
Fig. 6
Shield
Processing
(5)
Select
a signal
line
switch
or relay
for weak
current
which
can be used
at 12V DC,
3 mA for control
circuit
terminals
except
for
AL1,
AL2
and
ALO.
(6)
Separate
the
inverter
signal
line
from
the
power
line
as
shown
in
Fig.
7 below.
If
cross-over
is
unavoidable,
however,
cross
them
perpendicularly
each
other.
-
19 -
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