YASKAWA yasnac i80m

4.3
POWER
SUPPLY
Although
composite
power
supplies
(CPS-12N)
for
control
are
provided
with
various
protective
functions,
it
will
be
necessary
to contact
mainte¬
nance
personnel.
immediately
after
checking
the
following
items
if
an
abnormal
situation
arises such
as
inability
to
switch
ON
NC
power.
(1)
The
"SOURCE”
(green)
LED
goes
out
(I)
Check
whether
the main circuit breaker
of
the machine
or
the
factory
has
tripped
or
if
there is
an
open
phase.
©
Trouble
may
be
considered
in
the
composite
power
supply
itself
for
control.
(2)
"
+
5,
±
12V”
LED
(red)
lights
<P
This
lights
when
overcurrent
due
to
a
short
circuit
in
the
+
5V
or
±
12V,
or
when
a
+
5V
overvoltage
is
detected.
©
If
overcurrent
is the
cause
of
the
failure,
the
power
can
be
turned
ON
again
by switching
power
on
the
cause.
(Cÿ
after
removing
©
If
+
5V
overvoltage
is
the
cause,
switch
power
ON
again
after
first
that the
“SOURCE”
LED
is
out
by
setting
the
main
breaker
to
OFF
once.
(3)
"
+
24V”
LED
(red)
lights
(P
This
LED
lights
if
overcurrent
due
to
a
short circuit
in
the
+
24V
output
is detected.
E.
tgJ
Switch
power
ON
failure.
after
removing
the
cause
of
the
(4)
“OHT"
LED
(red)
lights
(P
This
LED
lights
when
abnormal
temperature
rise
of
internal
parts
is
detected.
©
Switch
power
ON
°(#L)
failure.
after
removing
the
cause
of
the
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