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Symptom
of
malfunction
Check
point
:
Suggested
remedy
No
inverter
op- | Check
that
the
[STOP]
key on
the
digital
operation
eration
is
panel
is not
depressed
in "Terminal"
mode.
possible.
Stop the operation command
from "Terminal"
once,
and
input
the
operation
command
once
again.
| Check that
DB command
is not
input
to optional
PC | After
breaking' DB command,
input
the
operation
command.
board
(IA~-TWK).
Check
that
FRS
command
is not
input.
a
After
breaking
FRS
command,
input
the
operation
command.
Check
that
the
frequency
setting
is not
0.
Set
the
fequency
to a desired
one.
Press
the
key to select
the monitor mode.
Check
that
the
digital
operation
panel
display
does
not
indicate
the
function
mode.
Check
for
tripping.
pping
Check
that the speed
command
is not
input
between
O - L or OI ~ L when
the
frequency
setting
desig-
nation
method
(F-SET-M)
is "Terminal".
Review
the
speed
command
circuit.
Set
SPEED
1 -
3 to a desired
frequency
or
cut
the
command
to CF1
and
CF2.
A command
is input
to multistage
speed
input
terminal
CF1,
CF2,
but
check
that
SPEED
1 -
SPEED
3 setting
is not
OHz.
Check
that
RS command
is not
input.
Cut
RS command.
With
internal
command
(ope-key)
mode
selected,
Check
the
operation
mode.
(Input
the
operation
command
is external
command
input
or with
external
command | in the
preset
mode.)
(Terminal)
mode
selected,
isn't
the
command
input
from
the
digital
operation
panel?
Check
that
the
jogging
command
is not
inter-
* During
internal
command
(ope-key)
mode:
rupted
during
jogging
operation.
FD
RE
Press
the
stop
key,
the
press
the
or
for operation.
* During
external
command
(Terminal)
mode:
Stop
the operation
command
once,
and
input
the
op-
eration
command
again.
Check
that
the
operation
command
is not
input
The
jogging
command-OFF
and
operation
command-ON
within
100 ms
after
interrupting
the
jogging
timing
should
be more
than
100 ms.
command.
FWD
REV
* Check
that
the
>
[RUN
keys
are
not
de-
Be sure
to make
arrangements
so as
to perform
either
forward
cr reverse
operation.
pressed
at
the
same
time
in the
internal
com-
mand
(ope~key)
mode.
* Check
that
the
external
command
(Terminal)
mode
FW/RV
terminals
are
not
input
simultaneously.
* Check
that
the
setting
frequency
is not
less
Set
the
frequency
to more
than
the
lowest
frequency.
than
the
lowest
frequency.
No jogging
+ Check
that
the
jogging
command
is not
input
Stop
operation
once,
and
turn
the
jogging
command
ON
operation
is
during
normal
operation.
more
than
2 seconds,
then
input
either
forward
or
possible.
reverse
operation
command.
« Check
that
the
relationship
between
the jog-
The
relation
should
be JOG-F
z Fmin.
ging
frequency
setting
(JOG-F)
and
the
lowest
frequency
setting
(Fmin)
is not
JOG-F
< Fmin.
* Check
that
the
relationship
between
the
jog-
The
relation
should
be JOG-F
2 L-LIM-F.
~
ging
frequency
setting
(JOG-F)
and
the
frequency
lower
limiter
setting
(L-LIM-F)
is
not
JOG-F
< L-LIM-F.
o When
it
is desired
to return
the value
set
on
the
digital
operation
panel
to the
initial
setting
when
the
unit
is
shipped
from
the
factory,
refer
to
para.
9.3
(5).
- 103 -
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