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12. TROUBLESHOOTING AND MESSAGE CONTENTS
The
inverter
will
operate
as
shown
in Table
10 below
if
abnormal.
Locate
the
cause
and
take
corrective
measures
promptly
before
re-
starting
operation.
Table
10
Fault Message and Diagnosis
F
a
Symptom
of malfunction
P|
BS lA wl >
S7=lo*
| ez
Display
on
É
Cause
for
fault
Check
pot
s
d
a
&
sb y
F =
digital
E v
(Message
contents)
eck
porns
uggeste
remecy
£0
operation
4
a
eola
panel
i
m
=
=
y
E
+
v
&
|eela
(7 ERROR
E
É
(2
moja
EZI?)
i
Over
V.
UW | DC smoothing
circuit|
A | Check
for
sudden
Increase
the decele-
- Overvoltage
deceleration.
ration
time.
Check
that
the motor
|The motor
cannot
be
is not
rotated
from
applied
to continuous
the
load
side.
regenerative
load.
OC. ACCEL
UY | Overcurrent
during
A | Check
for
sudden
Increase
the
motor
acceleration
acceleration.
acceleration
time.
(overcurrent
at
acceleration)
Check
for
output
Check
for
the
output
shortcircuit
or
line
(motor)
and
motor
ground
fault.
shortcircuit.
Check
that
torque
Reduce
the
torque
boost
is not
too
high.|
boost.
Check
that
the motor
| Check
the motor
or
is not
locked.
load.
Check
that
jogging
Reduce
the
jogging
frequency
is
too
high.}|
frequency.
1
cae
—
OC. DECEL
vw | Overcurrent
during
A | Check
for
sudden
Increase
the
motor
deceleration
deceleration.
deceleration
time.
(Overcurrent
at
deceleration)
Check
for
output
Check
the
output
line
shortcircuit
or
motor
shortcircuited.
ground
fault.
|
m
OC. DRIVE
W | Overcurrent
during
A | Check
for
sudden
Eliminate
sudden
constant
operation
change
in load.
changes
in load.
of motor
(Overcurrent
during
Check
for
output
Check
the
output
line
operation)
shortcircuit
and
motor
shortcircuit.
ground
fault.
Over
L.
wW | Inverter
overload
A | Check
that
the
load
Reduce
the
load
(Overloaded
is not
too
heavy.
factor.
operation)
Check
that
the
Adjust
to
a proper
electronic
thermal
level.
level
is correct
{net
changed).
i
Pa
i
Si
- 90 -
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