HSB-OL
High-slip Braking OL
The
output
frequency
did
not
change
for
longer
than
the
time
set
in
N3-04.
The
inertia
returned
to
the
load
is
too
large.
•Make
sure
the
load
is
an
inertial
load.
•Set
the
system
so
that
the
decel-
eration
time
that
does
not
pro-
duce
0
V
is
120 s
or
less.
Undertorq
Det
1
Undertorque Detected 1
There
has
been
a
current
less
than
the
setting
in
L6-02
for
longer
than
the
setting
in
L6-03.
-
•Make
sure
that
the
settings
in
L6-02
and
L6-03
are
appropri-
ate.
•Check
the
mechanical
system
and
correct
the
cause
of
the
overtorque.
Undertorq
Det
2
Undertorque Detected 2
There
has
been
a
current
less
than
the
setting
in
L6-05
for
longer
than
the
setting
in
L6-06.
-
•Make
sure
that
the
current
set-
ting
in
L6-05
and
time
setting
in
L6-06
are
appropriate.
•Check
the
mechanical
system
and
correct
the
cause
of
the
overtorque.
Overspeed
Det
Overspeed
The
speed
has
been
greater
than
the
setting
in
F1-08
for
longer
than
the
setting
in
F1-09.
Overshooting/Undershooting
are
occurring.
Adjust
the
gain
again.
The
reference
speed
is
too
high.
Check
the
reference
circuit
and
reference
gain.
The
settings
in
F1-08
and
F1-09
aren't
appropriate.
Check
the
settings
in
F1-08
and
F1-09.
PG
Open
PG Disconnection Detected
PG
pulses
were
input
when
the
Inverter
was
outputting
a
frequency
(soft
start
output
≥
E1-09).
There
is
a
break
in
the
PG
wiring.
Fix
the
broken/disconnected
wir-
ing.
The
PG
is
wired
incorrectly. Fix
the
wiring.
Power
isn't
being
supplied
to
the
PG. Supply
power
to
the
PG
properly.
-
Check
for
open
circuit
when
using
brake
(motor).
Speed
Deviation
Excessive Speed Deviation
The
speed
deviation
has
been
greater
than
the
setting
in
F1-10
for
longer
than
the
setting
in
F1-11.
The
load
is
too
heavy. Reduce
the
load.
The
acceleration
time
and
deceleration
time
are
too
short.
Lengthen
the
acceleration
time
and
deceleration
time.
The
load
is
locked. Check
the
mechanical
system.
The
settings
in
F1-10
and
F1-11
aren't
appropriate.
Check
the
settings
in
F1-10
and
F1-11.
-
Check
for
open
circuit
when
using
brake
(motor).
Out
of
Control
Control Fault
The
torque
limit
was
reached
continu-
ously
for
3
seconds
or
longer
during
a
deceleration
stop
during
open-loop
vector
control.
-Check
the
motor
constants.
Feedback
Loss
PID Feedback Reference Lost
A
PID
feedback
reference
loss
was
detected
(b5-12
=
2)
and
the
PID
feed-
back
input
was
less
than
b5-13
(PID
feedback
loss
detection
level)
for
longer
than
the
time
set
in
b5-14
(PID
feedback
loss
detection
time).
--
Table 7.1 Fault Displays and Processing (Continued)
Display Meaning Probable Causes Corrective Actions
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