Specifications

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103
trip due to surge over-current. This function is
especially useful for the applications with big load
inertia or step change of load.
F b.08 is a percentage of the inverter ’ s rated
current. F b.09 defines the decrease rate of output
frequency when this function is active. If F b.08 is
too small, overload fault may occur. If it is too big,
the frequency will change too sharply and
therefore, the feedback energy of motor will be too
large and may cause over-voltage fault. This
function is always enabled during acceleration or
deceleration. Whether the function is enabled in
constant
S peed running is determined by F b.10.
Note:
Note:
Note:
Note:
�
�
�
�
During
During
During
During auto
auto
auto
auto current
current
current
current limiting
limiting
limiting
limiting process,
process,
process,
process,
the
the
the
the inverter
inverter
inverter
inverter ’
’
’
’ s
s
s
s output
output
output
output frequency
frequency
frequency
frequency may
may
may
may
change;
change;
change;
change; therefore,
therefore,
therefore,
therefore, it
it
it
it is
is
is
is recommended
recommended
recommended
recommended
not
not
not
not to
to
to
to enable
enable
enable
enable the
the
the
the function
function
function
function when
when
when
when inverter
inverter
inverter
inverter
needs
needs
needs
needs to
to
to
to output
output
output
output stable
stable
stable
stable frequency
frequency
frequency
frequency
�
�
�
� During
During
During
During auto
auto
auto
auto current
current
current
current limiting
limiting
limiting
limiting process,
process,
process,
process, if
if
if
if
F
F
F
F b.08
b.08
b.08
b.08 is
is
is
is too
too
too
too low,
low,
low,
low, the
the
the
the overload
overload
overload
overload capacity
capacity
capacity
capacity
will
will
will
will be
be
be
be impacted.
impacted.
impacted.
impacted.
Function
Function
Function
Function
code
code
code
code
Name
Name
Name
Name Setting
Setting
Setting
Setting range
range
range
range
Fb.11
Selection of
overtorque
(OL3)
0~4 【 1 】
0 ： No detection
1 ： Valid detection of overtorque during running,
then continue running
2 ： Valid detection of overtorque during running,
then warning and stop
3 ： Valid detection of overtorque during constant
speed running, then continue running
4 ： Valid detection of overtorque during constant
speed running, then warning (OL3) and stop.
Function
Function
Function
Function
code
code
code
code
Name
Name
Name
Name Setting
Setting
Setting
Setting range
range
range
range
Fb.12
Detection
level of
overtorque
10.0%~200.0%
【 Depend on
the model 】
G model: 150%
P model: 120%
Function
Function
Function
Function
code
code
code
code
Name
Name
Name
Name Setting
Setting
Setting
Setting range
range
range
range