6. Control Functions and Parameter Settings
6-74
Table
No. Name Default
value
Min.
value
Max.
value
Unit Function
C22 - Overload
0 Overload setting
Constant torque
Variable torque
100.
100.
50.
50.
105.
100.
%
The C22-1, 2 data will be
limited by this value when this
value is changed.
1 0Hz overload
Constant torque
Variable torque
100.
100.
20.
20.
105.
100.
% The max. value is the value of
C22-2.
2 0.7 Base freq. overload
Constant torque
Variable torque
100.
100.
50.
50.
105.
100.
% The max. value is the value of
C22-1.
(Note 3) When the load characteristics are changed, the above parameters will be forcibly set to the
default values, so reset them when necessary.
(Note 4) For parameters other than above, the default value and setting range will not change when the
load characteristics are selected.
6-6-3 Overload Characteristics
The overload detection curve changes according to the load characteristics selection.
The overload characteristics for when the overload setting (C22-0) is 100% are shown below.
The motor rated current (B00-6) is the reference for the current value (%).
VT load characteristics
(C30-0=2)
CT load characteristics
(C30-0=1)
(%) Output current
Note 2
Note 1
Overload characteristics
(Note 1) When the constant torque lead characteristics are selected, the trip will occur at the following:
(1) When 1.0Hz or less, at the reverse time interval characteristics of 75%, 60s of the constant
torque rated current.
(2) When 155% of the constant torque rated current is exceeded, at the reverse time interval
characteristics of 160%, 10S and 170%, 2.5S.
(Note 2) When the variable torque load characteristics are selected, the trip will occur at the following:
(1) When 1.0Hz or less, at the reverse time interval characteristics of 75%, 24s of the variable
torque rated current.
(2) When 120% of the variable torque rated current is exceeded, at the reverse time interval
characteristics of 125%, 7.5S and 135%, 0.94S.
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