Chapter IV Function Parameter Table
41
Parameter
Code
Parameter
name
Parameter detailed description
Minimum
Unit
Factory
value
Change
F1.17
V/F curve
setting
The V/F setting mode is defined in this
function code, to meet the needs of
different load characteristics. According
to the definition, you can select 4 fixed
curves and 1 custom curve.
0: Straight line V/F, as shown in curve 0
in the figure.
1: User-defined V/F curve, see F1.18~
F1.23 function code setting for details.
2: Reduced torque characteristic curve 1
(2.0 power), as shown in curve 1 in
the figure.
3: Reduced torque characteristic curve 2
(1.7 power), as shown in curve 2 in
the figure.
4: Reduced torque characteristic curve 3
(1.2 power), as shown in curve 3 in
the figure.
Note: Curves 1, 2, and 3 are suitable for
variable torque loads of fans and
pumps. Users can adjust according to
the load characteristics to achieve the
best energy saving effect.
1
0
×
F1.18
V/F
frequency
value F1
F1.18 set range: 0.00
～
F1.20
F1.19 set range: 0
～
F1.21
F1.20 set range: F1.18
～
F1.22
F1.21 set range: F1.19
～
F1.23
F1.22 set range: F1.20
～
F3.04
F1.23 set range: F1.21
～
100.0%
1.
When the F1.17V/F curve is set to 1, the
user can customize the V/F curve through
F1.18
～
F1.23, as shown in the figure. The
V/F curve is defined by adding (V1, F1),
0.01Hz
12.50Hz
×
F1.19
V/F
voltage
value V1
0.1%
25.0%
×
F1.20
V/F
frequency
value F2
0.01Hz
25.00Hz
×
F1.21
V/F
voltage
value V2
0.1%
50.0%
×
F1.22
V/F
frequency
value F3
0.01Hz
37.50Hz
×