128
This group of parameters are used to define motor V/F setting mode to cater for different load characteristic. Five fixed
curves and one user-defined curve can be selected according to the setting of F5.00.
0
:
linear curve
Linear curve is suitable for common constant torque type load, output voltage and output frequency are in linear
relation, as straight line 0 showed in Fig. F5-1.
1
:
decreasing torque curve 1
(
power of 1.3
)
Decreasing torque curve 1, output voltage value is output frequency value to the power of 1.3, as curve 1 showed in Fig.
F5-1.
2
:
decreasing torque curve 2
(
power of 1.5
)
Decreasing torque curve 2, output voltage value is output frequency value to the power of 1.5, as curve 2 showed in
Fig. F5-1.
3
:
decreasing torque curve 3
(
power of 1.7
)
Decreasing toque curve 3, output voltage value is output frequency value to the power of 1.7, as curve 3 showed in
Fig. F5-1.
4
:
square curve
Square curve is suitable for square torque type load such as draught fan and water pump to achieve the optimum
energy-saving effect. Output voltage value is output frequency value to the second power, as curve 4 showed in Fig.
F5-1.