0: Straight line V/F curve; applying to the constant
torque load
1: Multi-dots V/F curve
2: 1.3
th
power low torque V/F curve
3: 1.7
th
power low torque V/F curve
4: 2.0
th
power low torque V/F curve
Curves 2~4 apply to the torque loads such as fans
and water pumps. Users can adjust according to the
features of the loads to achieve a best
energy-consuming effect.
5: Customized V/F (V/F separation); on this mode, V
and f can be separated and f can be adjusted through
the frequency reference channel set by P00.06 or the
voltage reference channel set by P04.27 to change
the feature of the curve.
Note: V
b
in the below picture is the motor rated
voltage and f
b
is the motor rated frequency.
Torque boost to the output voltage for the features of
low frequency torque. P04.01 is for the Max. Output
voltage V
b
.
P04.02 defines the percentage of close frequency of
manual torque to f
b
.
Torque boost should be selected according to the
load. The bigger the load is, the bigger the boost is.
Too big torque boost is inappropriate because the
motor will run with over-magnetic, and the current of
the inverter will increase to raise the temperature of
the inverter and decrease the efficiency.
To Next Page
Loading...
