User Manual of EM730/EM730E Series Inverter
186
motor.
Function
code
Function code
name
Parameter description
Unit
Default
setting
Attribute
F05.00
V/F curve
setting
0: straight line V/F
1: multi-point broken line V/F
2: 1.3-power V/F
3: 1.7-power V/F
4: square V/F
5: VF complete separation mode (Ud
= 0, Uq = K * t = voltage of
separation voltage source)
6: VF semi-separation mode (Ud = 0,
Uq = K * t = F/Fe * 2 * voltage of
separation voltage source)
0
〇
F05.00=0: linear V/F
It is suitable for ordinary constant-torque loads.
F05.00=1: multi-point V/F
It is suitable for special loads such as dehydrators, centrifuges and cranes. Any V/F
relationship curve can be obtained by setting the parameters F05.01 to F05.06.
F05.00=2/3: 1.3
th
power/1.7
th
power of V/F
It is a VF curve between the linear VF and square VF.
F05.00=4: square V/F
It is suitable for centrifugal loads such as fans and pumps.
F05.00=5:
VF complete separation mode
In this case, the output frequency and output voltage of the inverter are independent of each
other. The output frequency depends on the frequency source, and the output voltage is
determined by F05.07 (VF separation voltage source).
The VF complete separation mode is usually applied in induction heating, inverter power
supply, torque motor control, etc.
F05.00=6:
VF semi-separation mode
In this case, V and F are proportional, but their proportional relationship can be set by the
voltage source F05.07. In addition, the relationship between V and F is also related to the rated
voltage and rated frequency of the motor in the F1 group.
Assuming that the voltage source input is X (X is 0 to 100%), the relationship between the
output voltage V and frequency F of the inverter is:
