CHINSC ELECTRIC SVF-G7 Series, Руководство по эксплуатации

Страница: 124 / 209

SVF-G7 Series Frequency Inverter Operation Manual Chapter 6 Functional Parameter Detail
119
code F2.03~F2.08.
Figure 6-7 Illustration of V/F curve
F2.01
F2.01
F2.01 F2.01Torque
Torque
Torque Torque b
b
b boost
oost
oost oost Default
Default Default Default:::: 0.0 0.0 0.0 0.0
％
Setting
Setting Setting
Setting sssscope:
cope: cope:
cope: 0.0
0.0 0.0
0.0
％
:::: automatic
automatic automatic
automatic
torque torque torque torque boost boost boost boost 0.1 0.1 0.1 0.1
～
30.0 30.0 30.0 30.0
％
F2.02 F2.02 F2.02 F2.02
Cut-off Cut-off Cut-off Cut-off
ffffrequency requency requency requency o o o offff
ttttorque
orque orque
orque B
B B
Boost
oost oost
oost
Default Default Default Default:::: 20.0 20.0 20.0 20.0
％
Setting Setting Setting Setting sssscope: cope: cope: cope: 0.0 0.0 0.0 0.0
～
50.0 50.0 50.0 50.0
％
(motor (motor (motor (motor
rated
rated rated
rated frequency)
frequency) frequency)
frequency)
Torque boost is mainly used in below the cut-off frequency (F2.02), after
boost, the V/F curve after boost is shown in fig. 6-8, the torque boost can
improve the V/F low frequency’s torque characteristics.
Select the value of torque according the size of loads. The big loads can
select a bigger boost, but the torque boost can not be set too big. If the
torque boost is too large, motor will run with over excitation, the output
current will increase, the motor will be easy to overheat, the drive's output
current will be big, the efficiency will reduce.
When the torque boost is set to 0.0%, the inverter is auto torque boost.
Cut-off point of torque boost: the linear V/F curve is valid, under this
frequency point, the torque boost is valid, over the point; the torque boost