8000m Series
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deviation because of load in V/F control, and make sure that the speed of electric
motor can remain stable when the load changes. When V/F speed deviation
compensation coefficient is set as 100%, this means if the electric motor is in rated
load, the compensated speed deviation will be the rated slip of the electric motor.
As for the rated speed deviation of the electric motor, the VFD will get the value
by automatic calculation of the rated frequency of electric motor and rated speed of
F2 group. Refer to the following principles to adjust the speed deviation
coefficient:when the load is the rated load, and set the speed deviation coefficient
as 100%, the rotational speed of the electric motor driven by VFD will basically
close to the given speed.
When the electric motor is no-load or is operating in light load, by testing the load
current and adjusting output voltage properly to realize the purpose of automatic
energy saving.
Note: this function is specially effective for loads like fans, pumps, etc.
Most electric motors are easy to have current oscillations when operate in some
certain frequencies, some of the motors may not operate stably,or even cause
F4.10
Energy-saving selection Factory Setting 0
Setting Options
0 Disabled
1 Enabled automatically
F4.11 Reserved
F4.12
Low-frequency threshold of restraining
oscillation
Factory Setting 1
Setting Options
0～10
F4.13
High-frequency threshold of restraining
oscillation
Factory Setting 0
Setting Options
0～10
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