- 74 -
Fb
：
Rated motor operating frequency
Figure 6-6 multi point V/F Curve setting diagram
P3-10
VF Over-excitation
gain
Factory default
64
Set range
0
～
200
In the inverter deceleration process, the over-excitation control can inhibit the bus voltage
rise, to avoid over-voltage failure. The greater the over-excitation gain, the stronger the
suppression effect.
It is necessary to increase the over discharge gain when the inverter decelerates the over
voltage alarm. But the over-excitation gain is too large, easily lead to increased output
current, the need to trade in the trade-off.
In the case of a small increase in inertia, there is no voltage rise in the motor deceleration,
it is recommended to set the over-excitation gain of 0; for the case of a braking resistor, it
is also recommended that the over-excitation gain be set to zero.
P3-11
VFO oscillation
suppression gain
Factory default
40
Set range
0
～
100
The gain of the selection method is to effectively suppress the oscillation under the
premise of taking as small as possible, so as not to adversely affect the VF operation.
Select this gain to 0 when there is no oscillation of the motor. Only when the motor is
significantly oscillating, only need to increase the gain, the greater the gain, the more
obvious inhibition of oscillation.
When using the suppression oscillation function, the motor rated current and no -load
current parameters are required to be accurate, otherwise the VF oscillation suppression
effect is not good.
P3-13
VF Separate voltage source
Factory
default
0
Set range
0
：
number setting
（
P3-14
）
1
：
AI1 2
：
AI2
3
：
AI3 4
：
High speed pulse input setting
（
S5
）
5
：
Multi - step instructions
6
：
Simple PLC
7
：
PID 8
：
Communication given
100.0% Corresponds to the motor rated voltage
（
P1-02
、
A2-
02
）
P3-14
VF Separate voltage digital
setting
Factory
default
0V
Set range
0V
～
motor rated voltage
