
SVF-G7 Series Frequency Inverter Operation Manual
Chapter 6 Functional Parameter Detail
122
The function code of suppression oscillation is for V/F control, the common
motor with no-load or light-load often has current oscillation to lead the
motor’s abnormal operation, the serious can cause drive over current. When
the F2.11 is selected to 0, the suppressing oscillation function is enabled,
the drive will suppress the motor’s occurring oscillation according to the
parameters of functions F2.12~F2.15.
F2.12
F2.12
F2.12
F2.12
Suppress
Suppress
Suppress
Suppress
o
o
o
oscillation
scillation
scillation
scillation
llllow-frequency
ow-frequency
ow-frequency
ow-frequency tttthreshold
hreshold
hreshold
hreshold
Default:
Default:
Default:
Default: 5
5
5
5
Setting
Setting
Setting
Setting sssscope:
cope:
cope:
cope: 0
0
0
0
~
500
500
500
500
F2.13
F2.13
F2.13
F2.13
Suppress
Suppress
Suppress
Suppress
o
o
o
oscillation
scillation
scillation
scillation
llllow-frequency
ow-frequency
ow-frequency
ow-frequency tttthreshold
hreshold
hreshold
hreshold
Default:
Default:
Default:
Default: 100
100
100
100
Setting
Setting
Setting
Setting sssscope
cope
cope
cope:::: 0
0
0
0
~
500
500
500
500
When most of motors run in some frequency band, the current oscillation will
easily occur, light case is that the motor can not stable operate, the
serious situation will lead the drive over-current.
When F2.11 is set to 0, suppress oscillation is valid. When F2.12 and F2.13
have small reference values, the effect of the suppress oscillation is
evidence, the addition of the current is evidence; if the settings is large,
the effect of suppress oscillation is weak.
F2.14
F2.14
F2.14
F2.14
Amplitude
Amplitude
Amplitude
Amplitude
llllimit
imit
imit
imit
o
o
o
offff
ssssuppress
uppress
uppress
uppress o
o
o
oscillation
scillation
scillation
scillation
Default
Default
Default
Default:::: 5000
5000
5000
5000
Setting
Setting
Setting
Setting sssscope:
cope:
cope:
cope: 0
0
0
0
~
10000
10000
10000
10000
When suppress oscillation, the parameter can be used to limit the boost value
of big voltage.
F2.15
F2.15
F2.15
F2.15
Boundary
Boundary
Boundary
Boundary
ffffrequency
requency
requency
requency
b
b
b
between
etween
etween
etween
h
h
h
high
igh
igh
igh
a
a
a
and
nd
nd
nd
llllow
ow
ow
ow
ffffrequency
requency
requency
requency
o
o
o
offff
ssssuppress
uppress
uppress
uppress o
o
o
oscillation
scillation
scillation
scillation
Default:
Default:
Default:
Default:
12.50Hz
12.50Hz
12.50Hz
12.50Hz
Setting
Setting
Setting
Setting sssscope:
cope:
cope:
cope:
0.00
0.00
0.00
0.00
~
F0.05
F0.05
F0.05
F0.05
F2.15 is the boundary of the function codes F2.12 and F2.13.
6.4 F3 Group Vector and Torque Control Parameter