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SDH Series Manual
6.3.6 Resonance suppression filter
(1)Auto high frequency resonance suppression function
:
When the mechanism with low rigidity generates resonance by reason of the large bandwidth or the large rigidity
setting value of the servo drive. If the mechanism factors could not be adjusted, Shihlin servo drive provides 3 resonance
filter frequencies and 1 resonance suppression low-pass filter for users to make adjustment. Some parameters related to
resonance suppression filter are introduced below.
Name
Abbr.
Sign Setting range
Unit
Initial value
Control mode
Auto resonance suppression mode
ANCF PB27
0~2
-
1
Pt、Pr、S、T
Auto resonance detection level
ANCL PB28
1~300
%
50
Pt、Pr、S、T
Machine resonance suppression filter (1)
NHF1 PB01
50~4000
Hz
1000
Pt、Pr、S、T
Machine resonance suppression attenuation (1) NHD1 PB02
0~32
dB
0
Pt、Pr、S、T
Machine resonance suppression filter (2)
NHF2 PB21
10~4000
Hz
1000
Pt、Pr、S、T
Machine resonance suppression attenuation (2) NHD2 PB22
0~32
dB
0
Pt、Pr、S、T
Machine resonance suppression filter (3)
NHF3 PB25
10~4000
Hz
1000
Pt、Pr、S、T
Machine resonance suppression attenuation (3) NHD3 PB26
0~32
dB
0
Pt、Pr、S、T
Resonance suppression low-pass filter
NLP
PB03
0~10000
0.1ms
10
Pt、Pr、S、T
►Manual suppression method
:
There are three sets of auto resonance suppression filter provided by SDH drive which one is PB01 and PB02, the
second one is PB21 and PB22 and the third one is PB25 and PB26; And there are also one set of low pass auto reso
-
nance suppression filter which is PB03. PB01
、
PB21
、
PB25 are suppression frequencies; PB02
、
PB22
、
PB26 are
suppression attenuation rates and PB03 is time constant.
If resonance frequency of machine is known, users can set the frequency of filter and increase the
attenuation
rate
step by step in order to have no resonance (Note 2) or slowly increasing low-pass filter time constant (reduce bandwidth
of the low-pass filter) to have no resonance, but this will reduce the bandwidth of the system.
►Auto suppression method
:
There are two sets of auto resonance suppression filter provided by SDH drive which one is PB01 and PB02, the
second one is PB21 and PB22; PB01
、
PB21 are suppression frequencies; PB02
、
PB22 are suppression attenuation
rates.
When resonance occurs, users who do not know resonance frequency can set PB27 to be 1 or 2 to operate the
auto resonance suppression. The drive will detect resonant frequency and attenuation rate automatically, and then set
detected result in the first filter and the second filter (Note 1).
If PB27 is set to 1, PB27 will automatically set back to 0 after finishing detecting; if PB27 is set to 2, it will continue
to detect the resonance and suppression. Please refer to the following table for the parameter flow of PB27.
When PB27 is set to 1 or 2 and the resonance still persists, please check if the value of PB02 or PB22 is 32, if one
of it is 32 that mean this resonance could not be suppressed by filter efficiency. Please reduce system bandwidth and
estimate again in such case. If the value is less than 32 and bigger than 0 means the resonant frequency have been
detected in auto detection mode but probably the attenuation is not enough to let have no resonance (Note 1). Users
can increase attenuation rate (Note 2) in such case. If the PB02 or PB22 is 0 means there is no resonance frequency be
detected, it is possible from the detecting level (PB28) is too high. It is recommended to reduce the detecting level and
set PB27 to be 1 or 2 to detect again. Please see the chart below for auto resonance suppression flow.
Note 1. Drive will detect the most suitable not the best attenuation rate to ensure stability of the system
Note 2. Note that when adjust the attenuation rate manually, the setting value is too large may cause system
instability.
PB27 Parameter flowchart
PB27 Current value PB27 Desired value
Function
0
1
Clear the setting value of PB01~02, 21~22 and enable auto resonance
suppression function.
0
2
Clear the setting value of PB01~02, 21~22 and enable auto resonance
suppression function continuously.
1
0
Save the setting value of PB01~02, 21~22 and disable auto resonance
suppression function.
1
1
Clear the setting value of PB01~02, 21~22 and enable auto resonance
suppression function.
1
2
Do not clear the setting value of PB01~02, 21~22 and enable auto resonance
suppression function continuously.
2
0
Save the setting value of PB01~02, 21~22 and disable auto resonance
suppression function.
2
1
Clear the setting value of PB01~02, 21~22 and enable auto resonance
suppression function.
2
2
Do not clear the setting value of PB01~02, 21~22 and enable auto resonance
suppression function continuously.
Содержание SDH Series
Страница 1: ...SDH Series Manual ...
Страница 2: ......
Страница 22: ...13 Chapter 3 100W 1kW Shihlin servo driver Power source 100W 15KW 3Φ200 230Vac ...
Страница 190: ...181 Chapter 12 12 5 Dimensions of low inertia motor SMH L010 SMH L020 L040 SMH L075 ...
Страница 196: ...187 Chapter 13 As load torque is 300 operating time is 2 23S As load torque is 300 operating time is 2 28S ...
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Страница 220: ...2016 ...