sh030106u.pdf - 第233页

7. SPEC IAL ADJUSTMEN T FUNCT IONS 7 - 4 (2) Parameter (a) Machine r esonanc e suppr ess ion filter 1 ([Pr. PB13]/[Pr . P B1 4]) Set the notch frequ ency, no tch dep th and notch widt h of the mac hine r esona nce suppre…

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7. SPECIAL ADJUSTMENT FUNCTIONS
7 - 3
(1) Function
The machine resonance suppression filter is a filter function (notch filter) which decreases the gain of the
specific frequency to suppress the resonance of the mechanical system. You can set the gain
decreasing frequency (notch frequency), gain decreasing depth and width.
Response of
mechanical system
Notch
characteristics
Machine resonance point
Notch frequency
Frequency
Frequency
Notch width
Notch depth
You can set five machine resonance suppression filters at most.
Filter Setting parameter Precaution
Parameter that is
reset with vibration
tough drive
function
Parameter
automatically
adjusted with one-
touch tuning
Machine resonance
suppression filter 1
PB01/PB13/PB14
The filter can be set automatically with
"Filter tuning mode selection" in [Pr.
PB01].
PB13 PB01/PB13/PB14
Machine resonance
suppression filter 2
PB15/PB16 PB15 PB15/PB16
Machine resonance
suppression filter 3
PB46/PB47 PB46/PB47
Machine resonance
suppression filter 4
PB48/PB49
Enabling the machine resonance
suppression filter 4 disables the shaft
resonance suppression filter.
Using the shaft resonance suppression
filter is recommended because it is
adjusted properly depending on the
usage situation.
The shaft resonance suppression filter is
enabled for the initial setting.
PB48/PB49
Machine resonance
suppression filter 5
PB50/PB51
Enabling the robust filter disables the
machine resonance suppression filter 5.
The robust filter is disabled for the initial
setting.
PB51
7. SPECIAL ADJUSTMENT FUNCTIONS
7 - 4
(2) Parameter
(a) Machine resonance suppression filter 1 ([Pr. PB13]/[Pr. PB14])
Set the notch frequency, notch depth and notch width of the machine resonance suppression filter 1
([Pr. PB13]/[Pr. PB14])
When you select "Manual setting (_ _ _ 2)" of "Filter tuning mode selection" in [Pr. PB01], the setting
of the machine resonance suppression filter 1 is enabled.
(b) Machine resonance suppression filter 2 ([Pr. PB15]/[Pr. PB16])
To use this filter, select "Enabled (_ _ _ 1)" of "Machine resonance suppression filter 2 selection" in
[Pr. PB16].
How to set the machine resonance suppression filter 2 ([Pr. PB15]/[Pr. PB16]) is the same as for the
machine resonance suppression filter 1 ([Pr. PB13]/[Pr. PB14]).
(c) Machine resonance suppression filter 3 ([Pr. PB46]/[Pr. PB47])
To use this filter, select "Enabled (_ _ _ 1)" of "Machine resonance suppression filter 3 selection" in
[Pr. PB47].
How to set the machine resonance suppression filter 3 ([Pr. PB46]/[Pr. PB47]) is the same as for the
machine resonance suppression filter 1 ([Pr. PB13]/[Pr. PB14]).
(d) Machine resonance suppression filter 4 ([Pr. PB48]/[Pr. PB49])
To use this filter, select "Enabled (_ _ _ 1)" of "Machine resonance suppression filter 4 selection" in
[Pr. PB49]. However, enabling the machine resonance suppression filter 4 disables the shaft
resonance suppression filter.
How to set the machine resonance suppression filter 4 ([Pr. PB48]/[Pr. PB49]) is the same as for the
machine resonance suppression filter 1 ([Pr. PB13]/[Pr. PB14]).
(e) Machine resonance suppression filter 5 ([Pr. PB50]/[Pr. PB51])
To use this filter, select "Enabled (_ _ _ 1)" of "Machine resonance suppression filter 5 selection" in
[Pr. PB51]. However, enabling the robust filter ([Pr. PE41: _ _ _ 1]) disables the machine resonance
suppression filter 5.
How to set the machine resonance suppression filter 5 ([Pr. PB50]/[Pr. PB51]) is the same as for the
machine resonance suppression filter 1 ([Pr. PB13]/[Pr. PB14]).
7. SPECIAL ADJUSTMENT FUNCTIONS
7 - 5
7.1.2 Adaptive filter II
POINT
The machine resonance frequency which adaptive filter II (adaptive tuning) can
respond to is about 100 Hz to 2.25 kHz. As for the resonance frequency out of
the range, set manually.
When adaptive tuning is executed, vibration sound increases as an excitation
signal is forcibly applied for several seconds.
When adaptive tuning is executed, machine resonance is detected for a
maximum of 10 seconds and a filter is generated. After filter generation, the
adaptive tuning mode automatically shifts to the manual setting.
Adaptive tuning generates the optimum filter with the currently set control gains.
If vibration occurs when the response setting is increased, execute adaptive
tuning again.
During adaptive tuning, a filter having the best notch depth at the set control gain
is generated. To allow a filter margin against machine resonance, increase the
notch depth in the manual setting.
Adaptive vibration suppression control may provide no effect on a mechanical
system which has complex resonance characteristics.
Adaptive tuning in the high accuracy mode is available with servo amplifiers with
software version C5 or later. The frequency is estimated more accurately in the
high accuracy mode compared to the standard mode. However, the tuning
sound may be larger in the high accuracy mode.
(1) Function
Adaptive filter II (adaptive tuning) is a function in which the servo amplifier detects machine vibration for
a predetermined period of time and sets the filter characteristics automatically to suppress mechanical
system vibration. Since the filter characteristics (frequency, depth) are set automatically, you need not
be conscious of the resonance frequency of a mechanical system.
Response of
mechanical systemNotch depth
Machine resonance point
Notch frequency
Frequency
Frequency
Response of
mechanical systemNotch depth
Machine resonance point
Notch frequency
Frequency
Frequency
When machine resonance is large and
frequency is low
When machine resonance is small and
frequency is high