7 - 9
7. SPECIAL ADJUSTMENT FUNCTIONS
(2) Parameters
Set the machine resonance suppression filters by the parameters indicated in the following table.
Item
Parameters to be set
Note
Notch frequency
Notch depth and width
Machine resonance
suppression filter 1
Parameter No. PB13
Parameter No. PB14
The set values are valid when "manual mode" is
selected in the adaptive tuning mode
(parameter No. PB01).
Machine resonance
suppression filter 2
Parameter No. PB15
Parameter No. PB16
The set values are always valid regardless of
the set value of the adaptive tuning mode
(parameter No. PB01).
Machine resonance
suppression filter 3
Parameter No. PB38
Parameter No. PB39
POINT
The machine resonance suppression filter is a delay factor for the servo system.
Hence, vibration may increase if an improper resonance frequency or an
excessively deep notch is set.
If the frequency of machine resonance is unknown, decrease the notch
frequency from higher to lower. Set the notch frequency at the point where
vibration is minimal.
A deeper notch has a higher effect on machine resonance suppression but
increases a phase delay and may increase vibration.
A wider notch has a higher effect on machine resonance suppression but
increases a phase delay and may increase vibration.
7.2.4 Advanced vibration suppression control
(1) Operation
Vibration suppression control is used to further suppress load side vibration, such as workpiece end
vibration and base shake. The motor side operation is adjusted for positioning so that the machine does not
shake.
Vibration suppression control OFF
(Normal control)
Motor end
Machine end
Po
si
tio
n
Vibration suppression control ON
Motor end
Machine end
Po
si
tio
n
When the advanced vibration suppression control (vibration suppression control tuning mode (parameter
No. PB02)) is executed, the vibration frequency at load side can be automatically estimated to suppress
load side vibration.
In addition, the vibration suppression control tuning mode shifts to the manual mode after positioning is
performed the predetermined number of times. The manual mode enables manual setting using the
vibration suppression control vibration frequency setting (parameter No. PB19) and the vibration
suppression control resonance frequency setting (parameter No. PB20).
Summary of Contents for MELSERVO-JN Series
Page 31: ... 22 MEMO ...
Page 49: ...2 6 2 INSTALLATION MEMO ...
Page 181: ...5 30 5 DISPLAY AND OPERATION SECTIONS MEMO ...
Page 199: ...6 18 6 GENERAL GAIN ADJUSTMENT MEMO ...
Page 303: ...11 46 11 OPTIONS AND PERIPHERAL EQUIPMENT MEMO ...
Page 351: ...12 48 12 SERVO MOTOR MEMO ...
Page 445: ...13 94 13 POSITIONING MODE MEMO ...