6 Adjustment
114 SD780 Series Servo Technical Manual
“NO-OP” will be displayed in the operation and this function cannot be performed.
Invalid selection of no motor test function (Pn730 = 0)
Robust control selection is invalid (Pn175 = 0)
Tuning mode is set to 0 or 1 when tuning is performed by speed control
The bandwidth setting procedure can be performed by any one of the SERVO Keyboard or PC
debugging software. However, the keyboard can only operate when the tuning mode is set to “0-
stability” or “1-high response”. For detailed operation procedure, see “7.13 Bandwidth Setting
(Fn303)”. When positioning-specific adjustments “2-positioning” and “3-positioning without
overshoot” are required, it shall be used with “PC debugging software”.
6.5.3 Supplement
(1)
Vibration suppression function
Before setting the bandwidth, confirm whether the related vibration suppression function is
automatically setting. The factory default is automatically setting. Please set the corresponding
function switch to “No adjust automatically” before you don’t want to change its value through the
bandwidth setting.
Function
code
Parameter
Range
Default
Unit
Communication
address
When
enabled
Pn140
IF suppression
control options
0x00
～
0x11
0x0010
－
0x0140
Immediately
The IF(intermediate frequency) suppression control function effectively suppresses
the continuous vibration of about 100 to 1000 Hz that occurs when the control gain is
increased.
0x1#: Automatically set IF vibration suppression frequency through intelligent setting
and bandwidth setting.
0x0#: Not set automatically through intelligent setting and bandwidth setting, only
manual setting.
0x#1: IF suppression frequency setting valid.
0x#0: IF suppression frequency setting invalid.
Pn150
Notch filter 1
automatic
adjustment
selection
0x00
～
0x01
1
－
0x0150
Immediately
0- Automatic adjustment without auxiliary functions.
1- Automatic adjustment through auxiliary functions.
Cautions
！
Please set the bandwidth after the inertia recognition or the intelligent setting of the rotation inertia ratio
(Pn100) correctly.
