7-23
7-5 Manual Tuning
7
Adjustment Functions
Damping Control
When the machine end vibrates, damping control removes the vibration frequency component from
the command and suppresses vibration.
Current
command
Position/
Speed control
Position
Command
M
E
Servo Drive
Feedback pulses
Load
Damping
filter
Motor
Ball screw
Movement
Position change sensor monitors vibration
Vibrating end
Machine stand
Driver
Position controller
Sets end vibration frequency
Torque
com-
mand
Precautions
for Correct Use
The following conditions must be met to use damping control.
Stop operation before changing parameters.
Under the following conditions, damping control may not operate properly or may have no
effect.
Conditions under which damping control operates
Control Mode
The Position Control Mode must be used.
If the Control Mode Selection (Pn02) is set to 0, realtime autotuning and
notch filter 1 must be disabled in High-Response Position Control.
If the Control Mode Selection (Pn02) is set to 2, Advanced Position
Control Mode is used.
Conditions under which the effect of damping control is inhibited
Load
When forces other than commands, such as external forces, cause
vibration.
When the difference between the resonance frequency and
anti-resonance frequency is large.
When the vibration frequency is large (more than 100 Hz).
