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).
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