SD710 Series Servo Drive User's Manual Chapter 7 Auxiliary Functions
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7.19 Type A vibration suppression control function (Fn204)
The Type A vibration suppression control function is used to further improve the vibration suppression effect after
adjustment by single parameter tuning.
The A-type vibration suppression control function effectively suppresses the continuous vibration of about 100Hz to
1000Hz that occurs during the process of increasing the control gain.
This function will be set automatically by smart tuning or command input type smart tuning, so there is little need to use
it. Please use it only when further fine tuning is required and when readjustment is necessary due to vibration detection
failure.
CAUTION
● After executing this function, the relevant parameters
will be set automatically. Therefore, the
response performance may change significantly before and after executing this function, so for
safety reasons, execute this function in a state where you can stop it at any time in an emergency.
● Before executing
the A-type vibration suppression control function, set the rotation inertia ratio
correctly by intelligent tuning, etc. Otherwise, normal control may not be possible and vibration may
occur.
● The vibration frequency range that can be detected using the A
-type vibration suppression control
function is 100 Hz to 1000 Hz. Vibration frequencies outside the detection range cannot be
detected, so set the notch filter by turning on single-parameter tuning or use the vibration
suppression function.
● Increasing th
e damping gain of the A-type vibration suppressor can improve the vibration
suppression effect, but a large damping gain alone may increase vibration. While determining the
damping effect, gradually increase the damping gain setting by 10% in the range of 0% to 200%. If
the damping gain reaches 200% and the vibration suppression effect is still not achieved, terminate
the setting and reduce the control gain by one-touch tuning, etc.
(1) Pre-implementation recognition matters
Before performing the A-type vibration suppression control function, be sure to check the following settings, because if
they are not set correctly, "NO-OP" will be displayed in the operation and the function cannot be performed.
● The parameter
prohibition function (Fn010) is not set to "Prohibit writing".
●
Invalidation of the exemption option.
● Non
-torque control.
● The parameter is not set to "
Prohibit writing".
(2) Operation steps
The user can execute this function if vibration is generated by the input action while operating with the keyboard, or if he
wants to make further fine adjustments after using the A-type vibration suppression control function.
The procedure to be followed when the vibration frequency is not known is shown below.
Steps
Panel display
Keys used
Operations
1
Press the "MODE/SET" key to select the auxiliary
function. Adjust by pressing the "UP" and "DOWN" keys
until Fn000 is displayed.
2
Adjust by pressing the "UP" or "DOWN" key until Fn204 is
displayed.
!
MODE/SET
Data/
MODE/SET
Data/