YASKAWA SGDV User Manual page 202

Step Display after Operation
6
7
8
No settings related to the vibration suppression function will be changed during opera-
tion.
If the servomotor does not stop approximately 10 seconds after the setting changes, a
timeout error will result and the previous setting will be automatically enabled again.
The vibration suppression function will be enabled in step 6. The motor response, how-
ever, will change when the servomotor comes to a stop with no reference input.
(3) Related Function on Vibration Suppression Function
This section describes functions related to vibration suppression function.
Feedforward
The feedforward gain (Pn109), speed feedforward (V-REF) input, and torque feedforward (T-REF) input will
be disabled in the factory setting.
Set Pn140.3 to 1 if model following control is used together with the speed feedforward (V-REF) input and
torque feedforward (T-REF) input from the host controller.
Parameter
n.0
[Factory setting]
Pn140
n.1
Keys
Function
Model following control is not used together with the
speed/torque feedforward input.
Model following control is used together with the
speed/torque feedforward input.
• Model following control is used to make optimum feedforward settings in the SERVO-
PACK when model following control is used with the feedforward function. Therefore,
model following control is not normally used together with either the speed feedfor-
ward (V-REF) input or torque feedforward (T-REF) input from the host controller. How-
ever, model following control can be used with the speed feedforward (V-REF) input
or torque feedforward (T-REF) input if required. An improper feedforward input may
result in overshooting.
6.7 Vibration Suppression Function (Fn205)
Operation
Press the Key. The "Setting f" will change to
usual display and the frequency currently displayed
will be set for the vibration suppression function
Example of measured waveform
Press the Key to save the setting. "DONE" will
flash for approximately two seconds and "RUN" will
be displayed again.
Press the Key to complete the vibration suppres-
sion function. The screen in step 2 will appear again.
When Enabled
Immediately
(cont'd)
.
Position
Error
Torque
reference
Classification
Tuning
6
6-51