Yaskawa Sigma-5 User Manual: Design and Maintenance - Rotary Motors - Analog Voltage and Pulse Train Reference - Manual (Page 260)

6.7 Vibration Suppression Function (Fn205)
6-57
6
Adjustm
e
nts
(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.
Refer to 6.9.2 Torque Feedforward and 6.9.3 Speed Feedforward for details.
6
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
7
Press the Key to save the setting. "DONE" will
flash for approximately two seconds and "RUN" will
be displayed again.
8
Press the Key to complete the vibration suppres-
sion function. The screen in step 1 will appear again.
(cont’d)
Step Display after Operation Keys Operation
㧾㨁㧺     ̆㨂㨕㨎 㧿㨡㨜̆

㧹㨑㨍㨟㨡㨞㨑 㨒㧩㧜㧝㧜㧚㧠㧴㨦
㧿㨑㨠㨠㨕㨚㨓 㨒㧩㧜㧝㧞㧚㧠㧴㨦
Position
Error
Torque
reference
Rota-
tion
㧾㨁㧺  ޓޓ ̆㨂㨕㨎 㧿㨡㨜̆

㧹㨑㨍㨟㨡㨞㨑㨒 㧩㧙㧙㧙㧙㧙㧴㨦
㧿㨑㨠㨠㨕㨚㨓㨒 㧩㧜㧝㧞㧚㧠㧴㨦
㧾㨁㧺    ̆㧲㨁㧺㧯㨀㧵㧻㧺̆
㧲㨚㧞㧜㧠
㧲㨚㧞㧜㧡
㧲㨚㧞㧜㧢
㧲㨚㧞㧜㧣
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.
Parameter Function When Enabled Classification
Pn140
n.0
[Factory setting] Model following control is not used together with the
speed/torque feedforward input.
Immediately Tuning
n.1
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.