5-39
5-18 Torque Feed-forward
Ope
rati
n
g Func
tions
5
5-18 Torque Feed-forward
Function
In speed commanded control, using the torque feed-forward command reduces the delay caused
by the speed loop integration time and thereby makes acceleration and deceleration faster. For a
vertical axis, torque feed-forward can compensate heavy loads to eliminate the difference (up and
down) in the torque command amount by the speed command calculation.
Parameters Requiring Settings
There are no parameters to set. This is set by command from the network.
To control during acceleration and deceleration, differential operations will be required for the speed
command via the host controller.
Speed Feedback
Torque Feed-forward
Current Feedback
Notch Filter
Torque
Command
Filter
Torque
Command
TFF[%]
Torque
Limit
Torque Limit
PCL/NCL
Speed
Command
Unit
Conversion
MECHATRO
LINK-II
Soft Start
Acceleration/
Deceleration
Pn058:
Acceleration
Pn059:
Deceleration
Speed
PI
Processor
Torque
PI
Processor
Target Speed
[r/min]