
6.6 Position Control
6.6.4 Smoothing Settings
6-36
6.6.4
Smoothing Settings
Smoothing allows you to apply a filter to the position reference to produce smoother Servomo-
tor operation. Smoothing is effective in the following cases.
•
When the host controller that outputs the references cannot perform acceleration or deceler-
ation
•
When the reference pulse frequency is very low
Note: Smoothing does not affect the travel distance (i.e., the number of reference pulses).
The following parameters are related to smoothing.
Change the settings while there is no reference pulse input and the Servomotor is stopped.
*
*The filter is disabled if you set the parameter to 0
The difference between the position reference acceleration/deceleration time constant (Pn216)
and the average position reference movement time (Pn217) is shown below.
Pn216
Position Reference Acceleration/Deceleration Time Constant
Setting Range
Setting Unit
Default Setting
When Enabled
Classification
0 to 65,535
0.1 ms
0
*
Immediately after
the motor stops
Setup
Pn217
Average Position Reference Movement Time
Setting Range
Setting Unit
Default Setting
When Enabled
Classification
0 to 10,000
0.1 ms
0
*
Immediately after
the motor stops
Setup
Changes to the settings in Pn216 or Pn217 are not applied while the Servomotor is operat-
ing. The changes will be enabled the next time the Servomotor comes to a stop.
Position Reference Acceleration/Deceleration Filter
Average Position Reference Movement Filter
–
Position
Position
Information
100%
6
3
.2%
3
6.8%
Pn216
Pn216
Time
Before filter
After filter
Reference pul
s
e
frequency
100%
Pn217
Pn217
Time
Before filter
After filter
Reference pul
s
e
frequency
Pn217
Pn217
100%
Reference pul
s
e
frequency
Before filter
After filter
Time