6.1 Smooth Operation
6 -3
6.1.2 Smoothing
A filter can be applied in the Servopack to a constant-frequency reference pulse. Use the follow-
ing user constant to set the type of filter to be applied.
Pn207.0 Position Reference Filter
Selection
Factory Setting:
0
Position Control
Either an acceleration/deceleration or average movement filter can be selected.
Pn207.0 Setting
Meaning
0
Acceleration/deceleration filter
1
Average movement filter
The time constant and time for these filters are set in the following user constants.
Time Constant for Acceleration/Deceleration Filter
Pn204
Position Reference
Acceleration/
Deceleration Time
Constant
Unit:
0.01ms
Setting
Range:
0 to 6400
Factory
Setting:
0
Position Control
Averaging Time for Average Movement Filter
Pn208
Position Reference
Movement Averaging
Time
Unit:
0.01ms
Setting
Range:
0 to 6400
Factory
Setting:
0
Position Control
After resetting the constant, turn OFF the power once and turn ON it again.
This function provides smooth motor operating in the following cases:
D
When the host device which outputs references cannot perform acceleration/deceleration
processing.
D
When the reference pulse frequency is too low.
D
When the reference electronic gear ratio is too high (i.e., 10
´
or more).
This function does not affect the travel distance (i.e., the number of pulses).
Reference pulses
Servopack
Servomotor
Reference pulse
frequency
Filter applied
Pn204 or Pn208
Acceleration/Deceleration
Reference pulse
frequency
6
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