
4.SERVO FUNCTION DETAILS B-65270EN/05
- 142 -
Use the torque command filter first when the mechanical system
resonates at high frequency. If the resonance cannot be eliminated, use
the observer.
(5) Setting parameters
1895 (FS15i)
Torque command filter (FILTER)
2067 (FS30i, 16i)
[Setting value] 1166 (200 Hz) to 2327 (90 Hz)
When changing the torque command filter setting, see Table 4.5.1.
As the cut-off frequency, select the parameter value corresponding to
a half of the vibration frequency from the table below.
(Example)
In the case of 200-Hz vibration, select a cutoff frequency of 100
Hz for the torque command filter, and set FILTER = 2185.
CAUTION
Do not specify 2400 or a greater value. Such a high
value may increase the vibration.
Table 4.5.1 Parameter setting value of torque command filter
Cutoff frequency (Hz)
Parameter
Cutoff frequency (Hz)
Parameter
60
65
70
75
80
85
90
95
100
110
120
130
No. 2810
No. 2723
No. 2638
No. 2557
No. 2478
No. 2401
No. 2327
No. 2255
No. 2185
No. 2052
No. 1927
No. 1810
140
150
160
170
180
190
200
220
240
260
280
300
No. 1700
No. 1596
No. 1499
No. 1408
No. 1322
No. 1241
No. 1166
No. 1028
No. 907
No. 800
No. 705
No. 622
(6) Cutting feed/rapid traverse switchable torque command filter
With this function, the torque command filter coefficient can be
switched between rapid traverse and cutting feed to improve figure
precision during cutting and increase a maximum feedrate and
maximum acceleration during rapid traverse at the same time.
1779 (FS15i)
TCMD filter coefficient for rapid traverse
2156 (FS30i, 16i)
[Valid data range] 1166 (200 Hz) to 2327 (90 Hz)
When 0 is set, the cutting feed/rapid traverse switchable torque
command filter is disabled. The normal filter coefficient (No. 1895 for
Series 15i or No. 2067 for Series 30i, 16i, and so on) is used at all
times.
When a value other than 0 is set, No. 1779 (Series 15i) or No. 2156
(Series 30i, 16i, and so on) is used for stop time, rapid traverse, and
jog feed, and No. 1895 (Series 15i) or No. 2067 (Series 30i, 16i, and
so on) is used for cutting only.