5 Adjustments
5-68
5.8.7 Torque Reference Filter
As shown in the following diagram, the torque reference filter contains first order lag filter and notch
filters arrayed in series, and each filter operates independently. The notch filters can be enabled and
disabled with the Pn408.
(1) Torque Reference Filter
If you suspect that machine vibration is being caused by the servo drive, try adjusting the
filter time constants with Pn401. This may stop the vibration. The lower the value, the better
the response will be, but there may be a limit that depends on the machine conditions.
-
T
T
o
- Trque Reference Filter Setting Guide
Use the speed loop gain (Pn100 [Hz]) and the torque filter time constant (Pn401 [ms])
to set the torque refer- ence filter.
Adjusted value for stable control: Pn401 [ms]
≤
1000/ (2
π ×
Pn100 [Hz]
×
4) Critical gains:
Pn401 [ms] < 1000/ (2
π ×
Pn100 [Hz]
×
1)
Pn40F
2nd Step 2nd Torque Reference Filter
Frequency
Speed
Position
Torque
Classification
Setting Range
Setting Unit
Factory Setting
When Enabled
100 to 5000
1 Hz
5000*
Immediately
Tuning
Pn410
2nd Step 2nd Torque Reference Filter
Q Value
Speed
Position
Torque
Classification
Setting Range
Setting Unit
Factory Setting
When Enabled
50 to 100
0.01
50
Immediately
Tuning
∗
The filter is disabled if 5000 is set.
Pn401
Torque Reference Filter Time Constant
Speed
Position
Torque
Classification
Setting Range
Setting Unit
Factory Setting
When Enabled
0 to 65535
0.01 ms
100
Immediately
Tuning
Summary of Contents for LECYU Series
Page 30: ...1 Outline 1 9 1 4 3 Three phase 200 V LECYU2 V9 Models ...
Page 65: ...3 Wiring and Connection 3 11 3 Wiring Example with DC Power Supply Input DRIVER ...
Page 92: ...3 Wiring and Connection 3 38 External Dimensions Units mm 1 FN Type by Schaffner EMC Inc ...
Page 93: ...3 Wiring and Connection 3 39 2 FN Type ...
Page 143: ...4 Operation 4 44 ...
