5-42
5-21 Torque Command Filter Time Constant
Ope
rati
n
g Func
tions
5
5-21 Torque Command Filter Time Constant
Function
Set the primary filter applied to the torque command. The 1st and 2nd filter is switched by gain
switching.
The torque command filter can suppress machine vibration that occurs when a servo loop is
configured.
Adjusting the time constant of the torque command filter may be able to suppress vibration.
Responsiveness worsens by increasing the time constant. Overshoots may occur as the servo
rigidity decreases. Depending on the machine, optimize the setting for this filter as well as the notch
filter explained in the next section.
Parameters Requiring Settings
Parameter
No.
Parameter name
Explanation
Reference page
Pn014
Torque Command
Filter Time
Constant
Sets the time constant for the torque command filter.
(Setting range: 0 to 25 ms, units: 0.01 ms)
5-68
Pn01C
Torque Command
Filter Time
Constant 2
Sets the 2nd time constant for the torque command filter.
(Setting range: 0 to 25 ms, units: 0.01 ms)
5-68
Filter time
constant
Filter cut-off
frequency
Characteristics of
load resonance
frequency
Frequency
−
3 db
Loop gain
[db]
0 db
Attenuate resonance
to reduce loop gain
to 0 db or lower