4-28
Note
Related page
• A parameter is designated as follows:
Pr0.00 Parameter No.
Class
• For parameters which No. have a suffix of “
*
”
, changed contents will be validated when
you turn on the control power.
• P.3-32... “Inputs and outputs on connector X4”
Default: [ ]
Pr2.23
Command FIR filter
Range
Unit
Default
Related
control mode
0 to 10000
0.1 ms
10
P
F
Related page
[Position control mode / Full-closed control mode]
• Set up the time constant of FIR filter in response to the command.
[Speed control mode]
• With previous control (Pr6.47 bit0 = 0)
This setting is ignored.
• In the two-degree-of-freedom control mode (Pr6.47 bit0 = 1)
Time constant of the command response filter
The maximum value is limited by 640 (= 64.0 ms).
*
For Two-degree-of-freedom control mode, refer to Pr6.47 (P.4-78).
• When a square wave command for the target speed Vc is applied, set up the time constant
of the 1st delay filter as shown in the figure below.
Speed
[r/min]
Vc
Positional command
smoothing filter setup
time [ms]
(Pr2.23 × 0.1 ms)
*
1
Time
Filter switching
waiting time
*
2
Positional command before filter
Positional command after filter
*
1 The actual average travel time (setup value × 0.1 ms) has the maximum absolute error of 0.2 ms for a
time constant below 10 ms and the maximum relative error of 1.6 % for a time constant 10 ms or more.
*
2 When changing Pr2.23 Command FIR filter, stop the command pulse and wait until the filter switching
wait time has elapsed. The filter switching wait time is the setup value × 0.1 ms + 0.25 ms when the
setup time is 10 ms, and setup value × 0.1 ms × 1.05 when the setup time is 10 ms or more. If Pr2.23 is
changed while the command pulse is being input, the change is not reflected until the command pulse-
less state has continued for the filter switching wait time.
*
3 Even if Pr2.23 Command FIR filter is changed, it is not applied immediately. If the switching as described
in *2 occurs during this delay time, the change of Pr2.23 will be suspended.
1. Details of parameter
[Class 2] Damping control
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