No. SX-DSV02472 -
35-
• Pr2.23 Positional command FIR filter
When a square wave command of target speed Vc is applied, set up the Vc arrival time as shown in the figure below.
*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 the setting of Pr2.23 (Positional command FIR filter), stop the command pulse and wait until the filter
switching wait time has elapsed. The filter switching wait time will be setup value
×
0.1 ms + 0.25 ms when the setup
time is below 10 ms, or setup value
×
0.1 ms
×
1.05 when the setup time is over 10 ms. If Pr 2.23 is changed during
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. Change will be reflected after the control power reset.
*3 Even if setting of Pr2.23 (Positional command FIR filter) is changed, it is not immediately applied to the internal
calculation. If the switching as described in *2 occurs during this delay time, the change of Pr2.23 will be suspended.
When the positional command is trapezoidal wave, its waveform will be shaped to S at the output of the filter.
Speed
[r/min]
Vc
Positional command smoothing
filter setup time [ms]
(Pr 2.23
×
0.1 ms)*1
Time
Positional command
before filter
Positional command
before filter
Speed
[r/min]
Vc
Positional command smoothing
filter setup time [ms]
(Pr 2.23
×
0.1 ms)*1
Time
Positional
command before
filter
Positional
command after
filter
Filter switching
waiting time *2
R1.05
Motor Business Division, Appliances Company, Panasonic Corporation