Mitsubishi Electric QD77MS User Manual page 73

[Pr.325] Synchronous encoder axis smoothing time constant
Set the averaging time to execute a smoothing process for the input travel value from
synchronous encoder.
The smoothing process can moderate speed fluctuation of the synchronous encoder input.
The input response is delayed depending on the time corresponding to the setting by
smoothing process setting.
Input value speed
before smoothing
Input value speed
after smoothing
Pr.325 Synchronous encoder axis
[Pr.326] Synchronous encoder axis phase compensation advance time
Set the time to advance or delay the phase (input response) of the synchronous encoder
axis.
Refer to Section 4.8 "Phase compensation function" for the peculiar time delay of the
system using the synchronous encoder axis.
1 to 2147483647 [μs] ............... Advance the phase (input response) according to the
0 [μs] ........................................ Do not execute phase compensation.
-2147483648 to -1 [μs] ............ Delay the phase (input response) according to the setting
If the setting time is too long, the system experiences overshoot or undershoot at
acceleration/deceleration of the input speed. In this case, set a longer time to affect the
phase compensation amount in "[Pr.327] Synchronous encoder axis phase compensation
time constant".
Averaging by
smoothing time constant
smoothing time constant
setting time.
time.
2 - 25
Chapter 2 Input Axis Module
t
t
Pr.325 Synchronous encoder axis
smoothing time constant