Analog Speed Command Filter; Low-Pass Filter For Commands - Delta ASDA-A3 Series User Manual

ASDA-A3

Analog Speed command filter

The Analog Speed Command filter helps to stabilize the motor operation when the analog input
signal (speed) changes rapidly.
The Analog Speed Command filter smoothes the analog input signal. Its time program is the
same as the S-curve filter at normal speed. Also, the speed and acceleration curves are both
continuous. The above graph shows the curve of the Speed command and the motor torque
when you apply the Analog Speed Command filter. In the diagram above, the slopes of the
Speed command in acceleration / deceleration are different. You can adjust the time setting
(P1.034, P1.035, and P1.036) according to the actual application to improve the performance.

Low-pass filter for commands

You usually use the low-pass filter to remove unwanted high-frequency response or noise so that
the speed change is smoother.
Relevant parameters: refer to Chapter 8 for more information.
Parameter
P1.006
Revision December, 2017
(1) Analog Speed command (2) Motor torque
Speed command smoothing constant (Low-pass filter)
Target speed
SFLT
Function
Operation Mode
6
6-17