S-Curve Filter For Position Control - Delta ASDA-A2 Series User Manual

Chapter 6 Control Modes of Operation|ASDA-A2 Series
Pulse Inhibit Input Function (INHIBIT)
This function is activated via digital inputs (Please refer to parameter P2-10 ~ P2-17 and DI INHP in
Table 8.A).When the drive is in position mode, if INHP is activated, the external pulse input command
is not valid and the motor will stop (Please note that only DI8 supports this function).
INHP
ON ON
OFF
Pulse
command

6.2.4 S-curve Filter for Position Control

The S-curve filter is for the position smoothing of motion command. Using S-curve filter can run the
servo motor more smoothly in response to a sudden position command. Since the speed and
acceleration curve are both continuous and the time for the servo motor to accelerate is short, using
S-curve filter not only can improve the performance when servo motor accelerate or decelerate but
also can make motor to operate more smoothly (from mechanical view). When the load is change, the
motor usually run not smoothly when starts to run and stop due to the friction and inertia change. At
this moment, users can increase Accel/Decel S-curve constant (TSL), Accel time constant (TACC)
and Decel time constant (TDEC) to improve the performance. Because the speed and angle
acceleration are continuous when position command is changed to pulse signal input, so it is not
needed to use S-curve filter.
6-9
Revision April, 2010