Precautions For Auto Acceleration/Deceleration Of Joint #3 - Epson LS-B Series Manual

4.4 Precautions for Auto Acceleration/Deceleration of Joint #3

When you move the Manipulator in horizontal PTP motion with Joint #3 (Z) at a high
position, the motion time will be faster.
When Joint #3 gets below a certain point, then auto acceleration/deceleration is used to
reduce acceleration/deceleration. (Refer to the figures below) The higher the position of
the shaft is, the faster the motion acceleration/deceleration is. However, it takes more time
to move Joint #3 up and down. Adjust the position of Joint #3 for the Manipulator motion
after considering the relation between the current position and the destination position.
The upper limit of Joint #3 during horizontal motion using Jump command can be set by the
LimZ command.
Automatic acceleration/deceleration vs. Joint #3 position
(%)
NOTE
When moving the Manipulator horizontally while the shaft is being lowered, it may cause

over-shoot at the time of final positioning.
Shaft height (mm)
LS-B series Rev.5
120
100
100
100
80
60
40
20
0 − 100 − 200
Acceleration/Deceleration
LS20-B804*
0
−150
−400
−420
LS20-B Manipulator 4. Setting of End Effectors
18
18
14
14
− 300 − 400
LS20-BA04*
100
100
100
100
14
18
14
18
* Figures on the graph (%)
are the proportion to the
acceleration/deceleration
speed at the shaft upper
limit position.
LS20-BA04*
LS20-B804*
(mm) Shaft height
167