- 38 -
S
peed [mm/s]
Total travel
distance S
Positioning time Tp
Speed Vc
Acceleration Aa
Time [s]
4. Setting and operation
In order to move the Card Motor to a specific position, it is necessary to set the operation patterns in the
LATC4 controller using a PC with the controller setting software installed, or using the teaching box.
The sequence of the step data set in the controller is programmed and controlled using a PLC connected
to the controller.
Refer to the LATC4 series controller operation manual for details of the step data setting procedure, step
data selection using a PLC and operation instructions.
4. 1 Step data setting method
There are two methods for setting the step data in the Card Motor controller as described below.
Description
Description
Cycle time entry
method
(Recommended)
To operate the table based on position and positioning time, or to opearate it at high
frequency (triangular movement profile).
After the required position and positioning time have been set, the speed,
acceleration and deceleration are calculated automatically by the controller.
Speed entry
method
To operate the table at a constant speed (trapezoidal movement profile).
The table moves to the set position based on the set speed, acceleration and
deceleration.
(1) Cycle time entry method
Setting items: Target position [mm] , Positioning time [s] , Load weight [g]
To obtain the total travel distance S [mm] in absolute
positioning mode, calculate the difference between the
position from where the table travel starts to the target
position. The table will move to the Target Position within the
set Positioning Time Tp [s] according to a triangular
movement profile as shown in the diagram on the right.
In relative positioning mode the travel distance S [mm] is
equal to the Target Position.
The positioning time (Tp) should be set larger than the
minimum positioning time (Tmin) shown below in relation to
the travel distance and to the load weight applied during the
operation. If over shoot or vibration occurs, set the
positioning time longer.
LAT3-
∗
r
elationship between positioning time
and total travel distance
LAT3F-
∗
relationship between positioning time
and total travel distance
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0
5
10
15
20
25
30
Stroke (total travel distance) [mm]
P
o
si
tio
n
in
g
ti
m
e
[s
]
0g
100g
300g
Load mass 500g
400g
200g
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0
5
10
15
20
25
30
Stroke (total travel distance) [mm]
P
o
si
tio
n
in
g
ti
m
e
[s]
0g
100g
300g
400g
200g
Load mass 500g
