- 41 -
Opposite side of
the connector
Connector side
4. 2 Return to Origin position
The Card Motor uses an incremental type sensor (linear encoder) to detect the position of the table.
Therefore, it is necessary to return the table to the Origin Position after the power has been switched on.
There are three [Return to Origin Position] methods as described below. In any of the methods, the
Origin position (0) will be set at the connector side.
When the table is moved towards the opposite side of the connector, after the [Return to OriginPosition]
operation has been completed, the position of the table registered in the controller will be added
(incremental positive direction).
Method
Description
Retracted End Position
(Connector Side)
(Recommended)
The table moves towards the connector side until it is stopped by the
retracted mechanical end stop, and the Origin Position (0) is set 0.3 mm
away from the retracted mechanical end stop.
After [Return to Origin Position] is completed, the table stops at the Origin
position (0).
The return to Origin position method is set to [Retracted End Position] in
the initial condition.
Extended End Position
The table moves towards the opposite side of the connector until it is
stopped by the extended mechanical end stop, and the Origin position (0)
is set at stroke A + 0.3 mm away from the retracted mechanical end stop.
After [Return to Origin Position] is completed, the table stops at the
Maximum Stroke position.
Sensor Origin
The table moves until it receives a signal from the sensor Origin position
integrated into the linear encoder, and the Origin Position (0) is set at a
certain distance J from that position towards the connector side.
After [Return to Origin Position] is completed, the table stops at the sensor
Origin position.
This method is used to achieve high repeatability of the Origin position.
This [Return to Origin Position] method applies only to LAT3F-
∗,
which is
the only model equipped with [Origin Position signal] in the sensor.
The figure below shows the stopping positions for each [Return to Origin Position] method.
Model
A
H
J
Note)
LAT3
□
-10 10 10.5
5
LAT3
□
-20 20 20.5
5
LAT3
□
-30 30 30.5
15
Note) This applies only to LAT3F-
∗
.