Application Examples ASDA Series Application Note
3-40 March, 2015
3.3.2.1 Master Axis – Axis of Conveyor
It transports the to-be labeled objects, such as packing box. The pulse signals are sent out to
command the camshaft axis simultaneously in order to control the labeling speed.
3.3.2.2 Camshaft Axis – Label Feeding Axis
Following the command of master axis, the camshaft axis executes labeling according to the
pace of master axis. When delivering the label, the pace should be accurate and stable. It should
be controlled to operate the same speed with the master axis while labeling, otherwise the label
will be pasted uneven.
3.3.2.3 Label Positioning Sensor
The label positioning sensor decides the outstretched length of label while the label is waiting to
be pasted. It can be operated by moving the photoelectric switch (label positioning sensor).
3.3.2.4 Labeling Start Sensor
When DI7 receives the signal from labeling start sensor, it will control E-cam to engage and the
camshaft axis will synchronize with the master axis. When E-cam starts to accelerate and reach
the same speed as master axis, the label will just be pasted on the to-be-labeled object. It will not
disengage until the labeling is completed.
3.3.3 Setting of Servo System
3.3.3.1 Camshaft is Enabled and Starts to Label
When the object on the conveyor is detected by labeling start sensor, the camshaft is enabled.
The label axis follows the master axis until the labeling is completed. Then, the camshaft
disengages and its operation is controlled by label positioning sensor. See Figure 3.3.2 and
3.3.3.
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