80
4OPERATION
4.5 AUTOMATIC DISPENSING SPEED (APSF)
ALS
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450
4.5.1 Principle of operation
[86] A RPM transmitter (speed sensor) on the conveyor line
The automatic dispensing speed (APSF) makes it pos-
sible to automatically adapt the dispensing speed to the
speed of the conveyor belt. The speed of the conveyor
belt is picked up by a speed sensor [86A] and transmit-
ted to the control system of the labeller. The control
system calculates the permanent position and speed of
the products. The resulting values are used for control-
ling label feed, unwinding, and rewinding and are con-
stantly monitored and regulated. Fluctuations in the
conveyor belt speed are automatically compensated
for. If the conveyor belt stops, the label dispenser also
stops.
The conveyor belt can stop even while a label is being
dispensed. The label feed is then stopped as well. Only
when the belt starts running again, does the label feed
move the label to the next gap on the label ribbon.
Conveyor belt and label dispenser are operating in per-
fect synchronisation. As a prerequisite for this, the RPM
transmitter must be correctly adjusted. Depending on
the operating conditions, the relationship between the
dispensing speed and the conveyor belt speed must be
finely adjusted (EGRA function).
Only servicing technicians are permitted to con-
figure the label dispenser for APSF mode. For
further information, refer to the service guide.
A
4.5 AUTOMATIC DISPENSING SPEED (APSF)
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