Avery Dennison ALS 380 - Manual (Page 69)

67
4 O
PERATION
4.5 A
UTOMATIC DISPENSING SPEED
(APSF)
ALS
380
[72] A 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 and transmitted to
the control system of the ALS 380. The control system
calculates the permanent position and speed of the
products. The resulting values are used for controlling
label feed, unwinding, and rewinding and are constant-
ly monitored and regulated. Fluctuations in the convey-
or 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
speed sensor must be correctly adjusted. Depending
on the operating conditions, the relationship between
the dispensing speed and the conveyor belt speed
must be finely adjusted (the 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)