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Operators Manual
ALS 330/430
Release 4/06 Page 46 Configuration menu
With this function, you can decide how to react:
NONE Do nothing. The unlabeled product will be detected later in the line.
WARN Set the warning output and displays W__0. The production continued.
ERR1 Set the error output to stop the production line immediately and display E_10.
ERR2 The first unlabeled product generates the warning. Two unlabeled products in a
sequence set the error.
ERR3 The error condition will be set at 3 unlabeled products.
Automatic product speed follower
_________________________APSF
Under parameter APSF the automatic product speed follower function can be activated (ON /
OFF). The APSF sensor is fitted to the conveyor and supplies signals that represent the speed
of the conveyor. The installation of the sensor and the adjustment of the parameter have been
carried out according to your application and should not be changed.
The compensation steps for the current conveyor speed are constantly recalculated rather than
just when the product-sensor is triggered. This means that a change in conveyor speed
between the time that the product is detected and the time it reached the dispense position has
no effect on labelling placement accuracy.
There is no optimum EGRA setting. The compensation steps are calculated using the current
EGRA setting rather than using fixed compensation step values for a predetermined EGRA
setting and so any EGRA value works just as well.
At slow speeds the label dispense speed matches the conveyor speed exactly regardless of the
EGRA setting. For instance if the dispenser needs to make 1.236 steps per encoder pulse then
at the first four encoder pulses the dispenser will make one step but will then have fallen
4x0.236=0.944 steps behind. On the fifth encoder pulse the dispenser will make two steps and
so be (5x0.236)-1=0.18 steps behind. The dispenser will always be less than one step behind.
The dispenser thus always dispenses the correct amount of label in regard to the product
movement even when the conveyor is starting from rest or coming to rest.
Type of applicator ________________________________________________APPL
In most cases, the label is dispensed directly onto the product. If this is not possible, an
applicator has to be used. We offer a number of different applicators. In this function, the
installed applicator has to be defined. You may select the applicator type you have ordered for
your application (display shows 'ASA`,`EP`, RVEP or another applicator). In case of direct
dispensing the function direct dispense has to be chosen:
Display shows 'DIR'.
The adjustment is done in the factory and should not be changed.
RVEP (ReVerse EP) operates as an EP applicator except that once the label has been
dispensed onto the applicator the applicator cylinder is extended to wait for the next product to
arrive. This provides more accurate labelling than with EP applicators because variation in the
time it takes for the cylinder to extend does not affect the labelling position.