Service Manual
ALS/XLS 20x/256/272
02/2019 | 01
111
Operation
TANDEM OPERATION
[96] Two labelers in tandem arrangement:
A
Master (in the illustration: currently active, but with a label roll that is running low)
B
Slave (in the illustration: in standby, with a full label roll)
Overview
In tandem operation, two labelers are arranged one behind the other. Only one of the labelers is in
operation at a time. The other remains in standby.
If the active labeler reports the end of the label roll or a malfunction occurs, it shuts down. The other
labeler takes over the task of labelling. During automatic switch-over from one machine to the other,
the distance between the two machines and their arrangement are taken into consideration. As a
rule, unlabelled products can be prevented.
At the idle machine, the operator has the option to reload with new label material or to eliminate
minor malfunctions.
The first machine in the production line is designated as the master device, the second is designat-
ed as the slave device. Normally, the master device is activated first.
Master operating modes
The master machine can be set to master mode or to flipflop master mode.
– Master mode: The master machine starts labelling. If an error occurs at the master, the slave
overtakes. As soon as the error at the master is removed, the slave stops and the master con-
tinues.
– Flipflop master mode: The master machine starts labelling. If an error occurs at the master, the
slave overtakes and continues labelling, until an error or a materialend warning occurs at the
slave. Then it switches back to the master machine, at which the error should be solved now.
A
B
Summary of Contents for ALS/XLS 204
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