81
5.2 T
ANDEM
O
PERATION
ALS
20X
256
[84]
Two labellers 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)
5.2.1
Overview
In tandem operation, two labellers are arranged one
behind the other. Only one of the labellers is in opera-
tion at a time. The other remains in standby.
If the active labeller reports the end of the label roll or a
malfunction occurs, it shuts down. The other labeller
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 re-
load with new label material or to eliminate minor mal-
functions.
The first machine in the production line is designated as
the master device, the second is designated as the
slave device. Normally, the master device is activated
first.
Flipflop master mode
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 continues.
– Flipflop master mode: The master machine starts la-
belling. If an error occurs at the master, the slave
overtakes and continues labelling, until an error oc-
curs at the slave. Then it switches back to the mas-
ter machine, at which the error should be removed
now.
A
B
5.2
TANDEM OPERATION
Summary of Contents for ALS 204
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