Chapter 10 Troubleshooting Alpha Compact 32708612
Version: 14.12.2012 page 129 of 135
PROBLEM POSSIBLE CAUSE SOLUTION
Multiple labeling of the
product.
Start- or rather product-
trigger-signal is bouncing
(several impulses follow
the trigger-signal).
Sensor is defect and has to be
exchanged.
In case of PLC-triggering check
the outgoing signal and debounce
if necessary.
The label is not applied
(although the product
passed the start-light barri-
er).
No product detection. Please clean reflector or sensor if
they are polluted.
Check adjustment of product-
sensor (cp. manual of your sen-
sor) or exchange it.
The type of light barrier does not
suit for the product because it`s
transparent or reflective…
The desired rate of appli-
cation cannot be reached
with the labeler.
The required rate of appli-
cation from the conveyor
exceeds the specifications.
Check the system data consider-
ing the used label size. Reduce
product speed if necessary.
Incorrect configuration pa-
rameter values of the la-
beler.
Check setup of the labeler.
Slip at shaft encoder. Check mechanical setup.
[V-LABEL] is set too low
also when using a shaft
encoder.
Check the adjustment of speed-
synchronization.
Labeler applies without
evident reason.
Start-light barrier and/or
product-sensor and/or re-
flector are loose or vibrate.
Check adjustment of the sensor
(cp. manual of your sensor).
Start- /product sensor and
reflector are not adjusted
or misaligned.
Loose cable-connections. Check all connections with the
controller or inquire a Service
Technician at the Service-
Hotline