LNS Alpha 538 - Alarm Codes and Descriptions (AL19-AL21)

CHAPTER 9: MALFUNCTIONS 9-8
ALPHA 538/552
AL19: Bar stock insertion malfunction!
Description
The "bar stock insertion malfunction" alarm is
generated whenever the collet or material
diameters are not adapted.
Solutions
Check the collet diameter.
Check the bar stock loading diameter.
AL20: Bar stock not extracted from the collet!
Description
The "Bar stock not extracted from the collet" alarm
is generated if the signal (X25 – SQ16) is not
detected after the bar has been extracted from the
collet of the bar feed. Before the guiding channel
opens to load a new bar, the remnant check
device confirms that the remnant has been
extracted from the collet of the bar feed.
Solutions
Check that the extraction device jaws are not
broken.
Check the adjustment of SQ16, the switch should
only activate when no bar is present in the collet
of the bar feed.
Contact LNS
SA
for further information.
AL21: Bar stock magazine empty!
Description
This alarm is generated when no material is
detected in the guidance zone.
Solution
Check the material presence.