151
YLS-K
Description
The alarm
High back reflection
is activated when the detected level of
backscattered laser radiation in the combiner module is too high. The
fault leads to an immediate shutdown of the laser emission. The operat-
ing status
Laser ready
is reset, and the status
Laser error
is activated. If
the fault occurs repeatedly, this may lead to the laser being damaged.
Possible
causes
The back reflection generally occurs on the workpiece when the
process parameters are not configured optimally or during the process-
ing of highly reflective materials.
Soiling or damage to the following elements can also cause high back re-
flection:
•
Quartz-block end-faces of the feeding fiber
•
Quartz-block end faces of the process fiber
•
Protective glass of the process fiber
•
Protective glass of the process optics
Analysis / trou-
bleshooting
ð
Check the relevant process parameters (in particular the focus
position, laser power, process speed and set angle of the process
optics).
ð
Contact the competent IPG service department to determine the
process parameters for processing highly reflective materials.
ð
Check the quartz-block end faces as well as the protective glasses
of the process fiber and the process optics for soiling or damage.
Message
Laser module
Type
Fault
Resetting
-
Description
The alarm
Laser module
indicates that a previously active laser module
has been deactivated due to an internal fault. The alarm leads to the
shutdown of the laser emission. The operating status
Laser ready
is re-
set, and the status
Laser error
is activated.
Possible
causes
•
The module has lost communication with the micro controller.
•
There is an internal module error.
Analysis / trou-
bleshooting
ð
Make certain that the communication cable between the module
and the cross-connection board is connected.
ð
Determine based on the Modules tab which module is deacti-
vated.
Message
Laser module disconnected
Type
Fault
Resetting
-
| Appendix