Panasonic LP-GS Series Setup & Maintenance Manual page 166

Troubles
Marking position is
deviated from the
expected setting position.
⿎ Marking quality
Troubles
Marking is totally faded/
Marking is partially
faded.
166
Causes
• The setting of the laser head
direction is not consistent with the
actual install direction.
• System offset values are input on
the system settings screen.
Causes
Laser emission port is not clean.
Fumes occurring during lasing hinder
laser beam.
Distance to the work piece is not
appropriate.
For LP-GS series:
The set Z-position does not match the
height of the actual target work piece.
(The LP-GSxxx-L type is excluded.)
Marking surface of work piece is
inclined.
There are variations in properties of the
work pieces.
• Thickness varies.
• Surface roughness varies (including
those in gloss).
• Material varies (including those in
chemical composition).
Work piece feeder is not stable.
Performance of laser oscillator
deteriorates due to aging.
For LP-RV series:
The setting value of the pulse duration is
not appropriate.
ME-LPGS-SM-8
Measures
Check the setting direction of the laser head,
X-axis/ Y-axis offset or rotation offset setting of
the system settings screen.
Measures
• Clean contaminants off the laser emission
port by following the procedures described in
Setup/Maintenance Guide.
• For LP-RF/LP-RV series:
If contaminants persist, replace the protection
glass of the laser emission port.
• Install dust collector.
• Check that dust collector works well.
Adjust distance between bottom surface of laser
marker head and marking surface of the work
piece.
Set the Z-position according to the work piece
height.
Make adjustment so that bottom surface of laser
marker head and marking surface of the work
piece are parallel with each other.
Adjust the marking conditions and work distance
according to respective work pieces.
Adjust work piece feeder so that work piece
position becomes stable.
• Increase setting value of laser power.
• Decrease scan speed.
If it is not possible to get the same marking quality
as before even with the max. value of the laser
power setting, laser oscillator must be replaced.
Contact our sales office.
Adjust the pulse duration according to the material
of the work piece.
For plastic work pieces the pulse duration 4ns or
8ns is a common setting, and for metal, 16ns or
30ns is often selected.