Marking Quality - Panasonic LP-M Series Serial Communication Manual

„ Marking quality
Troubles
Marking fades entirely/
partially.
The marking density
of the filling lines in the
drawings or characters is
uneven.
170
Causes
Laser emission port is not clean.
Fumes occurring during marking hinder
laser beam.
Distance to object is not appropriate.
For LP-M series:
The displacement sensor input does
not match the distance to the actual
marking surface.
Target surface of object is inclined.
For LP-M / LP-Z series:
Setting of Uniform Spot Mode is not
appropriate.
There are variations in properties of
objects.
Object thickness
• Distance to object
• Object surface condition (including
roughness, gloss level, etc.)
• Object material (including chemical
composition ratio)
Object feeder is not stable.
Performance of laser oscillator
deteriorates due to aging.
For LP-M / LP-Z series:
The drawing speed of the filling lines is
too fast and the Z-axis control module
cannot follow up the height change.
ME-LPMSZ-SR-9
Measures
Refer to the "Safety / Setup / Maintenance Guide"
"Maintenance" and clean contaminants off the
laser emission port.
If contaminants persist, replace lens and/or laser
emission port protection cover (glass). Contact
our sales office.
Install dust collector.
Check that dust collector works well.
Adjust distance between bottom surface of laser
maker and target surface of object.
Confirm the displacement sensor and laser
marker input specifications and adjust the
displacement sensor output (analog current value)
to a suitable value.
Input the displacement sensor trigger when the
displacement sensor measurement value is
steady.
Match the displacement sensor measurement
position to the marking position.
Make adjustment so that bottom surface of laser
marker head and target surface of object are
parallel with each other.
Set the Uniform Spot mode within the required
range. If the setting of Uniform Spot mode is
changed, adjust the laser power as the density of
marking may change.
Adjust marking conditions according to variations
found.
Adjust object feeder so that position of objects
become stable.
• Increase laser power setting.
• Decrease scan speed.
If initial marking quality cannot be reached even
if laser power is set to the upper limit, laser
oscillator must be replaced. Contact our sales
office.
• Decrease the scan speed.
• Change the marking order or the line filling
directions.