155
Moving objects
Troubles
Causes
Measures
Marking cannot be done.
Encoder signal is off.
Check for proper connection to encoder.
Marking is sometimes
skipped.
(E800 occurs.)
Marking trigger signal is entered
before current marking is
finished.
• Increase scan speed setting of laser marker.
• Decrease delay distance setting of laser marker.
• Reduce feeder speed.
• Increase marking interval (interval between objects on
feeder).
Characters unreadable
Feed direction is not correct.
Match feed direction with laser marker operation.
Speed changes at conveyor
junction.
If conveyors are coupled, avoid marking near conveyor
junction.
Actual speed and preset speed
for feeding objects are different
due to slippage of objects.
Remove cause of object slippage.
Pulse setting of encoder is not
correct.
Measure the number of encoder pulses and adjust
“Number of encoder pulses”.
Encoder is out of order.
Check encoder for proper function.
Marking position is
unstable.
Positional misalignment is likely
to occur due to meandering
motion of conveyor.
Secure objects to prevent misalignment.
Marking character pitch
is unstable.
The line speed at the marking
position is different from the
speed at the installation site of
the encoder.
Place the encoder as close as possible to the marking
position.
Decrease the encoder resolution to block the effect of
the line speed fluctuation.
Note that the minimum value of the encoder pulse should
be 10 P/mm.
Character is partially
chipped.
Obstacle hinders laser beam.
Remove obstacle between head of laser marker and
object.
For LP-M series:
The marking target object
movement timing is not
synchronized with the
displacement sensor trigger
output timing.
Confirm the displacement sensor detection position and
the displacement sensor trigger timing.
Confirm the displacement sensor specifications and
match the signal output timing to the marking trigger
signal timing.
For LP-M series:
Output signal of the
displacement sensor is not
stable.
Confirm the installation status and check if the
displacement sensor is receiving the impact of vibration
or the like.
Confirm the output signal of the displacement sensor to
check if it is being affected by noise.
ME-LPS-SSM-8
Summary of Contents for LP-S Series
Page 15: ...15 MEMO ME LPS SSM 8 ...
Page 26: ...26 Chapter 1 Specification ME LPS SSM 8 ...
Page 41: ...41 Chapter 2 Preparation ME LPS SSM 8 ...
Page 78: ...Chapter 3 Connection for External Control ME LPS SSM 8 ...
Page 126: ...Chapter 4 Maintenance ME LPS SSM 8 ...
Page 148: ...Troubleshooting ME LPS SSM 8 ...
Page 169: ...Index ME LPS SSM 8 ...
Page 172: ...172 MEMO No 9000 0066 16V ME LPS SSM 8 ...
Page 173: ...No 9000 0066 16V ...
