Chapter 9 troubleshooting guide, Chapter 9, Troubleshooting guide – KEYENCE LS-3100/3100W Series User Manual
Page 86: Roubleshooting, Uide

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If any conditions occur that could be considered as equipment failure or
malfunction, follow the inspection procedures given below.
CHAPTER 9
T
ROUBLESHOOTING
G
UIDE
Check
item
Problem
Details of inspection
Corrective action
Reference
page
Measure-
ment
value
display
• Measured value is not
displayed.
• Nothing appears on the
display.
• Is the power switch ON?
• Is the AC power cable con-
nected?
• Turn ON the switch.
• Connect the AC power cable.
p. 5
"------" is displayed.
• Are targets in position?
• Is the entire scanning area
completely covered?
• Is the appropriate measuring
segment selected?
• Is the scanning head properly
connected?
• Is there any dust or dirt on
the laser emitting/receiving
window?
• Is the laser emission indicator
LED lamp lit?
• Wasn’t "------" displayed
immediately after turning ON
the power switch?
• Wasn’t "------" displayed
immediately after switching
the measurement modes?
• Wasn’t "------" displayed
immediately after shorting
the laser emission remote
control terminal?
• Isn’t the number of measure-
ments for averaging set to a
large value?
• Is there condensation forming
on the equipment?
• Correctly place the targets
within the effective measure-
ment area.
• Correctly select the appropri-
ate measuring segment.
• Turn the power switch OFF,
then after connecting the
scanning head, turn the
power switch ON
• Remove dust or dirt from the
laser emitting/receiving
window.
• Short LASER REMOTE
terminals.
• Wait approximately 10
seconds after turning ON the
power switch before opera-
tion.
• Wait approximately 3
seconds after changing
measurement modes before
resuming operation.
• Wait approximately 10
seconds after shorting this
terminal.
• In the Average mode, maxi-
mum of approximately 2.6
seconds are required until
the measurement value is
displayed after the target is
positioned in the measure-
ment area.
• Change the location.
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p. 15
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