KEYENCE LS-5000 - Manual (Page 124)

Appendices
118
Appendices
Appendix C Troubleshooting Guide
If a condition occurs that could be due to equipment failure or malfunction, follow
the inspection procedures given below.
If the LS-5000 series does not operate normally after this inspection, contact the
nearest KEYENCE dealer or sales office.
Problem Item Inspection Action Ref. page
Measured
value
display p.8, 13 • Measured value is
not displayed.
• Nothing is dis-
played.
• Check power switch.
• Turn power switch ON.
• Check connection with power
supply.
• Connect AC power cable.
(LS-5501)
“- - - - -” is displayed. • Check if target is correctly
placed in measurement area.
• Check if scanning area is
entirely covered.
• Check if AREA is correctly
selected.
• Check if scanning head is
connected.
• Check laser emitting/receiving
windows for dust or dirt.
• Check if laser ON alarm indica-
tor is lit.
• Check if power switch has just
been turned ON.
• Check if the measurement
mode has just been changed.
• Check number of averaging
measurements.
• Check condensation.
• Place target in measurement
area correctly.
• Select AREA correctly.
• Turn power OFF. Connect
scanning head, and turn power
ON.
• Remove dust or dirt from laser
emitting/receiving window.
• Short-circuit LASER REMOTE
terminals.
• Wait for approx. 10 seconds
after turning power ON.
• Wait for approx. 3 seconds
after changing the measure-
ment mode.
• Depending on No. of averaging
measurements, approx. 2.6 or
less seconds is required to
display measured value after
target is placed in measuring
area.
• Change measurement environ-
ment.
p.115
p.39
p.13
p.60
p.4
p.13
p.44
Measured value
fluctuates. • Check if target is correctly
placed in measurement area.
• Check if reference edge is set
in measurement area.
• Check laser emitting/receiving
windows for dust or dirt.
• Check target for dust or dirt.
• Check for large variations in
ambient temperature.
• Place target in measurement
area correctly.
• Set reference edge (when
T.EDGE/B.EDGE mode is
used).
• Remove dust or dirt.
• Keep ambient temperature
constant.
p.115
p.60