KEYENCE LS-7600 - Manual (Page 207)

10-3
Chapter 10 Troubleshooting
10
Problem Inspection Remedy
Check that the LED light source of
the transmitter is lit. Check the connection of the cable
between the transmitter and receiver.
(See page 1-18)
If the LED light source is still OFF, the
LED light source needs a replacement.
Contact your KEYENCE representative.
Check that the measuring head is
connected correctly. Connect the cable correctly.
(See page 1-18)
The
measured
value is not
displayed.
Check the averaging number is set
correctly. Set the averaging number correctly.
(See page 5-31)
Check that the target is within the
measuring area. Locate the target correctly in the
measuring area. (See page 9-4, 9-5)
Check that the reference edge is
located within the measuring area. Set the reference edge within the
measuring area if the LS-7600 Series
is in T-EDGE or B-EDGE mode.
(See page 5-10)
Check that the cover glass of the transmitter
or receiver is free of dust and dirt. Remove the dirt and dust from the
cover glass. (See page 3)
Check that the cover glass of the
transmitter or receiver is free from
damage, such as scratches or
cracks. The cover glass needs a replacement if
it is damaged. Contact your KEYENCE
representative.
The
measured
value
displayed
fluctuates.
Check that the target is free of dust,
dirt, burrs, water drops, and oil drops. Remove the dust, dirt, burrs, water
drops, and oil drops from the target.
Use the abnormal value elimination
function (See page 5-22) or area
check function (See page 5-17).
Check that there are no water sprays
or oil sprays in the operating
environment. Blow off the sprays with air.
Use the abnormal value elimination
function (See page 5-22) or area
check function (See page 5-17).
Check that there is no mutual
interference. • Use the mutual interference
prevention function. (See page 6-12)
• Change the mounting position of the
measuring head.
Check that there is no intensive external light disturbance. Block the external light disturbance.
Check that there is no flow of air. Use a cover to prevent the flow of air or
agitate the air with a fan to shorten the
cycle of the flow so that the influence
of the flow on the displayed measured
value will be suppressed.
Check that the LED light source is
bright enough. Use the LED inspection function and check
the strength of light. (See page 6-9)