KEYENCE LS-7600 - Manual (Page 208)

10-4
Chapter 10 Troubleshooting
10 Check that the LS-7600 Series is
wired correctly. Check the output circuit and wiring.
Connect the cables correctly.
Check that the logic is correctly set.
Check that the retrieval timing is
correct.
The LS-7600 Series has negative logic output.
Use the strobe output and retrieve the
input in correct timing. (See page 7-6)
Check that the right BCD SELECT
signal is input. Input the signal correctly.
(See page 7-9)
Check that the I/O mode is correctly
set. Select the BCD mode. (See page 5-
59)
BCD output
does not
turn ON.
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 target is within the
measuring area. Locate the target correctly in the
measuring area. (See page 9-4, 9-5)
Check that the target is not leaned or
shifted. Locate the target correctly in the
measuring area. (See page 9-4, 9-5)
Check that the transmitter and
receiver are mounted correctly. Mount the transmitter and receiver
correctly. (See page 1-11)
Check that the measured value is
correctly calibrated. Make the right calibration setting.
(See page 5-22)
Check that the operating environment
has no radical temperature change. Maintain a constant operating ambient
temperature. (See page 9-2)
Check that the LED light source is
intensive enough. Use the LED inspection function and check
the strength of light. (See page 6-9)
Check that the P-SELECT setting is
correct. Make the right P-SELECT setting according
to the change method. (See page 6-5)
Check that the key lock is not ON. Set the key lock to OFF.
(See page 4-11)
Check that the key lock is not ON. Set the key lock to OFF.
(See page 4-11)
Check that the LS-7600 Series is
wired correctly. Check the output circuit and wiring.
Connect the cables correctly.
Check that the tolerance setting is
correct. Make the right tolerance setting.
(See page 5-49)
Check that the I/O mode for OUT2 is
correctly set. Select the SUB mode. (See page 5-59)
Check that the LS-7600 Series is
wired correctly. Check the output circuit and wiring.
Connect the cables correctly.
The voltage is set to +10.5 V or
–10.5 V. Set the analog scale correctly
according to the measured value.
The
measured
value
displayed
drifts.
The
program
number
cannot be
changed.
Key input is
not possible.
Comparator
output does
not turn ON.
Analog
output does
not turn ON.
Problem Inspection Remedy