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○Troubleshooting list
Problem
Problem
No.
•Output remains
ON.
Indicator LED
remains ON.
1
•Output remains
OFF.
Indicator LED
remains OFF.
Output remains
ON.
2
Indicator LED
works correctly.
Output remains
OFF.
3
Indicator LED
works correctly.
Switch output
4
generates
chattering.
Problem possible
causes
(1) Check the set pressure.
(2) Check the operation mode,
Incorrect
hysteresis and output type.
pressure setting
(hysteresis mode/window
comparator mode,
normal/reversed output)
Product failure
Check the wiring of the output.
Incorrect wiring
Check if the load is connected
directly to DC(+) or DC(-).
Product failure
Check the wiring of the output.
Incorrect wiring
Check if the load is connected
directly to DC(+) or DC(-).
Check if PNP is used when NPN
Unsuitable model
should have been selected, or the
selection
other way around.
Check if there is bending stress
applied to any parts of the lead wire.
Broken lead wire
(bending radius and tensile force
applied)
Product failure
Check the wiring.
Check if the brown and blue wires are
Incorrect wiring
connected to DC(+) and DC(-)
respectively, and if the output wiring
is loose (contact failure).
(1) Check the set pressure.
(2) Check that the hysteresis range is
not too narrow.
Incorrect settings
(3) Check the delay time setting.
Check if the delay time is too
short.
Product failure
-76-
Investigation method
Countermeasures
(1) Reset the pressure
setting.
(2) Reset the function
settings.
Replace the product.
Correct the wiring.
Replace the product.
Correct the wiring.
Review the selected model
(output type).
Correct the wiring
conditions. (adjust the
tensile force and increase
the bending radius.)
Replace the product.
Correct the wiring.
(1) Reset the pressure
setting.
(2) Increase the hysteresis.
(3) Reset the function
settings.
Replace the product.
No.PS※※-OMU0006-F
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