SMC Networks ZL6 Series Operation Manual page 49

•
Cross-reference for troubleshooting
Error
Problem
No.
•Output remains
ON.
Indication LED
remains ON.
1
•Output remains
OFF.
Indication LED
remains OFF.
Output remains
ON.
2
Indication LED
works correctly.
Output remains
OFF.
3
Indication LED
works correctly.
The switch output
4 generates
chattering.
Slow switch output
5
response.
Possible cause
(1) Check the set pressure value.
(2) Check the settings of the
Incorrect pressure
hysteresis and output type.
setting
(Normal output/reversed
output(out1) )
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 even though
Unsuitable model
NPN should have been selected, or
selection
the 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
Incorrect wiring are connected to DC(+) and DC(-)
respectively, and if the output wiring
is loose (contact failure).
(1) Check the pressure settings.
(2) Check if the hysteresis range is
too narrow.
Incorrect setting (3) Check the setting of the response
time.
Check if the response time is too
short.
Product failure
Check the pressure settings.
Incorrect pressure Check if the detected pressure and
setting the set pressure values are the same
or are too close.
-48-
Investigation method Countermeasure
(1) Reset the pressure
settings.
(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.
(adjust the tensile force and
increase the bending radius).
Replace the product.
Correct the wiring.
(1) Reset the pressure
settings.
(2) Increase the hysteresis.
(3) Change the response
time setting.
Replace the product.
Adjust the set pressure
value.
Ensure the set pressure
value is not too close to the
detected pressure value.
NO.ZL3-OM00701-A