SMC Networks PFCA7 Series Operation Manual page 68

Problem
Incorrect wiring
Analogue/switch
output does not output
Entry of foreign matter
Analogue/switch
output is unstable
Incorrect NPN or PNP
specification
Lead wire is broken
The product failed
Incorrect wiring
Analogue input not
accepted
Contact resistance
(for analogue voltage
Analogue input is
input type)
incorrect
Lead wire is broken
Wire is broken inside
the product
Key-lock mode is
activated
Buttons do not work
Button failure
Model selection
The units cannot be (model selected does
selected not have units
selection function)
The mode does not
IO-Link enable/disable
shift to IO-Link mode
setting is set to
while using IO-Link
Disable
communication
The mode shifts to
IO-Link mode when Erroneous detection
not using IO-Link due to noise
communication
Possible cause
Check the output wiring.
Check if the analogue output is
connected to the white wire, the
switch output (in SIO mode) is
connected to the black wire, and
that the wire is not loose.
Check for foreign matter entry or
sticking to the piping port.
Check the output switch setting for
the switch output NPN or PNP.
Check the output wiring.
Check if the analogue input is
connected to the grey wire or that
the wiring is not loose.
Check to see if there is any
defective contact.
Check if the key-lock function is
turned on.
Check that the product No. printed
on the product is equipped with
units selection function.
Check the IO-Link enable/disable
setting.
Check the possible application of
noise or if there is a noise source.
Investigation method
-68-
Countermeasures
Check and correct the wiring.
Use a filter to prevent foreign
matter from entering or sticking.
Discharge the condensate of
the filter periodically.
Select the switch output
according to the operating
conditions.
Replace the lead wire.
Replace the product.
Check and correct the wiring.
Connect the wire without
defective contact.
Replace the lead wire.
Replace the product.
Deactivate key-lock mode.
)
(Page 51
Replace the product.
Units selection function is not
available for models which are
fixed to SI units.
: The units selection function is not
for use in Japan due to a new
measurement law.
: Fixed SI unit: L/min
Set the IO-Link enable/disable
setting to Enable.
Remove the noise and noise
source.
Set the IO-Link enable/disable
setting to Disable.
No.PF※※-OMA1002