SMC Networks PF3W504, Operation Manual

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-36-
No.PF
※※
-OMW0004-A
Fault Detail Possible cause Item to check Recommended action
Improper
operation
of the
external
input.
(Integrated
display
type)
No reaction
to the
external
Input.
Incorrect wiring
Check if the brown wire DC(+), blue
wire DC(-), black wire(OUT1) and white
wire(OUT2) are connected correctly.
Correct the wiring.
The input duration
is too short.
Confirm whether the input line is
connected to GND for a minimum of 30
msec.
When the external input is
applied, the input line must
be connected to GND for a
minimum of 30 msec.
Incorrect
display
(Remote
sensor)
The indicator
does not turn
ON.
Incorrect wiring
Check if the brown wire DC(+) and blue
wire DC(-) are connected correctly.
Correct the wiring.
Flow
indicator
LED is
unstable.
Foreign matter
has entered or got
stuck inside the
flow passage of
the sensor.
(1) Confirm whether foreign matter may
enter.
(2) Confirm whether any foreign matter
has got stuck inside.
We recommend a filter with
filtration of approx. 40
mesh.
Remove foreign matter.
Piping is
connected in the
wrong direction. Confirm whether the mounting direction
of the product corresponds to the flow
direction. Make the mounting
direction correspond to the
flow direction.
Insufficient water
supply
Confirm whether the fluid path is full. Fill up the fluid path.
Pulsation in the
flow.
Confirm whether the supply pressure
fluctuates, or whether pulsation is
generated due to the characteristics of
the compressor or pump used as the
pressure source.
Change to a pump that has
less pulsation. Install a tank
to reduce the pressure
fluctuation. Change the
piping to elastic piping such
as rubber hose.
Noise
Confirm that there is no power line or
high voltage line that can be a noise
source in the wiring route. Do not route wires and
cables together with power
or high voltage cables.
Incorrect
temp.
sensor
displays.
(Integrated
display
type)
The temp. is
not
displayed.
Setting condition
of the sub screen
Check the content of the sub screen.
Set the sub screen to the
temp. display.
Please refer to the
Operation Manual on the
SMC website for the
integrated display type
PF3W7.
Connector loose Check that the connector is connected. Connect the connector.
Incorrect
display
Insufficient water
supply
Confirm whether the fluid path is full. Fill up the fluid path.
Foreign matter
Check if foreign matter is stuck to the
sensor.
Remove foreign matter.