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Fault
No output.
Output
Output is unstable.
The buttons do not
Button
operate.
The external input
External
is not accepted (no
input
∗
reaction).
∗: Product with external input function.
Possible cause
Incorrect wiring.
Loose connector.
Foreign matter in the sensor.
The piping is connected in
the wrong direction.
Pulsation in the flow.
Air leakage.
Hysteresis is too small.
Key lock mode is activated.
Incorrect wiring.
The input time is too short.
Input interval is too short.
-90-
Countermeasures
Correct the wiring.
Connect the connector.
Install a filter or mist separator on the IN side if there
is a risk of foreign matter entering the product.
If there is foreign matter on the mesh, remove it
completely, taking care not to damage the product.
Mount the product so that the flow direction is the
same as the arrow indicated on the side of the body
or the product label.
It is possible that pulsation is generated due to the
fluctuation of the supply pressure or the
characteristics of the compressor or pump used as
the pressure source.
Change to a pressure source with less fluctuation or
install a tank which reduces the pressure fluctuation.
Correct the piping.
Increase the hysteresis.
Unlock the keys. (page 73)
Correct the wiring.
When the external input is applied, the input line must
be connected to GND for a minimum of 30 msec.
To input signals successively, wait for at least 1
second before inputting the next signal.
No.PF※※-OMZ0002
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