User Documentation

-60-
No.PF※※-OMP0002-H
Fault
Possible cause
Countermeasures
Output
No output.
Incorrect wiring.
Correct the wiring.
Output is unstable.
Foreign matter in the
sensor.
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.
The piping is connected in
the wrong direction.
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.
Pulsation in the flow.
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.
Air leakage.
Correct the piping.
Hysteresis is too small.
Increase the hysteresis.
Button
The buttons do not
operate.
Key lock mode is activated.
Unlock the keys (page 55).
External
input
The external input is
not accepted (no
reaction).

Incorrect wiring.
Correct the wiring.
The input time is too short.
When the external input is applied, the input line must
be connected to GND for a minimum of 30 msec.
Input interval is too short.
To input signals successively, wait for at least 1
second before inputting the next signal.
: Product with external input function.