-27-
No.PS※※-OMG0002-F
Reference
No.
Problem Possible cause Investigation method Countermeasure
Incorrect wiring
Check if the analogue output line is
connected with a load.
Correct the wiring.
Non-compliance
with the load
spec.
(1) Check if the proper load is
connected.
(2) Check if input impedance of
input equipment (A/D
transformer) is proper.
Connect a proper load.
Insufficient
warm-up
Check if the product satisfies the
specified accuracy in 20 minutes
after supplying power.
After energizing, indication
and output can drift. For
detecting fine pressure, warm
up the product for 20 to 30
minutes.
6
Analogue output
is not provided.
(Specified
accuracy is not
satisfied.)
Product failure Replace the product.
Over current to
the output
(Er1 and 2)
(1)Check if a current of 80 mA or
more is flowing to the output.
(2)Check if the connected load
satisfies the specifications, and if
the load is shorted.
(3)Check if a relay without a surge
voltage suppressor is connected.
(4)Check if the wiring is in the same
route as (or bundled together
with) a high-voltage line or the
power line.
(1)，(2)Connect the load as
specified.
(3)Use a relay with a surge
voltage suppressor or take
a measure to prevent
noise.
(4)Separate the wiring from
the high-voltage line and/or
power line.
Improper
transaction of
the internal data
of the Pressure
switch
(Er4, 6, 7, and 8)
(1)Check if there is noise
interference such as static
electricity. Check if there is a
noise source
(2)Check if the power supply
voltage is in the range of 12 to
24 VDC.
(1)Remove the noise and the
noise source (or take
measures to prevent noise
interference), and turn off
the power supply. Then,
supply the power again.
(2)Supply power voltage of 12
to 24 VDC.
Applied pressure
is over the upper
limit (HHH).
(1)Check if the pressure gets over
the upper limit of the set
pressure range.
(2)Check if foreign matter got into
the piping.
(3)The connector for sensor may
not be connected correctly.
(1)Bring the pressure back
within the set pressure
range.
(2)Take measures to prevent
foreign matter from getting
into the piping.
(3)Check the wires and contact
of the connector for sensor.
Applied pressure
is under the
lower limit (LLL).
(1)Check if the pressure gets below
the lower limit of the set pressure
range.
(2)Check if foreign matter got into
the piping.
(3)The connector for sensor may
not be connected correctly.
(1)Bring the pressure back
within the set pressure
range.
(2)Take measures to prevent
foreign matter from getting
into the piping.
(3)Check the wires and contact
of the connector for sensor.
Pressure is not
atmospheric
pressure at
zero-clear
operation (Er3)
Check if the pressure over ±7%F.S.
of the atmospheric pressure is
applied.
Return the applied pressure
to atmospheric pressure, and
retry the zero clear operation.
7
An over current
error (Er1 and
2) is indicated.
System error
(Er4, 6, 7, and
8) is indicated.
The display
shows "HHH".
The display
shows "LLL".
Zero-clear error
(Er3) is
indicated.
Product failure Replace the product.
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