Analogue output
is not provided.
(specified
accuracy is not
satisfied.)
Check that the analogue output is
connected to a load.
Non-compliance
with the load
spec.
(1) Check that the correct load is
connected.
(2) Check that the impedance of the
input equipment (A/D
transformer) is suitable.
Insufficient
warm-up time
Check if the product satisfies the
specified accuracy after 10 minutes
warm up time.
After energizing, the display
and output can drift. For
detecting fine pressures,
warm up the product for 10
to 15 minutes.
An over current
error (Er1, Er2)
is displayed.
System error
(Er0, Er4, Er6,
Er7, Er8 or Er9)
is displayed.
The display
shows "HHH".
The display
shows "LLL".
Residual
pressure error
(Er3) is
displayed.
Over current to
the output
(Er1 and 2)
(1) Check that the switch output load
current is not more than 80 mA.
(2) Check that the connected load
satisfies the specifications, and
check the load for short circuits.
(3) Check that any relay is connected
with a surge voltage suppressor.
(4) Check if the wiring is not in the
same route as (or bundled
together with) a high voltage
cable or power cable.
(1),(2) Connect the load as
specified.
(3) Use a relay with a surge
voltage suppressor or
take measures to
prevent noise.
(4) Separate the wiring
route from any high
voltage cable or power
cable.
Incorrect
operation of the
internal data of
the Pressure
switch
(Er0, Er4, Er6,
Er7, Er8, Er9)
(1) Check that there is no noise
interference such as static
electricity, and check for noise
sources.
(2) Check that the power supply
voltage is within the range 12 to
24 VDC ±10%.
(1) Remove the noise and
the noise source (or take
measures to prevent
noise interference), and
reset the product or turn
off the power supply.
Then, supply the power
again.
(2) Supply a correct voltage
of 12 to 24 VDC ±10%.
Applied pressure
is above the
upper limit (HHH).
(1) Check that the pressure is not
above the upper limit of the set
pressure range.
(2) Check that foreign matter has not
entered the piping.
(1) Adjust the pressure to
within the set pressure
range.
(2) Take measures to
prevent foreign matter
from entering the piping.
Applied pressure
is below the lower
limit (LLL).
(1) Check that the pressure is not
below the lower limit of the set
pressure range.
(2) Check that foreign matter has not
entered the piping.
(1) Adjust the pressure to
within the set pressure
range.
(2) Take measures to
prevent foreign matter
from entering the piping.
Pressure is not
atmospheric
pressure at
zero-clear
operation (Er3)
Check that during the zero clear
operation, pressure above ±7% F.S.
(±3.5%F.S. for compound pressure)
was not applied.
Return the applied pressure
to atmospheric pressure,
and retry the zero clear
operation.