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Problem
Problem
No.
•Over current
error (Er1) is
displayed.
•System error
(Er0, 4, 6, 7, 8,
9) is displayed.
•"HHH" is
6
displayed.
•"LLL" is
displayed.
• Residual
pressure error
(Er3) is
displayed.
The display is
7
unstable.
Problem possible
causes
(1) Check if the output current is 80
mA or more.
(2) Check if the connected load
complies with the specification.
Excess current
Check if the load is short circuited.
was applied to
(3) Check if the relay without surge
the output (Er1)
protection is connected.
(4) Check if the wiring is in the same
route as (or bundled together
with) a high-voltage or power line.
(1) Check if there is noise
interference (such as static
Incorrect internal
electricity).
data processing
Check if there is a noise source
of the product
nearby.
(Er0, 4, 6, 7, 8
(2) Check if the power supply voltage
and 9)
is in the range 12 to 24 VDC
±10%.
(1) Check if the pressure exceeds the
Applied pressure
upper limit of the set pressure
is higher than the
range.
upper limit (HHH)
(2) Check if foreign matter has
entered the piping.
(1) Check if the pressure exceeds the
Applied pressure
lower limit of the set pressure
is lower than the
range.
lower limit (LLL)
(2) Check if foreign matter has
entered the piping.
Pressure is not
Check if the pressure exceeded the
atmospheric
atmospheric pressure within ±7%
pressure when
F.S. (±3.5% F.S. for compound
zero-clear is
pressure).
performed (Er3)
Product failure
Incorrect power
Check if the power supply voltage is
supply
in the range 12 to 24 VDC ±10%.
Check the power supply wiring.
Check if the brown and blue wires are
Incorrect wiring
connected to DC(+) and DC(-)
respectively, and if the wiring is secure.
Factory line
Check if the factory line pressure is
pressure is not
changing.
stable
-57-
Investigation method
Countermeasures
(1)(2) Connect the
appropriate load.
(3) Use a relay with a surge
voltage suppressor or
take measures to prevent
surge.
(4) Separate the wiring from
the high-voltage and/or
power line.
(1) Remove the noise and
the noise source (or take
measures to prevent
noise interference), and
reset the product (or turn
off and then turn back on
the power supply.
(2) Supply power in the range
12 to 24 VDC ±10%.
(1) Reset applied pressure to
a level within the set
pressure range.
(2) Take measures to
prevent foreign matter
from entering the piping.
(1) Reset applied pressure to
a level within the set
pressure range.
(2) Take measures to
prevent foreign matter
from entering the piping.
Release the applied
pressure to atmospheric
pressure, and retry the zero
clear operation.
Replace the product.
Supply power in the range
12 to 24 VDC ±10%.
Check and correct the
wiring.
If the fluctuation is not
acceptable, the number of
digits (display sensitivity)
can be reduced by changing
the display resolution.
Digital filter setting may
improve the condition.
No.PS※※-OMS0007-D
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