-63-
No.PS
※※
-OMU0012-A
Problem
No.
Problem
Problem possible
causes
Investigation method
Countermeasures
6
•Over current
error (Er1) is
displayed.
•System error
(Er0, 4, 6, 7, 8,
9) is displayed.
•"HHH" is
displayed.
•"LLL" is
displayed.
• Residual
pressure error
(Er3) is
displayed.
Excess current
was applied to
the output (Er1)
(1) Check if the output current is 80
mA or more.
(2) Check if the connected load
complies with the specification.
Check if the load is short circuited.
(3) Check if the relay without surge
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)(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.
Incorrect internal
data processing
of the product
(Er0, 4, 6, 7, 8
and 9)
(1) Check if there is noise
interference (such as static
electricity).
Check if there is a noise source
nearby.
(2) Check if the power supply voltage
is in 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 and then turn back on
the power supply.
(2) Supply power in the range
12 to 24 VDC ±10%.
Applied pressure
is higher than the
upper limit (HHH)
(1) Check if the pressure exceeds the
upper limit of the set pressure
range.
(2) Check if foreign matter has
entered 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.
Applied pressure
is lower than the
lower limit (LLL)
(1) Check if the pressure exceeds the
lower limit of the set pressure
range.
(2) Check if foreign matter has
entered 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.
Pressure is not
atmospheric
pressure when
zero-clear is
performed (Er3)
Check if the pressure exceeded the
atmospheric pressure within ±7%F.S.
(±3.5% F.S. for compound pressure).
Release the applied
pressure to atmospheric
pressure, and retry the zero
clear operation.
Product failure
Replace the product.
7
The display is
unstable.
Incorrect power
supply
Check if the power supply voltage is
in the range 12 to 24 VDC ±10%.
Supply power in the range
12 to 24 VDC ±10%.
Incorrect wiring
Check the power supply wiring.
Check if the brown and blue wires are
connected to DC(+) and DC(-)
respectively, and if the wiring is secure.
Check and correct the
wiring.
Factory line
pressure is not
stable
Check if the factory line pressure is
changing.
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.
