-86-
No.PF
※※
-OMX0002
Error indication
Problem Possible
causes
Investigation method
Countermeasure
•
Over current error
(Er1) is displayed
•
System error
(Er0, 4 to 16, 40)
is displayed
•
"HHH" is
displayed
Excess current
was applied to the
output (Er1)
(1) Check if the output current is 80 mA
or greater.
(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 to 16, 40)
(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 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) Check that the Power supply
voltage is 24 VDC ±10%.
Applied flow rate is
higher than the
upper limit (HHH)
(1) Check if the flow rate exceeds the
upper limit of the set flow rate.
(2) Check if foreign matter has entered
the piping.
(1) Reset applied flow rate to a
level within the settable flow
range.
(2) Take measures to prevent
foreign matter from entering
the piping.
Product failure
Replace the product
The display is
unstable.
Incorrect power
supply
Check if the power supply voltage is in
the range 24 VDC ±10%.
Power supply voltage is 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.
Setting of the response time may
improve the condition.