-58-
No.EX##-OMI0032-C
Trouble No.2
Trouble
Possible cause
Investigation method of cause
Solution
Incorrect branch
cable connection
Confirm there is no breakage, incorrect
connection and looseness at connecting
part of the branch cable.
Fix connection of the branch
cable.
Confirm there is no equipment and high
voltage line which might generate a
noise around the branch cable.
Take a proper measure such as
by separating the branch cable
from the noise source.
COM LED of
unit goes off
Branch cable failure
Check the length of the branch cable
and use of dedicated cable.
Fix connection.
Trouble No.3
Trouble
Possible cause
Investigation method of cause
Solution
Incorrect connection
between unit and
solenoid valve
Confirm there is no looseness of the
connector between unit and solenoid
valve.
Fix the connection between unit
and solenoid valve.
Incorrect wiring
between unit and
solenoid valve
Confirm there is no breakage and failure
of wiring between unit and solenoid
valve.
Fix the wiring between unit and
solenoid valve.
System setting error
Confirm the GW unit is set correctly.
Fix the setting.
Incorrect solenoid
valve power supply
voltage
Confirm the power supply voltage from
the unit is within power supply voltage
specified for the sensor. Also, confirm
the length of a branch cable and current
for the unit are within their
specifications.
Operate within the
specifications.
Solenoid valve failure
Replace with new one and check the
operation again.
Read the troubleshooting of
solenoid valve.
Solenoid
valve falls in
failure
Unit failure
Replace with a new one and check the
operation again.
Replace unit.
Trouble No.4
Trouble
Possible cause
Investigation method of cause
Solution
RUN LED
goes off or
BF LED lights
up
(DIA LED
flashes)
Incorrect address
setting
Confirm the address isn’t set to 126 or
127.
Set the address between 0 and
125.
Trouble No.5
Trouble
Possible cause
Investigation method of cause
Solution
Incorrect input and
GW unit controlling
part power supply
connection
Confirm there is no incorrect connection
between input and GW unit controlling
part power supply and GW unit power
supply connector.
Fix the connection.
RUN LED or
BF LED goes
off
(DIA LED
goes off)
Input and GW unit
controlling part power
supply failure
Confirm the condition of input and GW
unit controlling part power supply.
Supply 24 VDC ±10% for input
and GW controlling part power
supply of the GW unit.
