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No.EX##-OMI0001-E
Trouble No.10
Trouble
Possible cause
Investigation method of cause
Solution
Check that the setting of the switches of
the GW unit has not been changed
while the system was being operated
normally.
Review the setting of switches.
Setting error
Abnormal status of
GW unit
Check that the FG terminal is grounded.
Ground the FG terminal to
improve the noise resistance of
the fieldbus system.
L ERR LED of
GW unit
flashes
Abnormal status of
GW unit
Check that the power supply line is not
in the same route as the power line
and/or high voltage line.
Separate the power supply line
from the power line and the high
voltage line.
Trouble No.11
Trouble
Possible cause
Investigation method of cause
Solution
Incorrect wiring of the
branch cable
Check that the cable of the branch
cable is not broken or mis-connected,
and that the connection is not loosened.
Review the connection of the
branch cable.
(Replace the cable if it is
broken.)
Incomplete
connection of the
Input unit
Check that the Input unit is connected
after the input port.
Check that the Input unit is
connected after the input port.
Incorrect wiring of the
power supply for input
and control for GW
Check that the wiring of the power
supply of input and GW unit control to
the power supply connector of the GW
unit is correctly made.
Review the wiring of the power
supply cable of GW unit.
Power supply failure
of the power for input
and control for GW
Check the power supply state of the
control for input and GW.
Supply 24VDC±10% to the
power supply to control for GW
and input of GW.
COM LED of
GW unit goes
off
Fuse of the Input unit
blown
Check that the fuse of the Input unit is
not blown.
Replace the fuse.