SMC Networks EX260-SEN2-X205 Operation Manual page 40

Troubleshooting table
Fault No.1
Fault Probable cause
Defective power
SI unit
cable wiring for SI
MS LED is
unit operation
OFF
(Green/Red is
SI unit operating
OFF)
voltage is not
supplied
Fault No.2
Fault Probable cause
Defective power
cable wiring for the
SI unit
solenoid valve
PWR(V) LED
is OFF
Load voltage for the
valve is not supplied
Fault No.3
Fault Probable cause
EtherNet/IP
communication error
SI unit
between the SI unit
L/A LED is
and the upstream
OFF
EtherNet/IP
device.
Fault No.4
Fault Probable cause
SI unit
MS LED is Failure of SI unit
red ON
Fault No.5
Fault Probable cause
SI unit
Abnormal state of SI
MS LED is
unit

red flashing
: In the case of "Device Revision 2.1" manufactured in May 2016 or earlier, MS LED will be a flashing RED when the solenoid valve
power is OFF or the supply voltage level is insufficient.
Recommended error handling
Check the condition of the power cable
wiring to the SI unit.
Check the condition of the supply voltage to
the SI unit.
Recommended error handling
Check the condition of the power cable
wiring for the valve.
Check the condition of the supply voltage for
the valve.
Recommended error handling
Check the status of the upstream
TM
EtherNet/IP device.
TM
Check the BUS IN side communication
cable connections and check for broken
wires.
TM
Check that there are no high voltage cables
or equipment that generates noise around
the communication cable and SI unit.
Recommended error handling
Replace the SI unit and check that it
operates normally.
Recommended error handling
Check that there are no high voltage cables
or equipment that generates noise around
the power supply cable.
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Recommended action
Re-tighten the power cable.
(Replace the cable if it is
broken)
Correct the power cable wiring
layout.
Supply 24 VDC 10% to the SI
unit.
Recommended action
Re-tighten the power cable.
(Replace the cable if it is
broken)
Correct the power cable wiring
layout.
Supply 24 VDC +10%/-5% to
the valves.
Recommended action
Supply power to the upstream
TM
EtherNet/IP device.
Tighten the communication
cable connection.
(Replace the cable if it is
broken)
Take measures to keep the
communication cable and SI
unit away from noise sources.
Recommended action
Replace the SI unit.
Recommended action
Take measures to keep the
power supply cable away from
noise sources.
No.EX※※-OMX1001