SMC Networks EX260-SEN2-X205, Operation Manual

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-39-
No.EX
※※
-OMX1001
Troubleshooting table
Fault No.1
Fault Probable cause Recommended error handling Recommended action
SI unit
MS LED is
OFF
(Green/Red is
OFF)
Defective power
cable wiring for SI
unit operation
Check the condition of the power cable
wiring to the SI unit.
Re-tighten the power cable.
(Replace the cable if it is
broken)
Correct the power cable wiring
layout.
SI unit operating
voltage is not
supplied
Check the condition of the supply voltage to
the SI unit. Supply 24 VDC

10% to the SI
unit.
Fault No.2
Fault Probable cause Recommended error handling Recommended action
SI unit
PWR(V) LED
is OFF
Defective power
cable wiring for the
solenoid valve
Check the condition of the power cable
wiring for the valve.
Re-tighten the power cable.
(Replace the cable if it is
broken)
Correct the power cable wiring
layout.
Load voltage for the
valve is not supplied Check the condition of the supply voltage for
the valve. Supply 24 VDC +10%/-5% to
the valves.
Fault No.3
Fault Probable cause Recommended error handling Recommended action
SI unit
L/A LED is
OFF
EtherNet/IP
TM
communication error
between the SI unit
and the upstream
EtherNet/IP
TM
device.
Check the status of the upstream
EtherNet/IP
TM
device.
Supply power to the upstream
EtherNet/IP
TM
device.
Check the BUS IN side communication
cable connections and check for broken
wires.
Tighten the communication
cable connection.
(Replace the cable if it is
broken)
Check that there are no high voltage cables
or equipment that generates noise around
the communication cable and SI unit. Take measures to keep the
communication cable and SI
unit away from noise sources.
Fault No.4
Fault Probable cause Recommended error handling Recommended action
SI unit
MS LED is
red ON
Failure of SI unit
Replace the SI unit and check that it
operates normally.
Replace the SI unit.
Fault No.5
Fault Probable cause Recommended error handling Recommended action
SI unit
MS LED is
red flashing

Abnormal state of SI
unit
Check that there are no high voltage cables
or equipment that generates noise around
the power supply cable. Take measures to keep the
power supply cable away from
noise sources.

: 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.