SMC Networks EX260 Series Operation Manual page 30

Troubleshooting table
Fault No.1
Fault Probable cause
Defective
SI unit
DeviceNet
PWR LED and
MS LED is
OFF
DeviceNet
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
SI unit
SI unit fault
MS LED is red
Fault No.4
Fault Probable cause
EEPROM error
SI unit
MS LED is
red flashing
Invalid switch setting
Fault No.5
Fault Probable cause
SI unit
MS LED is DeviceNet
green and NS malfunction
LED is OFF
Recommended error handling
Check the DeviceNet
TM
cable
TM
power
Check the DeviceNet
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
SI unit is damaged.
Recommended error handling
EEPROM writing error.
Check if the switch setting for MAC ID or
communication speed switch has been
changed while the unit power is ON.
Recommended error handling
TM
master Check the condition of the DeviceNet
master.
TM
cable connection.
TM
power.
TM
-29-
Recommended action
TM
Re-tighten the DeviceNet
cable.
(Replace the cable if it is
broken)
TM
Correct the DeviceNet
power wiring layout.
Supply 11 to 25 VDC to the
TM
DeviceNet power.
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 valve.
Recommended action
Replace the SI unit.
Recommended action
Send the reset service to
reset the SI unit.
(Sending data: Service code
5, class ID 1, instance 1,
value 1)
Change the address
communication speed switch
with the unit power off.
Recommended action
Refer to the Operation
TM
Manual of the DeviceNet
master.
No.EX##-OMN0013-D