Troubleshooting - SMC Networks EX140-SMJ1 Series Operation Manual

Troubleshooting

•Troubleshooting
Applicable model :EX140-SMJ1
If a SI unit gets an operation failure, look for the problem using the following flow chart.
If any cause of the problem cannot be found, and a new SI unit can operate well after replaced with the old
one, the failure of SI unit is conceivable. As the failure of SI unit may happen due to the operation
environment (network construction etc), consult us about the countermeasure against that case.
If neither cause of the problem nor failure of SI unit can be found, inconsistency between parameter setting
and the network construction at the master station is conceivable. In this case, refer to "Troubleshooting" in a
user's manual (CC-Link system) by Mitsubishi.
Solenoid valve's
malfunction.
Yes
No
Only the LED at
a solenoid valve
is lit up.
PWR.LED at SI
unit goes off.
RD_LED at SI
unit goes off.
L RUN_LED at SI
unit goes off.
SD_LED at SI unit
goes off.
L ERR.LED at
SI unit flashes.
Solenoid valve's
malfunction.
SI unit has no
error.
-12-
L ERR.LED at SI
unit goes off.
Solenoid
valve's failure
See Trouble
No. 1
See Trouble
No. 2
See Trouble
No. 3
See Trouble
No. 4
See Trouble
No. 5
See Trouble
No. 6
See Trouble
No. 7
No.EX※※-OME0011-D