Omron NX-SL3300 User Manual page 448

12 Troubleshooting
Cause and [Communications Coupler Unit]
correction
An error occurred in the commu-
nications coupler unit, which pre-
vents the NX bus communica-
tions from being carried out nor-
mally.
The NX Unit is not mounted
properly.
The power cable for the Unit
power supply is disconnected.
Or, the wiring from the Unit pow-
er supply to the NX Units is in-
correct.
The power cable for the Unit
power supply is broken.
The unit power voltage is out of
the supported range, or the unit
power capacity is not sufficient.
There is a hardware error in the
NX Unit.
Attached in- None
formation
Precautions/ None
Remarks
12 - 36
Check the error in the communi-
cations coupler unit and try the
solutions specified in Correction.
Mount the NX Units and End
Cover securely and secure them
with End Plates.
Correctly wire the Unit power
supply to the NX Units.
If the power cable connecting the
Unit power supply and the NX
Units is broken, replace the pow-
er cable.
Configure the power supply sys-
tem correctly in accordance with
the power supply specifications.
If the error occurs again even af-
ter you make the above correc-
tion, replace the NX Unit.
NX-series Safety Control Unit User's Manual (Z930)
Try the solutions specified in Pre-
vention for the error in the com-
munications coupler unit.
Mount the NX Units and End
Cover securely and secure them
with End Plates.
Correctly wire the Unit power
supply to the NX Units.
None
Configure the power supply sys-
tem correctly in accordance with
the power supply specifications.
None