TS indicator FS indicator Cause Corrective action
--- No power is supplied by the Unit
power supply.
Check the following items and make
sure that power is correctly supplied
from the Unit power supply.
Checks Related to the Power Sup-
ply
• Make sure that the power supply
cable is wired properly
.
• Make sure that there are no
breaks in the power supply cable.
• Make sure that the power supply
voltage is within the specified
range.
• Make sure that the power supply
has enough capacity.
• Make sure that the power supply
has not failed.
If you cannot resolve the problem af-
ter you check the above items and
cycle the Slave Terminal power sup-
ply, the Unit may have a hardware
failure. In that case, replace the
Safety I/O Unit.
---
• Waiting for initialization to start
• Restarting the Unit
Status is normal. W
ait until process-
ing is completed.
---
1-second inter-
val
The safety connections are not es-
tablished (including when they are
currently being established).
Wait until processing is completed.
---
1-second inter-
val
Safety Process Data Communica-
tions Timeout
Refer to Safety Process Data Com-
munications Timeout
( page
12 - 75).
--- --- NX Message Communications Error Refer to NX Message Communica-
tions Error ( page 12 - 88).
12 Troubleshooting
12 - 13
NX-series Safety Control Unit User's Manual (Z930)
12-2 Checking for Errors with the Indicators
12
12-2-2 Troubleshooting the Main Errors in the Safety I/O Units
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