ABB RELION REX640 Operation Manual page 92

Troubleshooting
Figure 91: More information about the fault
On the WHMI, internal fault information is shown under Self-Supervision Status.
Figure 92: Internal fault information on Web HMI
Table 9: Internal fault indications and codes
Fault
Fault indication code
Internal Fault 2
System error
Internal Fault 2
System error
Table continues on the next page
92
Fast self-
Additional recovery
information attempt
Start up error: No
HW/SW mismatch
Start up or runtime Yes
error: Data bus er-
ror, CPU module
Slow 10min
self-
recovery
Immediate
(# of
attempts) IRF-mode
No Yes
Yes (3) No
1MRS759118 D
Action in permanent fault
state
If relay SW has just been
updated, redo it. If not re-
covered, contact your near-
est ABB representative to
check the next possible
corrective action.
Restart the relay. If recov-
ered by restarting, contin-
ue relay normal operation.
REX640
Operation Manual