ABB RELION REX640 - Page 94

Fault indication
Fault
code
Additional
information
Fast self-
recovery
attempt
Slow 10min
self-
recovery
(# of
attempts)
Immediate
IRF-mode
Action in permanent fault
state
code 10: Watchdog
reset
Internal Fault
LHMI module
79 Start up error: EE-
PROM error in LHMI
module. The fault
indication may not
be seen on the
LHMI during the
fault.
No No Yes Restart the relay. If recov-
ered by restarting, contin-
ue relay normal operation.
If not recover by restarting,
check LHMI connection ca-
ble and connection to be
proberly fixed. If then not
recovered by restarting, ex-
change the LHMI module.
Internal Fault
LHMI module
79 Runtime error:
LHMI LCD error.
The fault indication
may not be seen
on the LHMI during
the fault.
Yes Yes (3) No Restart the relay. If recov-
ered by restarting, contin-
ue relay normal operation.
If not recover by restarting,
check LHMI connection ca-
ble and connection to be
proberly fixed. If then not
recovered by restarting, ex-
change the LHMI module.
Internal Fault
RAM error
80 Runtime error: Er-
ror in the RAM
memory on the
CPU module.
No Yes (3) No Restart the relay. If recov-
ered by restarting, contin-
ue relay normal operation.
If not recover by restart-
ing, replace the relay, most
probably hardware failure
in CPU module.
Internal Fault
ROM error
81 Runtime error: Er-
ror in the ROM
memory on the
CPU module.
Yes No Yes Restart the relay. If recov-
ered by restarting, contin-
ue relay normal operation.
If not recover by restart-
ing, replace the relay, most
probably hardware failure
in CPU module.
Internal Fault
EEPROM error
82 Start up error: Er-
ror in the EEPROM
memory on the
CPU module.
No No Yes Restart the relay. If recov-
ered by restarting, contin-
ue relay normal operation.
If not recover by restart-
ing, replace the relay, most
probably hardware failure
in CPU module.
Internal Fault
EEPROM error
82 Start up error: CRC
check failure in the
EEPROM memory
on boot-up on the
CPU module.
Yes Yes (3) No Restart the relay. If recov-
ered by restarting, contin-
ue relay normal operation.
If not recover by restart-
ing, replace the relay, most
probably hardware failure
in CPU module.
Internal Fault
FPGA error
83 Runtime error: Er-
ror in the FPGA on
the CPU module.
Yes Yes (3) No Restart the relay. If recov-
ered by restarting, contin-
ue relay normal operation.
If not recover by restart-
ing, replace the relay, most
probably hardware failure
in CPU module.
Internal Fault
RTC error
84 Start up error: Er-
ror in the RTC on
the CPU module.
Yes No Yes Restart the relay. If recov-
ered by restarting, contin-
ue relay normal operation.
If not recover by restart-
ing, replace the relay, most
probably hardware failure
in CPU module.
Table continues on the next page
Troubleshooting 1MRS759118 D
94 REX640
Operation Manual