Fault indication
Fault
code
Additional
information
Fast self-
recovery
attempt
Slow 10min
self-
recovery
(# of
attempts)
Immediate
IRF-mode
Action in permanent fault
state
ing, replace the relay, most
probably hardware failure
in CPU module.
Internal Fault
System error
2 Start up error: Card
init fault
Yes Yes (3) No Restart the relay. If recov-
ered by restarting, contin-
ue relay normal operation.
If not recovered by restart-
ing, check for example
relay's Information menu
to see which card(s) are
not shown correctly and re-
place it (them).
Internal Fault
File system er-
ror
7 Start up error or
runtime error: file
system error
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
Test
8 Internal fault test
activated manually
by the user.
No No - Just check the "Internal
fault test" -setting param-
eter position, if relay is in
test mode
Internal Fault
SW watchdog
error
10 Start up error:
Watchdog reset
has occurred too
many times within
an hour. Note! This
is different indica-
tion than Warning
code 10: Watchdog
reset
No No Yes Restart the relay. If recov-
ered by restarting, contin-
ue relay normal operation.
If not recover by restarting,
replace the relay.
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.
Table continues on the next page
Basic functions 1MRS759142 F
102 REX640
Technical Manual
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