ABB RELION 611 Series Technical Manual page 52

Section 3
Basic functions
46
Different actions are taken depending on the severity of the fault. The protection relay
tries to eliminate the fault by restarting. After the fault is found to be permanent, the
protection relay stays in the internal fault mode. All other output contacts are released
and locked for the internal fault. The protection relay continues to perform internal
tests during the fault situation.
If an internal fault disappears, the green Ready LED stops flashing and the protection
relay returns to the normal service state. The fault indication message remains on the
display until manually cleared.
The self-supervision signal output operates on the closed-circuit principle. Under
normal conditions, the protection relay is energized and the contact gaps 3-5 in slot
X100 is closed. If the auxiliary power supply fails or an internal fault is detected, the
contact gaps 3-5 are opened.
A070789 V1 EN
Figure 9: Output contact
The internal fault code indicates the type of internal relay fault. When a fault appears,
the code must be recorded so that it can be reported to ABB customer service.
Table 24: Internal fault indications and codes
Fault indication
Internal Fault
System error
Internal Fault
File system error
Internal Fault
Test
Internal Fault
SW watchdog error
Internal Fault
SO-relay(s),X100
Internal Fault
SO-relay(s),X120
Internal Fault
SO-relay(s),X130
Table continues on next page
Fault code Additional information
2 An internal system error has occurred.
7 A file system error has occurred.
8 Internal fault test activated manually by the
user.
10 Watchdog reset has occurred too many
times within an hour.
43 Faulty Signal Output relay(s) in card
located in slot X100.
45 Faulty Signal Output relay(s) in card
located in slot X120.
46 Faulty Signal Output relay(s) in card
located in slot X130.
1MRS757454 D
611 series
Technical Manual