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.
Figure 11: 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 25: Internal fault indications and codes
Fault indication Fault code Additional information
Internal Fault
System error
2 An internal system error has occurred.
Internal Fault
File system error
7 A file system error has occurred.
Internal Fault
Test
8 Internal fault test activated manually by the
user.
Internal Fault
SW watchdog error
10 Watchdog reset has occurred too many
times within an hour.
Internal Fault
SO-relay(s),X100
43 Faulty Signal Output relay(s) in card located
in slot X100.
Internal Fault
SO-relay(s),X110
44 Faulty Signal Output relay(s) in card located
in slot X110.
Table continues on the next page
Basic functions 1MRS758755 C
58 REC615 & RER615
Technical Manual
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