Self-Supervision - ABB REJ 513 User Manual

ABB Substation Automation
Products and Systems
2.1.1.7
1MRS750613-MUM
User's Guide

Self-supervision

The relay is provided with an extensive self-supervision system that continuously
supervises the software and the electronics of the relay. It handles run-time fault
situations and informs the user about an existing fault.
When a fault is detected, the relay first tries to eliminate it by restarting. Only after
the fault is found to be permanent, the green READY indicator starts to blink and the
protection relay delivers a fault signal to the self-supervision output contact. The self-
supervision output contact that is normally picked up drops off and a fault code can be
read from the relay. All other output contacts are blocked during an internal fault.
The fault code is a number that identifies the fault type. The code shall be recorded,
and stated when service is ordered. Fault codes are listed in the following table.
Table 2.1.1.7-1 Fault codes
Fault code
4
5
6
7
30
50, 59
51, 52, 53, 54, 56
55
56
131, 139, 195,
203, 222, 223
253
Type of fault
No response on output contact test, PO1
No response on output contact test, PO2
No response on output contact test, SO1
No response on output contact test, SO2
Faulty program memory
Faulty work memory
Faulty parameter memory
Faulty parameter memory
Parameter memory (EEPROM) key faulty, formatting by
writing V167:2
Internal reference voltage error
Error in measuring unit
1)
REJ 513
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