ABB REF 610 - Page 133

133
Internal relay fault
When an internal relay fault preventing relay operation is detected, the relay first
tries to eliminate the fault by restarting. Only after the fault is found to be
permanent, the green indicator LED (ready) begins to blink and the self-supervision
output contact is activated. All other output contacts are returned to the initial state
and locked for the internal relay fault. Further, a fault indication message appears on
the LCD, including a fault code.
IRF indications have the highest priority on the HMI. None of the other HMI
indications can override the IRF indication. As long as the green indicator LED
(ready) is blinking, the fault indication cannot be cleared. In case an internal fault
disappears, the green indicator LED (ready) stops blinking and the relay is returned
to the normal service state, but the fault indication message remains on the LCD
until manually cleared.
The IRF code indicates the type of internal relay fault. When a fault appears, the
code is to be recorded and stated when ordering service. The fault codes are listed in
the following table:
Table 5.1.18.-1 IRF codes
Fault code Type of fault
4 Error in output relay PO1
5 Error in output relay PO2
6 Error in output relay PO3
7 Error in output relay SO1
8 Error in output relay SO2
9 Error in the enable signal for output relay PO1, PO2, SO1 or SO2
10, 11, 12 Error in the feedback, enable signal or output relay PO1, PO2, SO1
or SO2
13 Error in optional output relay SO3
14 Error in optional output relay SO4
15 Error in optional output relay SO5
16 Error in the enable signal for optional output relay SO3, SO4 or SO5
17, 18, 19 Error in the feedback, enable signal or optional output relay SO3,
SO4 or SO5
20, 21 Auxiliary voltage dip
30 Faulty program memory
50, 59 Faulty work memory
51, 52, 53
a)
, 54, 56 Faulty parameter memory
b)
55 Faulty parameter memory, calibration parameters
80 Optional I/O module missing
81 Optional I/O module unknown
82 Optional I/O module configuration error
85 Power supply module faulty
86 Power supply module unknown
90 Hardware configuration error
95 Communication module unknown
Feeder Protection Relay
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