Indications For Internal Relay Faults (Irfs) And Warnings - ABB REM 610 Operator's Manual
Motor protection relay
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REM 610
3.3.2.3.
32
Motor Protection Relay
Operator's Manual
Indications for internal relay faults (IRFs) and warnings
There are two types of fault indications; internal relay fault (IRF) indications and
warnings. Internal relay faults prevent relay operation while less severe faults
(called warnings) allow continued relay operation with full or reduced functionality.
Internal relay fault (IRF)
At permanent internal relay faults, the relay is no longer protecting and has to be sent
for repair at an authorized service supplier. When the self-supervision system
detects a permanent internal relay fault, the green indicator LED will start to blink
and the text INTERNAL FAULT and a fault code will appear on the display. State
the fault code when sending the relay for service. 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 will stop blinking and the relay will be returned
to the normal service state, but the fault indication message will remain on the
display until manually cleared (or a motor start up begins).
INTERNAL FAULT
FAULT CODE :30
Fig. 3.3.2.3.-1 Permanent IRF
The fault code is of a numerical kind and identifies the fault type. The fault codes
are listed in the table below:
Table 3.3.2.3-1 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 relays PO1,PO2,SO1,SO2
10, 11, 12
Error in the feedback, enable signal or output relays
PO1,PO2,SO1,SO2
20, 21
Auxiliary voltage dip
30
Faulty program memory
50, 59
Faulty work memory
2)
51, 52, 53
, 54, 56
Faulty parameter memory
55
Faulty parameter memory, calibration parameters
75
RTD module faulty
80
RTD module missing
81
RTD module unknown
82
RTD module configuration error
85
Power supply module faulty
86
Power supply module unknown
90
Hardware configuration error
95
Communication module unknown
1MRS 752264-MUM
1)
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