Indications For Internal Relay Faults (Irfs) And Warnings - ABB REM 610 Operator's Manual

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)