43
4.3.2.3. Self-supervision
There are two types of fault targets; internal relay fault (IRF) targets and warnings.
Internal relay faults prevent relay operation. Warnings are less severe faults and
continued relay operation with full or reduced functionality is allowed.
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 target LED starts to flash. The text
INTERNAL FAULT and a fault code appear on the display.
State the fault code when sending the relay for service.
As long as the green target LED (ready) is flashing, the fault target cannot be
cleared. In case an internal fault disappears, the green target LED stops flashing and
the relay is returned to the normal service state, but the fault target message remains
on the display until manually cleared, or until a motor start up begins.
INTERNAL FAULT
FAULT CODE :30
A040278
Fig. 4.3.2.3.-1 Permanent IRF
The fault code is a number which identifies the fault type. The fault codes are listed
in the table below:
Table 4.3.2.3.-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
Motor Protection Relay
Operator's Manual - ANSI ve rsion
REM 610REM 610
1MRS755538
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