434.3.2.3. Self-supervisionThere are two types of fault targets; internal relay fault (IRF) targets and warnings.Internal relay faults prevent relay operation. Warnings are less severe faults andcontinued 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 besent for repair at an authorized service supplier. When the self-supervision systemdetects a permanent internal relay fault, the green target LED starts to flash. The textINTERNAL 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 becleared. In case an internal fault disappears, the green target LED stops flashing andthe relay is returned to the normal service state, but the fault target message remainson the display until manually cleared, or until a motor start up begins."#!#0 !0 !- ')A040278Fig. 4.3.2.3.-1 Permanent IRFThe fault code is a number which identifies the fault type. The fault codes are listedin the table below:Table 4.3.2.3.-1 IRF codesFault code Type of fault4 Error in output relay PO15 Error in output relay PO26 Error in output relay PO37 Error in output relay SO18 Error in output relay SO29 Error in the enable signal for output relays PO1,PO2,SO1,SO210, 11, 12 Error in the feedback, enable signal or output relays PO1,PO2,SO1,SO220, 21 Auxiliary voltage dip30 Faulty program memory50, 59 Faulty work memoryMotor Protection RelayOperator's Manual - ANSI versionREM 610REM 6101MRS755538