3.4.2 FunctionalityThe protection relay includes a global conditioning function LEDPTRC that is used tocontrol the virtual Start and Trip indication LEDs.LED indication control should never be used for tripping purposes.There is a separate trip logic function TRPPTRC available in the relayconfiguration.LED indication control is preconfigured in a such way that all the protection functiongeneral start and operate signals are combined with this function (available as outputsignals OUT_START and OUT_OPERATE). These signals are internally connected toDevice Status on WHMI Dashboard and the Device Status widget on the LHMI if thewidget has been instantiated in the LHMI engineering phase. LEDPTRC collects andcombines phase information from different protection functions (available as outputsignals OUT_ST_A /_B /_C and OUT_OPR_A /_B /_C). There is alsocombined earth fault information collected from all the earth-fault functions availablein the relay configuration (available as output signals OUT_ST_NEUT andOUT_OPR_NEUT).3.5 Virtual programmable LED control3.5.1 IdentificationFunction description IEC 61850identificationIEC 60617identificationANSI/IEEEidentificationVirtual programmable LED control LED LED LED3.5.2 Function block...GUID-468D4029-65AF-499D-93BC-4CAEA36322D9 V1 ENFigure 27: Function blockSection 3 1MRS759142 CBasic functions106 REX640Technical Manual
