BZNSPDIF_ABLOCKBLKSTTRZONERSTTRIPRSTOCTENSENSTRIPTRIPLXTREXTBAYTREXTZTRSENSOCTSOCTFOCTALDIFFALIINIIN_ZAIINRANGEID_ZAIDRANGEIDFRMSIEC06000160-2-en.vsdIEC06000160 V2 ENFigure 51: BZNSPDIF function block (Differential Zone A, 1ph). Alsoapplicable for Differential Zone B, 1ph5.1.4.5 Input and output signalsTable 55:BZNTPDIF_A Input signalsName Type Default DescriptionBLOCK BOOLEAN 0 Block zone tripBLKST BOOLEAN 0 Block differential protection startTRZONE BOOLEAN 0 External zone tripRSTTRIP BOOLEAN 0 Reset latched zone tripRSTOCT BOOLEAN 0 Reset open CT alarmENSENS BOOLEAN 0 Enable Sensitive Differential ProtectionTable 56:BZNTPDIF_A Output signalsName Type DescriptionTRIP BOOLEAN Zone A general tripTRIPL1 BOOLEAN Differential trip phase L1 Zone ATRIPL2 BOOLEAN Differential trip phase L2 Zone ATRIPL3 BOOLEAN Differential trip phase L3 Zone ATREXTBAY BOOLEAN Zone A trip due to external trip from one ofconnected baysTREXTZ BOOLEAN Zone A trip due to external input signalTRSENSL1 BOOLEAN Sensitive differential function trip phase L1 Zone ATRSENSL2 BOOLEAN Sensitive differential function trip phase L2 Zone ATRSENSL3 BOOLEAN Sensitive differential function trip phase L3 Zone AOCT BOOLEAN General open CT alarm Zone ASOCTL1 BOOLEAN Open CT alarm from slow algorithm in phase L1Zone ATable continues on next pageSection 5 1MRK 505 208-UEN BDifferential protection108Technical reference manual
