1MRS 751802-MUM Protection RelayTechnical Reference Manual, Standard ConfigurationsREX 52157Avt#! Apviypxvurr
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vt4.2.1. Function blocksEach function block in the overview diagram represents the input and outputs usedin a particular standard configuration. It also includes the type of protection functionand the basic information of the time characteristics and other characteristics, e.g.CBFP, available in the function. For further information, please refer to the CD-ROM Technical Descriptions of Functions (1MRS 750889-MCD). See also“Introduction” on page 12 for differences between the REX 521 and the RED 500platform in the function block descriptions of the CD-ROM.3I>BS1BS2GROUPRESETCBFPSTARTTRIPCBFP3I>>>CBFPBS1BS2GROUPDOUBLERESETBSOUTSTARTTRIPCBFPIo>CBFPBS1BS2GROUPRESETSTARTTRIPCBFPIo>>CBFPBS1BS2GROUPRESETSTARTTRIPCBFPIo>>>CBFPBS1BS2GROUPRESETSTARTTRIPCBFPGROUP START3I2f/I1f>3dI/dt>3I2f>BS1BS2GROUPRESETSTARTTRIPCBFPIub>CBFP3∆I>BLOCK (BS)GROUPRESETSTARTTRIPCBFPCU_ALARM3Ith>CBFP3J>CabI<->O CB1OPENOPENENACLOSECLOSEENABINOPENBINCLOSEOOPENOCLOSEAOPENACLOSE3IIL1IL2IL3IoIoDRECIL1IL2IL3IoUoBI1BI2BI3BI4BI5BI6BI7BI8BI9BI10BI11BI12BI13BI14BI15BI16EXT_TRGOPENBINOPENBINCLOSEALARMCB wearTCSSTATEBS ALARMTCS1ALARMMCS 3ITRIGGRESETHAR_HIGHCUM_HIGHPQ 3Inf3I>>CBFPBS1BS2GROUPDOUBLERESETBSOUTSTARTTRIPCBFPI<->O IND1BINOPENBINCLOSEI<->O IND2BINOPENBINCLOSEI<->O POSBINLOCALBINREMOTEProtectionfunction blocksControlfunction blockI<->O IND functionblocks for object indicationRemote/localfunction blockMeasurementConditionmonitoringFBoverview
