If, in this case, line voltage supervision is added, then rather than setting 989 to openstate, specify the state of the voltage supervision:• 989_OP = VOLT_OFF• 989_CL = VOLT_ONIf there is no voltage supervision, then set the corresponding inputs as follows:• VOLT_OFF = 1• VOLT_ON = 012.5 Logic rotating switch for function selection and LHMIpresentation SLGAPC SEMOD114936-1 v412.5.1 IdentificationSEMOD167845-2 v3Function description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberLogic rotating switch for functionselection and LHMI presentationSLGAPC - -12.5.2 Application SEMOD114927-4 v6The logic rotating switch for function selection and LHMI presentation function(SLGAPC) (or the selector switch function block, as it is also known) is used to get aselector switch functionality similar with the one provided by a hardware multi-position selector switch. Hardware selector switches are used extensively by utilities,in order to have different functions operating on pre-set values. Hardware switches arehowever sources for maintenance issues, lower system reliability and extendedpurchase portfolio. The virtual selector switches eliminate all these problems.SLGAPC function block has two operating inputs (UP and DOWN), one blockinginput (BLOCK) and one operator position input (PSTO).SLGAPC can be activated both from the local HMI and from external sources(switches), via the IED binary inputs. It also allows the operation from remote (like thestation computer). SWPOSN is an integer value output, giving the actual outputnumber. Since the number of positions of the switch can be established by settings (seebelow), one must be careful in coordinating the settings with the configuration (if oneSection 12 1MRK 505 370-UUS AControl398 Busbar protection REB670 2.2 ANSIApplication manual
