• QB9_OP = 1• QB9_CL = 0• QC9_OP = 1• QC9_CL = 0If, in this case, line voltage supervision is added, then rather than setting QB9 toopen state, specify the state of the voltage supervision:• QB9_OP = VOLT_OFF• QB9_CL = VOLT_ONIf there is no voltage supervision, then set the corresponding inputs as follows:• VOLT_OFF = 1• VOLT_ON = 015.5 Logic rotating switch for function selection andLHMI presentation SLGAPC SEMOD114936-1 v515.5.1 IdentificationSEMOD167845-2 v3Function description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberLogic rotating switch for functionselection and LHMI presentationSLGAPC - -15.5.2 Application SEMOD114927-4 v7The 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 geta selector switch functionality similar with the one provided by a hardware multi-position selector switch. Hardware selector switches are used extensively byutilities, in order to have different functions operating on pre-set values. Hardwareswitches are however sources for maintenance issues, lower system reliability andextended purchase portfolio. The virtual selector switches eliminate all theseproblems.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 (like1MRK 506 369-UEN B Section 15ControlLine distance protection REL670 2.2 IEC 691Application manual
