12.4.4.4 SettingsPID-4086-SETTINGS v8Table 188:QCBAY Non group settings (basic)Name Values (Range) Unit Step Default DescriptionAllPSTOValid PriorityNo priority- - Priority Override Priority of originators,commands from both local, station andremote are allowedRemoteIncStation NoYes- - No Both Station and Remote control areallowed but not Local when local remoteswitch is in remote12.4.4.5 Operation principleM13446-4 v7The function sends information about the Permitted Source To Operate (PSTO) andblocking conditions to other functions within the bay for example, switch controlfunctions and voltage control functions. The functionality of the Bay control(QCBAY) function is mainly described by the LLN0 node in the IEC 61850-8-1edition 2 standard, applied to one bay. In IEC 61850 edition 1 the functionality isnot described by the LLN0 node or any other node, therefore the Bay controlfunction is represented as a vendor specific node in edition 1.Local panel switch M13446-7 v7The local panel switch is a switch that defines the operator place selection. Theswitch connected to this function can have three positions (remote/local/off). Thepositions are here defined so that remote means that operation is allowed fromstation and/or remote level and local means that operation is allowed from the IEDlevel. The local/remote switch is also on the control/protection IED itself, whichmeans that the position of the switch and its validity information are connectedinternally, not via I/O boards. When the switch is mounted separately from the IEDthe signals are connected to the function via I/O boards.When the local panel switch (or LHMI selection, depending on the set source toselect this) is in Off position, all commands from remote and local level will beignored. If the position for the local/remote switch is not valid the PSTO outputwill always be set to faulty state (3), which means no possibility to operate.To adapt the signals from the local HMI or from an external local/remote switch,the function blocks LOCREM and LOCREMCTRL are needed and connected toQCBAY.Permitted Source To Operate (PSTO) M13446-16 v9The actual state of the operator place is presented by the value of the PermittedSource To Operate, PSTO signal. The PSTO value is evaluated from the local/remote switch position according to Table 189. In addition, there are two settingsand one command that affect the value of the PSTO signal.If the setting AllPSTOValid is set to No Priority and the LR-switch position is inLocal or Remote state, the PSTO output is set to 5 (all), that is, it is permitted to1MRK 505 394-UEN A Section 12ControlLine differential protection RED650 2.2 IEC 355Technical manual
