5-156 B30 BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUALSYSTEM SETUP CHAPTER 5: SETTINGS5The switch element has direct hard-coded connections to the IEC 61850 model as shown in the logic diagrams. This allowsremote open/close operation of each switch, using either CSWI or XSWI IEC 61850 logical nodes. IEC 61850 select-before-operate functionality, local/remote switch functionality, along with blocking open/close commands are provided. Note thatthe dwell time for the IEC 61850 trip and close commands shown is one protection pass only. To maintain close/opencommand for a certain time, do so using the seal-in timers SWITCH 1 OPEN SEAL-IN and SWITCH 1 CLOSE SEAL-IN, on thecontact outputs using the "Seal-in" setting, or in FlexLogic.Figure 5-72: Disconnect switch control logic (sheet 1 of 3)IEC 61850 functionality is permitted when the B30 is in “Programmed” mode and not in local control mode.
