Toshiba GR-200-5 Instruction Manual

Also see for GR 200 Series: Instruction manual Instruction manual Instruction manual Instruction manual Instruction manual

6F2T0207 (0.01)GRE200 (5,6)- 242 -‡Note: PLC connection point ‘CB_MANUAL_CLOSE’ is provided so that the user canutilize the ARC function to close the CB manually if an external switch (such as apush button on a relay/control panel) is required for manual operation.(vi) Success check logic - settingsFigure 2.22-8 illustrates the Success check logic that determines whether the CB closedsuccessfully for the ARC function reclose operation. When this check is required, On should beset for scheme switch [ARC-SucChk].If it is determined that all CB phases were closed successfully, (i.e. the‘CB_ALLPH_CLOSE’ signal remains high for a sufficient duration after the ‘ARC SHOT’ signalis issued by the Issuing command logic), an ‘ARC CLOSE SUCCESS’ signal is issued. On theother hand, if the ‘ARC SHOT’ single is issued but the CB has failed to close, then on thetimeout of the [TARCDSUC] timer, an ‘ARC CLOSE FAIL’ signal is issued.SR≥1ARC SHOTARC_START t 00.10-100.0s& ARC SHOT RSTARCDSUC8C00001B6FARC NOT_IN-PROG&&0.1s1ARC CLOSE FAILARC CLOSE SUCCESSt 0CB_ALLPH_CLOSE0.02sOffOn8000001B70ARC-SucChkARC COORDInitiation logicInitiation logicCoordination logicFrom PROT_COMMIssuing command logicTo Initiation logicTo Final trip stageFigure 2.22-8 Success check logicNote: When the scheme switch ([ARC-SucChk]=Off), the functionality of the[TARCDSUC] timer is explained in Chapter 2.22.2(xi)-2.(vii) Shot counter logic behaviorThe Shot counter logic is shown in Figure 2.22-9. The following rule applies in Table 2.22-1;the ‘SHOT_1ST’ signal is issued to the flip-flop logic unconditionally; the ‘SHOT_2ND’ signalis issued to the flip-flop when the ‘ARC SHOT1’ signal is issued, see Figure 2.22-2.