5-26 L30 Line Current Differential System GE Multilin5.2 PRODUCT SETUP 5 SETTINGS5Lower the VOLTAGE CUT-OFF LEVEL and CURRENT CUT-OFF LEVEL with care as the relay accepts lower sig-nals as valid measurements. Unless dictated otherwise by a specific application, the default settings of “0.02 pu” forCURRENT CUT-OFF LEVEL and “1.0 V” for VOLTAGE CUT-OFF LEVEL are recommended.5.2.3 CLEAR RELAY RECORDSPATH: SETTINGS PRODUCT SETUP CLEAR RELAY RECORDSSelected records can be cleared from user-programmable conditions with FlexLogic operands. Assigning user-programma-ble pushbuttons to clear specific records are typical applications for these commands. Since the L30 responds to risingedges of the configured FlexLogic operands, they must be asserted for at least 50 ms to take effect.Clearing records with user-programmable operands is not protected by the command password. However, user-program-mable pushbuttons are protected by the command password. Thus, if they are used to clear records, the user-programma-ble pushbuttons can provide extra security if required.For example, to assign user-programmable pushbutton 1 to clear demand records, the following settings should be applied.1. Assign the clear demand function to pushbutton 1 by making the following change in the SETTINGS PRODUCT SETUP CLEAR RELAY RECORDS menu:CLEAR DEMAND: “ PUSHBUTTON 1 ON ”2. Set the properties for user-programmable pushbutton 1 by making the following changes in the SETTINGS PRODUCTSETUP USER-PROGRAMMABLE PUSHBUTTONS USER PUSHBUTTON 1 menu:PUSHBUTTON 1 FUNCTION: “Self-reset”PUSHBTN 1 DROP-OUT TIME: “0.20 s” CLEAR RELAY RECORDSCLEAR FAULT REPORTS:OffRange: FlexLogic operandMESSAGE CLEAR EVENT RECORDS:OffRange: FlexLogic operandMESSAGE CLEAR OSCILLOGRAPHY?NoRange: FlexLogic operandMESSAGE CLEAR DATA LOGGER:OffRange: FlexLogic operandMESSAGE CLEAR ARC AMPS 1:OffRange: FlexLogic operandMESSAGE CLEAR ARC AMPS 2:OffRange: FlexLogic operandMESSAGE CLEAR CHNL STATUS:OffRange: FlexLogic operandMESSAGE RESET UNAUTH ACCESS:OffRange: FlexLogic operandNOTE
