5-26 L30 Line Current Differential System GE Multilin
5.2 PRODUCT SETUP 5 SETTINGS
5
Selected 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 rising
edges 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 PRODUCT
SETUP USER-PROGRAMMABLE PUSHBUTTONS USER PUSHBUTTON 1 menu:
PUSHBUTTON 1 FUNCTION: “Self-reset”
PUSHBTN 1 DROP-OUT TIME: “0.20 s”
MESSAGE
CLEAR CHNL STATUS:
Off
Range: FlexLogic operand
MESSAGE
RESET UNAUTH ACCESS:
Off
Range: FlexLogic operand
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