5 SETTINGS
components. The cut-off operation applies to quantities used for metering, protection, and control, as well as those
used by communications protocols. Raw samples of the voltages available via oscillography are not subject cut-off.
Lower 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" for
CURRENT CUT-OFF LEVEL and "1.0 V" for VOLTAGE CUT-OFF LEVEL are recommended.
NOTE
PATH: SETTINGS
PRODUCT SETUP
CLEAR RELAY
RECORDS
MESSAGE
MESSAGE
MESSAGE
MESSAGE
Selected records can be cleared from user-programmable conditions with FlexLogic™ operands. Assigning user-program-
mable pushbuttons to clear specific records are typical applications for these commands. Since the C30 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
CLEAR RELAY RECORDS
"
PUSHBUTTON 1 ON
CLEAR DEMAND:
2.
Set the properties for user-programmable pushbutton 1 by making the following changes in the
SETUP
USER-PROGRAMMABLE PUSHBUTTONS
PUSHBUTTON 1 FUNCTION:
PUSHBTN 1 DROP-OUT TIME:
GE Multilin
CLEAR RELAY RECORDS
CLEAR EVENT RECORDS:
Off
CLEAR OSCILLOGRAPHY?
No
CLEAR DATA LOGGER:
Off
RESET UNAUTH ACCESS:
Off
CLEAR DIR I/O STATS:
Off
menu:
"
USER PUSHBUTTON 1
"Self-reset"
"0.20 s"
C30 Controller System
5.2 PRODUCT SETUP
5.2.3 CLEAR RELAY RECORDS
Range: FlexLogic™ operand
Range: FlexLogic™ operand
Range: FlexLogic™ operand
Range: FlexLogic™ operand
Range: FlexLogic™ operand.
Valid only for units with Direct I/O module.
SETTINGS
SETTINGS
menu:
5
PRODUCT SETUP
PRODUCT
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