Clear Relay Records - GE B90 UR Series Instruction Manual

Low impedance bus differential system
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5.2 PRODUCT SETUP
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
as valid measurements. Unless dictated otherwise by a specific application, the default settings of "0.02
pu" for
NOTE
CURRENT CUT-OFF LEVEL
PATH: SETTINGS
PRODUCT SETUP
 CLEAR RELAY
 RECORDS
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 B90 responds to rising
5
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

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:
5-16
and
CURRENT CUT-OFF LEVEL
and "1.0 V" for

CLEAR RELAY RECORDS
CLEAR USER REPORTS:
Off
CLEAR EVENT RECORDS:
MESSAGE
Off
CLEAR OSCILLOGRAPHY?
MESSAGE
No
RESET UNAUTH ACCESS:
MESSAGE
Off
CLEAR DIR I/O STATS:
MESSAGE
Off
menu:
"
"
PUSHBUTTON 1 ON
"Self-reset"
"0.20 s"
B90 Low Impedance Bus Differential System
with care as the relay accepts lower signals
are recommended.
VOLTAGE CUT-OFF LEVEL
Range: FlexLogic operand
Range: FlexLogic operand
Range: FlexLogic operand
Range: FlexLogic operand
Range: FlexLogic operand.
Valid only for units with Direct I/O module.
menu:
USER PUSHBUTTON 1
5 SETTINGS
5.2.5 CLEAR RELAY RECORDS
SETTINGS
PRODUCT SETUP
SETTINGS
PRODUCT
GE Multilin

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