Clear Relay Records - GE B90 Instruction Manual

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
as valid measurements. Unless dictated otherwise by a specific application, the default settings of "0.02
pu" for
NOTE
CURRENT CUT-OFF LEVEL
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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 B90 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
and
CURRENT CUT-OFF LEVEL
and "1.0 V" for
VOLTAGE CUT-OFF LEVEL

CLEAR RELAY RECORDS
CLEAR USER REPORTS:
Off
CLEAR EVENT RECORDS:
Off
CLEAR OSCILLOGRAPHY?
No
RESET UNAUTH ACCESS:
Off
CLEAR DIR I/O STATS:
Off
menu:
"

USER PUSHBUTTON 1
"Self-reset"
"0.20 s"
B90 Low Impedance Bus Differential System
5.2 PRODUCT SETUP
with care as the relay accepts lower signals
are recommended.
5.2.4 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
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PRODUCT
5-11