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Flexlogic™ Equation Editor; Flexlogic Timers - GE UR Series Instruction Manual

Line differential relay.
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5.4 FLEXLOGIC™
Virt Op 3 On
OR(4)
LATCH (S,R)
Virt Op 3 On
TIMER 1
Cont Ip H1c On
OR(3)
TIMER 2
= Virt Op 4
END
In the expression above, the Virtual Output 4 input to the 4-input OR is listed before it is created. This is typical of a
form of feedback, in this case, used to create a seal-in effect with the latch, and is correct.
8.
The logic should always be tested after it is loaded into the relay, in the same fashion as has been used in the past.
Testing can be simplified by placing an "END" operator within the overall set of FlexLogic™ equations. The equations
will then only be evaluated up to the first "END" operator.
The "On" and "Off" operands can be placed in an equation to establish a known set of conditions for test purposes, and
the "INSERT" and "DELETE" commands can be used to modify equations.
ÖØ
PATH: SETTINGS
FLEXLOGIC
FLEXLOGIC
EQUATION EDITOR
5
There are 512 FlexLogic™ entries available, numbered from 1 to 512, with default 'END' entry settings. If a "Disabled" Ele-
ment is selected as a FlexLogic™ entry, the associated state flag will never be set to '1'. The '+/–' key may be used when
editing FlexLogic™ equations from the keypad to quickly scan through the major parameter types.
ÖØ
PATH: SETTINGS
FLEXLOGIC
FLEXLOGIC
TIMER
1
There are 32 identical FlexLogic™ timers available, numbered from 1 to 32. These timers can be used as operators for
FlexLogic™ equations.
TIMER 1 TYPE:
This setting is used to select the time measuring unit.
TIMER 1 PICKUP DELAY:
This setting is used to set the time delay to pickup. If a pickup delay is not required, set this function to "0".
TIMER 1 DROPOUT DELAY:
This setting is used to set the time delay to dropout. If a dropout delay is not required, set this function to "0".
5-48
Ö
FLEXLOGIC EQUATION EDITOR
FLEXLOGIC ENTRY
END
FLEXLOGIC ENTRY 512:
MESSAGE
END
ÖØ

FLEXLOGIC TIMERS

TIMER
1
TYPE: millisecond
TIMER
1 PICKUP
MESSAGE
DELAY:
TIMER
1 DROPOUT
MESSAGE
DELAY:
L90 Line Differential Relay
5.4.5 FLEXLOGIC™ EQUATION EDITOR
Range: FlexLogic™ parameters
1:
Range: FlexLogic™ parameters
Ö
FLEXLOGIC TIMER 1(32)
Range: millisecond, second, minute
Range: 0 to 60000 in steps of 1
0
Range: 0 to 60000 in steps of 1
0
5 SETTINGS
5.4.6 FLEXLOGIC™ TIMERS
GE Power Management

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L90

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