Flexlogic™ Equation Editor - GE B90 Instruction Manual

Ur series low impedance bus differential system
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5.4 FLEXLOGIC™
= Virt Op 3
Virt Op 4 On
Virt Op 1 On
Virt Op 2 On
Virt Ip 1 On
DIG ELEM 1 PKP
XOR(2)
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 four-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.
5

PATH: SETTINGS
FLEXLOGIC
 FLEXLOGIC
 EQUATION EDITOR
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.

PATH: SETTINGS
FLEXLOGIC
 FLEXLOGIC
 TIMER
1
There are 32 identical FlexLogic™ timers available. 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: Sets the time delay to pickup. If a pickup delay is not required, set this function to "0".
5-82
FLEXLOGIC EQUATION EDITOR
FLEXLOGIC ENTRY
END
FLEXLOGIC ENTRY
MESSAGE
END
FLEXLOGIC ENTRY 512:
MESSAGE
END

FLEXLOGIC TIMERS
TIMER
1
TYPE: millisecond
TIMER
1 PICKUP
MESSAGE
DELAY:
TIMER
1 DROPOUT
MESSAGE
DELAY:
B90 Low Impedance Bus Differential System
5.4.5 FLEXLOGIC™ EQUATION EDITOR
Range: FlexLogic™ operands
1:
Range: FlexLogic™ operands
2:
Range: FlexLogic™ operands
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 Multilin

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