GE L60 Instructions Manual page 375

CHAPTER 5: SETTINGS
specified operators to create an output. The final output of an equation is a numbered register called a virtual output.
Virtual outputs can be used as an input operand in any equation, including the equation that generates the output, as a
seal-in or other type of feedback.
A FlexLogic equation consists of parameters that are either operands or operators. Operands have a logic state of 1 or 0.
Operators provide a defined function, such as an AND gate or a Timer. Each equation defines the combinations of
parameters to be used to set a Virtual Output flag. Evaluation of an equation results in either a 1 (=ON, or flag set) or 0
(=OFF, or flag not set). Each equation is evaluated at least four times every power system cycle.
Some types of operands are present in the relay in multiple instances, for example contact and remote inputs. These types
of operands are grouped together (for presentation purposes only) on the front panel display. The table lists characteristics
of the different types of operands.
Table 5-20: L60 FlexLogic operand types
Operand type State
Contact Input On
Off
Contact Output Contact Closed
(type Form-A contact
Current On
only)
Voltage On
Voltage Off
Direct Input On
Element Pickup
(Analog)
Dropout
Operate
Block
Element Pickup
(Digital)
Dropout
Operate
Element Higher than
(Digital Counter)
Equal to
Lower than
Fixed On
Off
RxGOOSE Boolean On
Virtual Input On
Virtual Output On
The following table lists the operands available for the relay. The operands can be viewed online by entering the IP address
of the relay in a web browser and accessing the Device Information Menu.
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
Example of format Characteristics
[Input Is '1' (= ON) if...]
Cont Ip On Voltage is applied presently to the input (external contact
closed)
Cont Ip Off Voltage is not applied presently to the input (external
contact open)
Cont Op 1 Closed Contact output is closed
Cont Op 1 Ion Current is flowing through the contact
Cont Op 1 VOn Voltage exists across the contact
Cont Op 1 VOff Voltage does not exist across the contact
DIRECT INPUT 1 On The direct input is presently in the ON state
PHASE TOC1 PKP The tested parameter is presently above the pickup setting
of an element that responds to rising values or below the
pickup setting of an element that responds to falling values
PHASE TOC1 DPO This operand is the logical inverse of the above PKP
operand
PHASE TOC1 OP The tested parameter has been above/below the pickup
setting of the element for the programmed delay time, or
has been at logic 1 and is now at logic 0 but the reset timer
has not finished timing
PHASE TOC1 BLK The output of the comparator is set to the block function
Dig Element 1 PKP The input operand is at logic 1
Dig Element 1 DPO This operand is the logical inverse of the above PKP
operand
Dig Element 1 OP The input operand has been at logic 1 for the programmed
pickup delay time, or has been at logic 1 for this period and
is now at logic 0 but the reset timer has not finished timing
Counter 1 HI The number of pulses counted is above the set number
Counter 1 EQL The number of pulses counted is equal to the set number
Counter 1 LO The number of pulses counted is below the set number
On Logic 1
Off Logic 0
RxGOOSE Boolean 1 On The RxGOOSE Boolean is presently in the ON state
Virt Ip 1 On The virtual input is presently in the ON state
Virt Op 1 On The virtual output is presently in the set state (that is,
evaluation of the equation that produces this virtual output
results in a "1")
FLEXLOGIC
5
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