GE D90 Plus Instruction Manual page 385

CHAPTER 7: PROTECTION
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
Function
Range: Enabled, Disabled
Default: Disabled
This setting enables and disables the digital counter.
Name
Range: up to 12 alphanumeric characters
Default: Counter 1
An alphanumeric name may be assigned to a digital counter for diagnostic, setting, and
event recording purposes. The "Counter 1" text in event records and FlexLogic™
operands will be replaced by the text programmed in this setting.
Units
Range: up to 6 alphanumeric characters
Default: empty
This setting assigns a label to identify the unit of measure pertaining to the digital
transitions to be counted. The units label will appear in the corresponding actual values
status.
Preset
Range: –2 147 483 648 to 2 147 483 647 in steps of 1
Default: 0
This setting specifies the count to a required preset value before counting operations
begin, as in the case where a substitute relay is to be installed in place of an in-service
relay, or while the counter is running.
Compare
Range: –2 147 483 648 to 2 147 483 647 in steps of 1
Default: 0
This setting specifies the value to which the accumulated count value is compared.
Three FlexLogic™ output operands are provided to indicate if the present value is
greater than the set value
the set value (Counter 1
LO).
Up
Range: any FlexLogic™ operand
Default: Off
This setting selects the FlexLogic™ operand for incrementing the counter. If an enabled
up input is received when the accumulated value is at the limit of 2 147 483 647 counts,
the counter will rollover to –2 147 483 648 counts.
Down
Range: any FlexLogic™ operand or shared operand
Default: OFF
This setting selects an operand for decrementing the counter. If an enabled down input
is received when the accumulated value is at the limit of –2 147 483 648 counts, the
counter will rollover to 2 147 483 647 counts.
Block
Range: any FlexLogic™ operand or shared operand
Default: OFF
This setting selects an operand for blocking the counting operation. All counter
operands are blocked upon assertion of this operand.
(Counter 1 HI), equal to the set value
CONTROL ELEMENTS
(Counter 1 EQL), or less than
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