GE D90 Plus Instruction Manual page 420

PROTECTION FLEXLOGIC
410
Figure 353: Protection FlexElements configuration settings
The following settings are available for each protection FlexElement.
Function
Range: Enabled, Disabled
Default: Disabled
This setting enables and disables the corresponding FlexElement.
Name
Range: up to 6 alphanumeric characters
Default: FxE 1
An alphanumeric identifier can be assigned to a FlexElement for diagnostic, setting, and
event recording purposes. The default "FxE 1" text that appears in event records and
logic operands are replaced by the text programmed in this setting.
Input Plus
Range: any analog actual value parameter or OFF
Default: OFF
This setting specifies the first (non-inverted) input to the FlexElement. A value of zero is
assumed as the input if this setting is "OFF." For proper operation of the element, at least
one input must be selected. Otherwise, the element does not assert its output operands.
Input Minus
Range: any analog actual value parameter or OFF
Default: OFF
This setting specifies the second (inverted) input to the FlexElement. A value of zero is
assumed as the input if this setting is set to "OFF." For proper operation of the element at
least one input must be selected. Otherwise, the element does not assert its output
operands. Use this input to invert the signal if needed for convenience, or to make the
element respond to a differential signal such as for a top-bottom oil temperature
differential alarm. The element does not operate if the two input signals are of different
types (for example if one tries to use active power and phase angle to build the effective
operating signal).
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 7: PROTECTION