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8.1 INTRODUCTION
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First, the user has the ability to directly enter a setting number. If this is done, the setting number will be
displayed in the upper right-hand corner. To select the setting after typing the setting number the [ENT] key
must be pressed. If the number is valid, the setting is selected. The [ENT] key must be pressed again to
change the setting. If the setting number is invalid, an error message will be displayed on the bottom line of
the display and must be cleared with the [CLR] key before proceeding.
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Second, there is a blinking square cursor on the left side of the display. This indicates the currently
selected item. To select a different item using the cursor, use the ↑ and ↓ keys. Pressing the [ENT] key will
activate the item in the current cursor position.
The [SET] key has an additional function – it will return to the level above the current menu level each time it is
pressed until the top SETTINGS menu is reached. For example, if the user is currently entering a new setting
value, pressing the [SET] key will return to the list of settings in the current category. Pressing it again will
return to the list of settings categories.
Once a category is selected and the [ENT] key is pressed, the first three items in that category are displayed
as 10-character mnemonics of the settings and their values. For example, if the [ENT] key was pressed when
the cursor is positioned on the line displaying Z3DISTANCE, the following will be displayed:
with the cursor positioned on the second line from the top. Gn indicates the group number currently being
edited and S#### indicates the setting number on which the cursor is currently placed.
The setting number to be edited can be chosen by entering the number and pressing the [ENT] key. The
entered number is echoed at the same place (right corner of the top line) where the current setting item num-
ber is displayed. After the [ENT] key is pressed, the number is checked for validity. If it is valid, the cursor will
be positioned on the corresponding setting; if it is invalid, an error message is displayed.
To edit a setting, the item should be first be indicated with the cursor, then selected with the [ENT] key. The
information related to the setting is displayed as follows.
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The cursor is positioned on the second line, at the first digit of the displayed value.
•
When the first data entry key is pressed, the setting mnemonic will remain on the display but the equals
sign (=) will be replaced by a blinking colon (:). Each data entry key will be displayed as it is pressed, and
the colon (:) symbol will continue to blink. Remember that the [1/Y] key is also the YES key and the [3/N] is
also the NO key. After the last digit of the new value is entered, the user presses the [ENT] key. If the new
value is valid, then the blinking colon (:) will be replaced by the equals sign (=) and the relay will store and
8
display the new setting. If the value is not valid, an error message will displayed on the fourth line and the
old setting value will be retained, as shown below:
Two checks are made before accepting the user-entered value. When it is valid, the privilege level will be
checked for either SETTING or MASTER level and communications must not be in the process of changing
settings. If the check fails then an error message is displayed and the setting is not changed.
8-
6
Z3DISTANCE Gn S0301
Z3PHASE = YES
Z3PHREACH = 20.32
Z3PCHARANG = 105
Z3DISTANCE Gn S0302
Z3PHREACH : 51.37
Zone 3 Ph reach(Ohm)
VALUE OUT OF RANGE
LPS-O Line Protection System
8 LOCAL USER INTERFACE
GE Power Management
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