Table of Contents
Advertisement
8 LOCAL USER INTERFACE
After changing a setting value, the setting name and value remain on the display. The arrow keys may be
pressed to edit the next setting in the category or any Command key pressed to begin performing other opera-
tions. If the user presses the [SET] key, the next higher level menu consisting of the settings items in the
present category is displayed with the cursor positioned on the last item edited. The arrow keys may then be
used to select another setting item.
If the [SET] key is pressed again, the setting category screen with the cursor positioned on the latest edited
category will be displayed. If the [SET] key is pressed for the third time, the group selection display, with the
current group number blinking, will appear. If any of the other Command keys are pressed, the command menu
associated with the Command key will be displayed.
It is important to note that the LPS-D continues its protection activities while setting values are being entered.
Entered settings are stored in a temporary buffer until the user presses [END] and selects one of the save set-
tings item. This will cause a transfer of settings from the buffer to EEPROM and the protection to re-initialize, if
there is not a fault in progress at that time. If the settings are not saved and the relay is allowed to time out (15
minutes), all of the settings in temporary storage will be lost.
As soon as the user has made the first valid setting change, the LED which indicates LPS-D status starts blink-
ing, to remind the user to save the settings after editing them. It continues to blink until the user saves the set-
tings by pressing [END] or the relay times out. In order to safeguard changed settings the following message
will be displayed whenever the [ACT] or [INF] keys are pressed after changing but not saving settings.
At this point the user can press the [END] key to save the changed settings in EEPROM. The user may also
press the [ACT] or [INF] keys and proceed with the other operations. The setting changes will continue to
reside in temporary memory until the user later presses the [END] key or the relay times out.
The [END] key has two purposes. The first is to transfer settings changes from the temporary area into the cor-
rect group. The other is to return the user to the VIEW or default privilege level. Each function can be accom-
plished without the other.
If no settings changes have been made, the only option when pressing [END] is Quit. This returns to the
default privilege level. If settings changes were made, then three choices are available:
1. Save set & quit – The edited settings are saved and the privilege level is returned to default. The mes-
sages SETTINGS SAVED and SESSION ENDED are displayed, reporting the action taken (see below).
2. Save settings – The edited settings are saved and the current privilege level is retained. For this choice
only SETTINGS SAVED is displayed
3. Quit – If the settings have not been saved, the relay prompts to save them. If [1/Y] (YES) and [ENT] are
pressed, the settings are saved and the privilege level returns to default. Both SETTINGS SAVED and
SESSION ENDED are displayed. If [3/N] (NO) and [ENT] are pressed, the settings are not saved and the
privilege level returns to default.
GE Power Management
To Save Settings
Press END key
END
1.Save settings & quit
2.Save settings
3.Quit
LPS-D Line Protection System
8.1 INTRODUCTION
8.1.7 [END] KEY
8-
7
8
Advertisement
Table of Contents
