GE Power Management
LPS-D Line Protection System
8-
5
8 LOCAL USER INTERFACE
8.1 INTRODUCTION
8
NOTE:
1.
The user is asked to key in a password only when they do not have SETTING or MASTER level access
privilege at the time of pressing the [SET] key.
2.
When the relay is first shipped, CONTROL, SETTING and MASTER passwords are loaded with factory
values. The factory values for the passwords are: SETTINGS (123.), ACTIONS (456.) and MASTER
(789.). Selecting
these
passwords does not increase the privilege level. All three passwords must first be
changed to user-defined passwords. It is important to understand that the user will not obtain higher privi-
lege levels until these default passwords have been changed. See the servicing section of this instruction
book for details.
8.1.6 EDIT PROTECTION SETTINGS
This option allows the user to modify the protection settings. Four different groups of settings are provided.
SETTING or MASTER privilege level must be selected in order to change settings. The settings can only be
viewed with CONTROL or default privilege level.
The Edit Protection Settings command is used to display or change protection settings. Each of the four
groups contain the same list of settings, but they may have different values. Only one group of settings can be
used at a time. However, any of the four groups may be viewed or changed at any time. The Protection Set-
tings are divided into categories. By using the arrow keys, the user can scroll through the categories and the
settings within each category. Each setting has been assigned a number so that it may be directly accessed.
If the user selects Edit Protection Settings by positioning the cursor on that line and pressing the [ENT] key,
the display will change to allow the user to select a group of settings.
The cursor will be positioned after the colon (see figure above). If a group was previously edited but not saved
then its number will be displayed after the colon and blink. If no group has been previously selected, there will
be no number after the cursor. A number must be entered after the colon or an error message will displayed.
The Act Grp= displayed on the bottom line indicates which group of settings is being used for protection. This
group number is only informational.
After the group has been selected, press the [ENT] key. If the blinking digit appears (indicating that there are
settings changes that have not been saved for that group), the display changes to indicate the changed set-
tings that will be lost if the new group selection is confirmed.
Unless the settings changes are saved using the
[END] key, the changes are not permanent and can be lost!
In the above figure, n is the settings group which was modified but not saved. The user presses [1/Y] (YES) to
indicate that changes to previously selected group should be dropped, or [3/N] (NO) to keep the changes and
select another group. If the user has pressed NO, the group selection prompt is redisplayed. It is recom-
mended the settings changes be saved in the EEPROM by pressing the [END] key. It is still possible to re-
select a group number which is blinking by pressing the [ENT] key.
When a group is finally selected, the display will have SETTINGS on the first line and the first three categories
on the next three lines. The cursor is positioned on the second line.
A few things should be noted at this point:
EDIT PROT
GROUP (1-4): 4
Lose Chgs to Gn?
Act Grp= #
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