GE LPS-O Instruction Manual page 185

8 LOCAL USER INTERFACE 8.1 INTRODUCTION
8.1.20 CHANGE PASSWORD
This category is used to change the SETTINGS, CONTROL and MASTER passwords. The arrow keys may be
used to scroll to the desired item. To select an item press the [ENT] key. Once a password has been selected
to be changed, only the number keys can be used to enter the old password. The digits are echoed with an
asterisk (*) for privacy. When the [ENT] key is pressed, the old password is checked for validity. If the password
is valid, the relay will prompt for the new password.
Only the number keys can be used to enter the new password. Once the new password has been entered, the
relay will prompt to re-enter the new password to ensure no mistakes were made while typing.
If the two password entries are identical then PASSWD CHANGED is displayed and the new password
replaces the old one. Otherwise, PASSWD NOT CHANGED is displayed and the password is not changed.
No privilege level is needed to use this command and communications is not checked.
8.1.21 ENABLE/DISABLE PASSWORDS
This category is used to enable/disable LUI passwords. MASTER privilege level is required.
If passwords are currently enabled the relay will ask to disable the passwords; if passwords are currently dis-
abled, the relay will ask to enable the passwords. In either case, if [3/N] (NO) is pressed, CANCELED is dis-
played and the command is terminated.
The [1/Y] (YES) is pressed, the current state for the operation of the passwords will be changed. If the current
state is disabled, the relay will ask for the MASTER password. PASSWORDS ENABLED is displayed and
passwords will be required to perform most of the relay commands through the keypad. When the passwords
are enabled, the passwords in effect before disabling the passwords are restored. If the passwords are dis-
abled when the command is executed, PASSWORDS DISABLED is displayed and no passwords will be
required to perform most relay commands. Remember: a MASTER level password is required to perform this
command whether or not passwords are enabled.
8.1.22 RESET DATA
This command is used to reset the fault, event, oscillography and breaker health data.
Use the arrow keys or choose the item number to select an item to be reset. Once an item has been selected,
press the [ENT] key again. The user is prompted to reset the data. If [3/N] (NO), [ENT] is pressed, CANCELED
is displayed and the data is not reset. If [1/Y] (YES), [ENT] is pressed, the data is reset and a message dis-
played which must be cleared with the [CLR] key. If a fault is in progress while attempting to reset fault data or
equipment duty data, an error message is displayed and the data is not reset.
An event is logged for each successful reset operation. CONTROL or MASTER privilege is needed to perform
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this command and communications must not be executing an action command.
8.1.23 ADJUST CONTRAST
The contrast level of the LCD display can be adjusted using this command. The ↑ or ↓ keys are used to
increase or decrease the contrast of the display, respectively. As the arrow keys are pressed, the contrast
change will be visible on the display. Increasing the contrast will make the characters appear darker on the dis-
play; decreasing the contrast will make the characters lighter on the display.
If the minimum or maximum contrast limit has been reached, the relay will change the prompt to INCREASE or
DECREASE only (depending on the limit reached). Pressing the other arrow will not affect the contrast.
An error message will be displayed if the data entry keys are used. CONTROL or MASTER privilege is
required to use this command.
GE Power Management LPS-O Line Protection System 8-
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