GE Power Management
DGP Digital Generator Protection System
8-
5
8 INTERFACE
8.3 KEYPAD
8
8.3.7 END KEY [END]
The [END] key causes two actions:
•
It is used to indicate that no more setting changes will be made.
•
It is used to end a session. That is, when the user presses the [END] key, the MMI becomes idle (without
the 15 minute time-out) and remote communication actions and settings are enabled if previously locked
by the MMI.
The key sequence for indicating the end of setting changes and/or the end of a session is: [END] [ENT]
When the user presses the [END] key, the display shows HIT ENT TO END. When the user follows with the
[ENT] key, the display shows ENDED.
1.
If no setting values have been entered, the DGP takes no action in response to the [END]/[ENT] key
sequence other than to enable action items locked previously by the MMI, to allow action commands from
remote communications to be executed.
2.
If the Digital Output Test was activated from the MMI, the [END]/[ENT] key sequence will deactivate the
test and turn protection on. This will also set the MMI Privilege Level to View Level.
3.
If settings are changed, the [END]/[ENT] key sequence causes the DGP to re-initialize itself with the new
settings and the event SETTING CHANGE DONE is logged in the sequence of events. The DGP then
checks whether or not outputs have been disabled by the user. If outputs have been disabled, the status
LED remains red; if outputs are enabled, and there are no critical self-test failures, the LED turns green.
The DGP protection software re-initializes itself to use the new setting values. The displayed message
changes to ENDED. The MMI unlocks the settings lock to allow remote communication to display and
change settings from the DGP system.
The ENDED message is blanked from the display when another key is pressed or after a 10 second delay.
In the latter case, the display remains blank until another key is pressed.
8.3.8 SETTINGS KEY [SET]
The [SET] key is used to display or change settings. See Table 2–1: DGP SYSTEM SETTINGS & RATINGS on
page 2–3 for a complete list of settings. The figure below shows the [SET] key menu structure.
The user may scroll through all the settings in a category using the arrow keys. Press the [SET] key will cause
the current category name to be displayed. The user may go to another category by using an arrow key or
enter a setting number, followed by the [ENT] key, to go to another setting.
To change a setting, the setting must first be displayed as shown above. The data entry keys are then used to
enter a new value. When the first data entry key is pressed, the abbreviated name remains on the display but
the value is blanked and a blinking colon (:) appears in place of the equals sign (=). Each data entry key is dis-
played as it is pressed, in a lower intensity, and the colon (:) continues to blink. There are some settings that
logically represent a state rather than a number (i.e., YES/NO). For these settings, the [1/Y] and [3/N] keys are
used to indicate the state ([1/Y] = YES and [3/N] = NO) and the words YES or NO are displayed. After the last
digit is entered and the [ENT] key pressed, the blinking colon (:) is replaced by an equals sign (=), the value is
displayed at normal intensity, and the DGP stores the new value. If the [PRT] key, [CLR] key, arrow keys, or
any command key is pressed instead of [ENT], the new value is not stored and the old value retained.
It is important to note that as soon as any value is entered, the DGP system does not stop
its protection activities. Settings are stored in a temporary buffer until the user presses the
[END] [ENT] key sequence. This causes a transfer of settings from the buffer to EEPROM
and re-initialization of protection. If the [END] [ENT] sequence is not performed and the
DGP is allowed to time out, all of the settings in temporary storage will be lost.
NOTE
Summary of Contents for DGP Series
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Page 192: ...8 18 DGP Digital Generator Protection System GE Power Management 8 5 PASSWORDS 8 INTERFACE 8...
Page 260: ...B 4 DGP Digital Generator Protection System GE Power Management B 1 CHANGE NOTES APPENDIXB B...
Page 262: ...B 6 DGP Digital Generator Protection System GE Power Management B 1 CHANGE NOTES APPENDIXB B...
Page 268: ...D 2 DGP Digital Generator Protection System GE Power Management D 1 DGP WARRANTY APPENDIXD D...
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Page 277: ...GE Power Management DGP Digital Generator Protection System NOTES...