Cb Control Using The Hotkeys; Cb Control Using The Function Keys; Figure 130: Hotkey Menu Navigation - GE P4A Technical Manual

Chapter 12 - Monitoring and Control
For this to work you have to set the CB control by cell to option 1 Local, option 3 Local + Remote, option 5
Opto+Local, or option 7 Opto+Local+Remote in the CB CONTROL column.
7.2

CB CONTROL USING THE HOTKEYS

The hotkeys allow you to manually trip and close the CB without the need to enter the SYSTEM DATA column. For
this to work you have to set the CB control by cell to option 1 Local, option 3 Local+Remote, option 5 Opto
+Local, or option 7 Opto+Local+Remote in the CB CONTROL column.
CB control using the hotkey is achieved by pressing the right-hand button directly below LCD screen. This button is
only enabled if:
● The CB Control by setting is set to one of the options where local control is possible (option 1,3,5, or 7)
The CB Status Input is set to '52A', '52B', or 'Both 52A and 52B'
●
If the CB is currently closed, the command text on the bottom right of the LCD screen will read Trip. Conversely, if
the CB is currently open, the command text will read Close.
If you execute a Trip, a screen with the CB status will be displayed once the command has been completed. If
you execute a Close, a screen with a timing bar will appear while the command is being executed. This screen
also gives you the option to cancel or restart the close procedure. The time delay is determined by the Man Close
Delay setting in the CB CONTROL menu. When the command has been executed, a screen confirming the present
status of the circuit breaker is displayed. You are then prompted to select the next appropriate command or exit.
If no keys are pressed for a period of 5 seconds while waiting for the command confirmation, the device will revert
to showing the CB Status. If no key presses are made for a period of 25 seconds while displaying the CB status
screen, the device will revert to the default screen.
To avoid accidental operation of the trip and close functionality, the hotkey CB control commands are disabled for
10 seconds after exiting the hotkey menu.
The hotkey functionality is summarised graphically below:
CB closed
<CB STATUS>
CLOSED
EXIT
TRIP
E01209

Figure 130: Hotkey menu navigation

7.3

CB CONTROL USING THE FUNCTION KEYS

For most models, you can also use the function keys to allow direct control of the circuit breaker. This has the
advantage over hotkeys, that the LEDs associated with the function keys can indicate the status of the CB. The
262
Default Display
CB CTRL
HOTKEY
Hotkey Menu
EXECUTE
CB TRIP
CANCEL EXIT
CONFIRM
CB open
<CB STATUS> EXECUTE
OPEN CB CLOSE
CLOSE
CANCEL CONFIRM
P54A/B/C/E
EXECUTE CLOSE
30 secs
CANCEL RESTART
P54xMED-TM-EN-1