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:
E01209
Default Display
HOTKEY
CB CTRL
Hotkey Menu
CB closed
CB open
<CB STATUS>
<CB STATUS>
EXECUTE EXECUTE
EXECUTE CLOSE
CLOSED
CB TRIP
OPEN CB CLOSE
TRIP
EXIT EXIT
CONFIRM
CONFIRMCANCEL CANCEL
CANCEL
RESTART
CLOSE
30 secs
Figure 249: 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
Chapter 17 - Monitoring and Control P543i/P545i
446 P54x1i-TM-EN-1
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