Key
Function
The right arrow key navigates forward between screens and moves right in editing mode.
The left arrow key navigates backwards between screens and moves left in editing mode.
The up arrow key is used to move up in the single line diagram and in menu tree.
The down arrow key is used to move down in the single line diagram and in menu tree.
4.3
Key activated screens
4.3.1
The Help screen
The help screen is activated by pressing the Help key on the front panel of the IED.
It includes the submenu listed below:
•
General operation
The General Operation submenu provides information about the IED keypad.
The I an O keys are used to open (OFF) and close (ON) breakers and disconnectors
when using the Single Line Diagram (SLD) in direct control situations.
4.3.2
The Reset screen
The reset screen is activated by the Reset key on the front panel of the IED or via the
main menu. The reset screen includes the submenus listed below:
•
Reset LEDs
•
Reset lockout
•
Reset counters
•
Reset temperature functions
The Reset LEDs submenu consists of two lower level menus which are the “Start and
trip LEDs” and “All indication LEDs” submenus. To reset a counter, the actual
counter must first be selected. The submenus and the their structures are discussed in
the “Reset” chapter of this document.
Section 4
Understand the local human-machine interface
RET 670
Operator's manual
1MRK504049-UEN rev. D
19
