The I and 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.
4.4
LCD
4.4.1
Small
The small sized HMI is available for 1/2 and 1/1 x 19” case. The LCD on the small
HMI measures 32 x 90 mm and displays 7 lines with up to 40 characters per line.
The first line displays the product name and the last line displays date and time.
The remaining 5 lines are dynamic. This LCD has no graphic display potential.
4.4.2
Medium
The following case sizes can be equipped with the medium size LCD:
•
1/2 x 19”
•
1/1 x 19”
This is a fully graphical monochrome LCD which measures 120 x 90 mm. It has 28
lines with up to 40 characters per line. To display the single line diagram, this LCD
is required.
Section 4
1MRK 502 014-UEN C
Understand the local human-machine interface
20
Operator's manual
