Alstom MiCOM P545 - 1.8 Front panel user interface (keypad and LCD); 1.8.1 Default display and menu time-out

P54x/EN GS/La4 Getting Started
(GS) 3-10 MiCOM P543, P544, P545 & P546
1.8 Front panel user interface (keypad and LCD)
Whe
n the keypad is exposed it provides full access to the menu options of the relay, with the
information displayed on the LCD.
The
,  and  keys are used for menu navigation and setting value changes. These
keys have an auto-repeat function if any of them are held continually. This can speed up
both setting value changes and menu navigation; the longer the key is held pressed, the
faster the rate of change or movement.
System
frequency
Date and time
3-phase voltage
Alarm messages
Other default displays
Column 1
Sytem data
Column 2
View records
Column n
Group 4
Overcurrent
Data 1.1
Language
Data 2.1
Last record
Data n.1
|>1 function
Data 1.2
Password
Data 2.2
Time and date
Data n.2
|>1 directional
Data 1.n
Password
level 2
Data 2.n
C  A voltage
Data n.n
|> char angle
Other setting
cells in
column 1
Other setting
cells in
column 2
Other setting
cells in
column n
Other column headings
Note: The C key will return
to column header
from any menu cell
C
C
C
P0105ENa
GS
Figure 4 Front panel user interface
1.8.1 Default display and menu time-out
The fro
nt panel menu has a default display, the contents of which can be selected from the
following options in the ‘default display’ cell of the ‘Measure’t setup’ column:
 Date and time
 Relay description (user defined)
 Plant reference (user defined)
 System frequency
 3 phase voltage
 Access level
From the default display it is also possible to view the other default display options using the
and keys. If there is no keypad activity for the 15 minute timeout period, the default
display will revert to that selected by the setting and the LCD backlight will turn off. If this
happens any setting changes that have not been confirmed will be lost and the original
setting values maintained.