(GS) 3-
FIGURE 7: FRONT PANEL USER INTERFACE
1.8.1 Default display and menu time-out
The front 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)
− Check zone bias currents (A, B, C)
− Check zone differential currents (A, B, C)
From the default display it is also possible to view the other default display options using the
and keys. However, 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.
Whenever there is an uncleared alarm present in the relay (e.g. fault record, protection
alarm, control alarm etc.) the default display will be replaced by:
Alarms/Faults
Present
Entry to the menu structure of the relay is made from the default display and is not affected if
the display is showing the ‘Alarms/Faults present’ message.
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