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9. KEYPAD AND DISPLAY
DFF relay has a 20-key keypad and a 32-character LCD (Liquid Crystal Display), which are distributed in two rows of
16 characters each. The layout of the keypad is displayed in the following figure:
The keypad program uses menus to provide access to the different functions of the relay. These are divided into five
big groups, each of them is accessed by means of a different key. These groups are the following:
Information: It provides data about the relay status. To access this menu press the INF key.
Control Operations: It allows to synchronize the date and time of the relay and to manually trigger the oscillography.
To access this menu press the ACT key.
Settings: It allows to view and modify all the settings of the relay. To access this menu press the SET key.
Configuration Menu: It allows to access to the configuration of the relay, allowing the modification of communication
baud rates, passwords, etc. To access this menu press the following sequence of key strokes: "7" "1" "6" "9"
(ASCII codes for "G" "E", "71" "69" ). In order to be able to access this menu, the relay must be in the main screen.
Single Key Menu: The DFF relay allows a simplified operating mode by pressing the ENT key. It is not necessary to
remove the front cover to access to this mode.
In the standby mode, the following message is displayed:
Here one of the last five groups must be selected. In order to select other group, you must return to this screen and
press the corresponding key.
Once you are in a group, another one cannot be selected without quitting first and going back to the standby screen.
You can move inside a group by pressing ENT, CLR, ↑, ↓, ← and → keys. Their meanings are as follows:
ENT : To accept the option that appears on the screen at that moment. It is equivalent to go down one level in the
tree menu.
CLR : To leave the option that appears on the screen at that moment. It is equivalent to go up one level in the tree
menu.
↑/↓: Change the option. It is equivalent to a horizontal movement inside a menu. When the desired option appears on
the screen, select it by pressing the ENT key.
GEK-106166E
KEYPAD AND DISPLAY
SET
1/Y
2
4
INF
5
←
ACT
7
8
END
+/-
0
DFF
GENERAL ELECTRIC
DFF Digital Feeder Relay
3/N
CLR
6
↑
→
9
↓
.
ENT
45
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