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4. User Interface
4.1 Outline of User Interface
The user can access the relay from the front panel.
Local communication with the relay is also possible using a personal computer (PC) via an
RS232C port. Furthermore, remote communication is also possible using RSM (Relay Setting and
Monitoring) via an RS485 port.
This section describes the front panel configuration and the basic configuration of the menu tree of
the local human machine communication ports and HMI (Human Machine Interface).
4.1.1
Front Panel
As shown in Figure 4.1.1, the front panel is provided with a liquid crystal display (LCD), light
emitting diodes (LED), operation keys, and RS-232C connector.
LED
LED1 to LED8 are
user-configurable.
Monitoring jack
RS-232C connector
LCD
The LCD screen, provided with a 16-line, 40-character display and backlight, provides the user
with information such as records, statuses and settings. The LCD screen is normally unlit, but
pressing the VIEW key will display the digest screen (MIMIC screen) and pressing any key
other than VIEW and RESET will display the menu screen.
These screens are turned off by pressing the RESET key or END key. If any display is left for
IN SERVICE
ALARM
TRIP
TESTING
LOCAL
L/R
SELECT
REMOTE
Type
GRD150
Model
101A-10-10
In
1A
Vn
110V
Fn
50Hz
Vdc
110/125Vdc
Made in Japan
B
A
0V
Cursor keys
Figure 4.1.1 Front Panel
⎯
144
O
I
VIEW
RESET
ENTER
END
CANCEL
F2
F1
Freely programmable key
⎯
6 F 2 S 0 8 4 2
LCD
Control position key
Select key
Circle key
Bar key
View key
Reset key
Enter key
End key
Cancel key
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