User Interface - Toshiba GRT100 Series Instruction Manual

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), equipped
with the RSM (Relay Setting and Monitoring) software via an RS232C port. Furthermore,
remote communication is also possible using a PC equipped with the RSM via an RS485 and a
protocol converter.
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 3.1.13, the front panel is provided with a liquid crystal display (LCD), light
emitting diodes (LED), operation keys, VIEW and RESET keys, monitoring jack and
RS232C connector.
LCD
The LCD screen, provided with a 4-line, 40-character back-light, displays detailed information
of the relay interior such as records, status and setting. The LCD screen is normally unlit, but
pressing the VIEW key will display the digest 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
5 minutes or longer without operation, the back-light will go off.
LED
There are 8 LED displays. The signal labels and LED colours are defined as follows:
Label
IN SERVICE
TRIP
ALARM
TESTING
(LED1)
(LED2)
(LED3)
(LED4)
LED1 to LED4 are configurable.
The TRIP LED lights up once the relay is operating and remains lit even after the trip command
goes off. The TRIP LED can be turned off by pressing the RESET key. Other LEDs are lit as
long as a signal is present and the RESET key is invalid while the signal is being maintained.
Color Remarks
Green
Lit when the relay is in service.
Red
Lit when a trip command is issued.
Red
Lit when a failure is detected.
Red
Lit when disabling automatic monitoring function or resetting the
time counting of THR and V/F elements by the scheme switches.
Red
Red
Red
Red
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