Specifications

7SR242 Duobias Settings, Configuration & Instruments Guide

1.2 Operation Guide

1.2.1User Interface Operation

The basic menu structure flow diagram is shown in Figure 1.2-2. This diagram shows the main modes of display:

Settings Mode, Instrument Mode, Fault Data Mode and Control Mode.

When the relay leaves the factory all data storage areas are cleared and the settings set to default as specified in

settings document.

When the relay is first energised the user is presented with the following message: -

Duobias 7SR242

_______________________________

ENTER to CONTROL

Figure 1-4 Relay Identifier Screen

On the factory default setup the relay LCD should display the relay identifier, on each subsequent power-on the

screen that was showing prior to the last power-off will be displayed.

The push-buttons on the fascia are used to display and edit the relay settings via the LCD, to display and activate

the control segment of the relay, to display the relays instrumentation and Fault data and to reset the output

relays and LED’s.

The five push-buttons have the following functions:

READ DOWN READ UP

These pushbuttons are used to navigate the menu structure and to adjust settings.

ENTER

The ENTER push-button is used to initiate and accept setting changes.

When a setting is displayed pressing the ENTER key will enter the edit mode, the setting will flash and can now

be changed using the or  buttons. When the required value is displayed the ENTER button is pressed again

to accept the change.

When an instrument is displayed pressing ENTER will toggle the instruments favourite screen status.

CANCEL

This push-button is used to return the relay display to its initial status or one level up in the menu structure.

Pressed repeatedly will return to the Relay Identifier screen. It is also used to reject any alterations to a setting

while in the edit mode.

This push-button is used to reset the fault indication on the fascia. When on the Relay Identifier screen it also

acts as a lamp test button, when pressed all LEDs will momentarily light up to indicate their correct operation. It is

also moves the cursor right  when navigating through menus and settings.