Liquid Crystal Display (Lcd); Figure 2-7 Warning Symbols - Siemens 7SR45 Argus User Manual

For safety reasons, the following warning symbols are displayed on the label.
7SR45 Argus Relay consists of the following Human machine interface (HMI):
1. LCD
2. Keypads
3. LED
4. Trip flag indicator
5. USB
6. Battery Cover
2.6.1

Liquid Crystal Display (LCD)

The 7SR45 Argus Relay consists of 16x2 LCD to display the settings, instrumentation, and fault data.
By using the LCD, the user can view or edit a configuration parameter. The LCD allows the user to view the
following:
• Real time status of relay such as BI and BO
• Battery profile
• Auxiliary power status
• Primary and secondary current values of each phase and earth
• General alarms
LCD displays the stored fault information to the user. When any fault condition occurs, the relay displays the latest
fault information on LCD.
General Alarms are user defined text messages displayed on the LCD when mapped to binary inputs. Up to four
general alarms can be programmed, each triggered from one or more input. Each general alarm will also
generate an event.
The backlight TURNS ON automatically if the 7SR45 Argus Relay is powered on with phase CT input and the
current is more than 0.4xI
current less than the defined limits, the backlight does not TURN ON.
If the 7SR45 Argus Relay is powered on by inserting a USB cable, the backlight TURNS ON
The backlight can be turned off manually by pressing the backlight key. The backlight TURNS OFF automatically
to save energy if the user does not perform any activity in the HMI for more than 30 seconds.
In the phase CT power mode, the 7SR45 Argus Relay periodically monitors that sufficient current is available to
TURN ON the backlight.
In the USB or battery power mode, if the backlight is already TURNED ON and if the phase CT input is provided,
the backlight TURNS OFF due to the switching of power mode from USB or Battery to CT power. The backlight
can be TURNED ON again if sufficient current is available.
For more information about power source, refer to
©2018 Siemens Protection Devices Limited
Figure 2-7
(single phase) or 0.14xI
n n
Modes of
Chapter 1 - 7SR45 Description of Operation
Warning Symbols
(three phase). If the 7SR45 Argus Relay is energized with
Operation.
automatically.
Chapter 1 Page 18 of 48