Light Emitting Diode (Led); Home Screen; Password Protection - Siemens 7SR45 Argus User Manual

2.1.3 Light Emitting Diode (LED)

2.1.3.1 Indication
7SR45 self powered overcurrent and earth fault relay consists of 9 fixed function LEDs. LED indicates the
parameter status of the relay such as TRIP READY and PICKUP. The pre-defined LED functions are:
LEDs LED Functions
LED 1
PROT. HEALTHY
LED 2
PICKUP ON
LED 3
TRIP
LED 4
IL1 / A
LED 5
IL2 / B
LED 6
IL3 / C
LED 7
IE / E
LED 8
TRIP READY
LED 9
LOW BATTERY
2.1.3.2 Protection Healthy LED
The steady illumination of Protection Healthy LED indicates that required CT current is 0.20xIn (minimum phase
current) in single phase or 0.13xIn (minimum phase current) in three phases.
2.1.3.3 Trip Ready LED
The steady illumination of Trip Ready LED indicates that required CT current is 0.20xIn (minimum phase current)
in single phase or 0.13xIn (minimum phase current) in three phases and the relay is having sufficient energy to
trip through the impulse output.
2.2

Home Screen

After the relay is powered on, the user can access or navigate to other menus from the Home Screen.
The following operations can be performed from the Home Screen:
ENTER
READ UP
READ DOWN
TEST/RESET►
CANCEL+TEST/RESET►
2.3

Password Protection

7SR45 self powered overcurrent and earth fault relay allow the user to set the password via SETTING MODE >
SYSTEM CONFIG > PASSWORD. The length of the password should be 4 characters. Alphanumeric and
3 special characters such as "+", "–", and "/" are allowed.
The user password can be disabled by configuring as NONE.
From the parameter view screen, the user enters the password and presses ENTER for validation. If the entered
password is valid, the next screen appears. If the password is invalid, LCD displays the password retry screen
again.
After the successful login and editing of parameter, password prompt screen does not appear till the login expires.
If the user does not perform any operation for more than 1 minute, the login expires and unsaved settings will be
discarded.
© 2017 Siemens Protection Devices Limited
Color
GREEN
AMBER
RED
RED
RED
RED
RED
GREEN
AMBER
Press ENTER key to navigate to SETTING MODE
Press READ UP key to navigate to MAINTENANCE MODE
Press READ DOWN key to navigate to SETTING MODE
Press TEST/RESET► key to reset flag and LED
Press CANCEL+TEST/RESET► key to navigate to SOFTWARE VERSION
7SR45 Description of Operation
Chapter 1 Page 13 of 34