7SR45 Description of Operation
© 2017 Siemens Protection Devices Limited Chapter 1 Page 24 of 34
3.8 General Alarm
General Alarms are user defined text messages displayed on the LCD when binary inputs are mapped and
triggered.
Up to 2 general alarms of 16 characters can be configured, each triggered from one or more input. Each general
alarm generates an event.
If multiple alarms are activated simultaneously, the last alarm messages will be displayed on the LCD.
All the fault trigger generated by general alarms are logged into the fault data record.
Table 3-8 General Alarm
Parameters Description Range
Default
Value
Min Max Step Change
General
Alarm-1
General Alarm-1
16 char (0-9,
A-Z, +, -, /,
SPACE)
Alarm1 - - -
General
Alarm-n
General Alarm-n
16 char (0-9,
A-Z, +, -, /,
SPACE)
Alarm-n - - -
3.9 Reset LEDs Outputs
Depending upon any binary output configuration set by the user to operate the protection function, if the
protection functions detect any fault, binary output and LEDs operates and latched.
7SR45 self powered overcurrent and earth fault relay allows the user to reset binary outputs, LEDs, timers, and
protection functions by using the RESET flag functionality.
The user can reset binary output/LEDs in anyone of the following methods:
• TEST/RESET► key
• Binary Input
• Reydisp Software
After successful reset of binary output and LEDs, the "FLAGS RESET" message appears on LCD and all the
LEDs glow and reset.
In CT power mode, LEDs test can be performed if the current is more than 0.4In (single phase) or 0.14In (three
phase).
If the fault current persists, pop-up message appears on LCD “FAULT PERSISTS”.
3.9.1 Binary Input
In the INPUT MATRIX configuration, LEDs and outputs can be reset by configuring the binary input. The
configuration can be executed with ReyDisp Evolution or HMI.
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