Siemens 7SR157 Argus, Manual

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7SR157 Technical Manual
Chapter 1 - Page 14 of 38 © 2022 Siemens Protection Devices Limited
LCD Indication
General Alarms are user defined text messages displayed on the LCD when mapped to binary or virtual inputs.
Up to six general alarms of 16 characters can be programmed, each triggered from one or more input. Each
general alarm will also generate an event.
If multiple alarms are activated simultaneously the messages are displayed on a separate page
in a rolling display on the LCD. The System Config>
General Alarm Alert setting Enabled/Disabled allows the
user to select if the alarms are to be displayed on the LCD when active.
All general alarms raised when a fault trigger is generated will be logged into the Fault Data record.
Standard Keys
The relay is supplied as standard with five pushbuttons. The buttons are used to navigate the menu structure and
control relay functions. They are labelled:
▲ Increases a setting or moves up menu.
▼ Decreases a setting or moves down menu.
TEST/RESET ► Moves right, can be used to reset selected functionality and for LED test (at
relay identifier screen).
ENTER Used to initiate and accept settings changes.
CANCEL Used to cancel settings changes and/or move up the menu structure by one
level per press.
NOTE: All settings and configuration of LEDs, BI and BO can be accessed and set by the user using these keys.
Alternatively configuration/settings files can be loaded into the relay using ‘Reydisp’. When the System
Config>
Setting Dependencies is ENABLED, only the functions that are enabled will appear in the menu
structure.
‘PROT. HEALTHY’ LED
This green LED is steadily illuminated to indicate that DC voltage has been applied to the relay power supply and
that the relay is operating correctly. If the internal relay watchdog detects an internal fault then this LED will
continuously flash.
Indication LEDs
Relays have 9 user programmable LED indicators. Each LED can be programmed to be illuminated as green,
yellow or red. Where an LED is programmed to be lit both red and green it will illuminate yellow. The same LED
can be assigned two different colours dependent upon whether a Start/Pickup or Operate condition exists. LED’s
can be assigned to the pick-up condition and colour selected in the OUTPUT CONFIG>LED CONFIG menu.
Functions are assigned to the LEDs in the OUTPUT CONFIG>OUTPUT MATRIX menu.
Each LED can be labelled by withdrawing the relay and inserting a label strip into the pocket behind the front
fascia. A ‘template’ is available in the Reydisp software tool to allow users to create and print customised legends.
Each LED can be user programmed as hand or self–resetting. Hand reset LEDs can be reset by either pressing
the TEST/RESET
► button, energising a suitably programmed binary input, or, by sending an appropriate
command over the data communications channel(s).
The status of hand reset LEDs is maintained by a back up storage capacitor in the event of an interruption to the
d.c. supply voltage.