DSE Model 5220 Automatic Mains Failure & Instrumentation System Operators Manual
10 057-012 5220 OPERATING MANUAL ISSUE 5.1 18/06/2007 AM
4 PROTECTIONS
The module will indicate that an alarm has occurred in several ways;
The LCD display will indicate a ‘common alarm’ either :
(warning), (shutdown) or
(electrical trip)
If appropriate, the LCD display or LED indicators will display the
appropriate alarm icon i.e. for battery charging failure :
NOTE:- Alarm icons in the LED display area are ‘hid until lit’. This means that the display area
appears totally clear, and ‘free from clutter’. The advantage of this is that when an alarm does occur,
the respective LED icon will illuminate on the otherwise blank fascia. This makes alarm identification
much clearer.
If no alarms are present the LCD
will extinguish any alarm icons.
In the event of a warning alarm the LCD will display the appropriate icon. If a shutdown then occurs the module
will display the appropriate icon. The original warning alarm icon will remain displayed.
Example:-
Low battery volts warning (all symbols steady)
Followed by….
Low battery volts warning indicator still
present, common alarm indicator has
changed to a shutdown symbol and is
now flashing.
Also present is the flashing underspeed
LED.
Underspeed and Shutdown alarm Icons are displayed flashing. The original warning will remain displayed as long
at the triggering conditions remain. Any subsequent warnings or shutdowns that occur will be displayed steady,
therefore only the first-up shutdown will appear flashing.
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