Addressable Gas Detection System Manual
Addressable System Manual
19
Issue 2, January 2015
3.2)
System states and operation
The LCD display provides the user with details about the various system states.
A few general rules apply at any level as follows:
- Should there be a list displayed, the page scrolling can be done using the
UP/DOWN arrow keys. Once a selection is made by pressing the ENTER key
the display will show a more detailed view of that particular selection.
- All the arrow keys, UP/DOWN, LEFT/RIGHT are being used also to move
through the parameter under change fields.
- At any display level, the ESC key will switch back to the previous view.
Pressing twice the ESC key, you will go back to the main screen.
- The same, at any display level, should no keys be pressed for more that 3
minutes, the view will automatically switch back to the main window of the
Normal mode.
3.2.1)
System states
The system is designed to be in one of the following operative states:
NORMAL
ALARM
FAULT
TEST/MAINTENANCE
UNSET
EMERGENCY
NORMAL
This is the system state when everything works properly and there is no Alarm and
no Fault notification. Under this condition it is possible to visualise the current status
of the inputs.
On the LCD display, in the main frame, up to 8 channels information is shown, with
the actual gas concentration measured, as configured in the related channel.
Fig. 3.2.1 a) Typical NORMAL state screen.
