MT4412E Rev.2 15/10/2019 Pagina 27 di 30
This is a particular malfunction status that can occur for the following two reasons:
• Malfunctioning of the Vcc power supply of the gas control unit
• Lack of 230 Vac primary power supply
3.3) Menu
In normal status, the main screen shows the terminal name, the time and the indication
to press the operative keys of vertical movement to visualize the connected detectors.
Press one of the arrow keys to visualize the list of detectors connected to
the gas control panel.
Press the operative button MENU
to visualize the sub-menus and their
description.
The sub-menus available before login are:
LOGIN allows to login with one of the three user levels
LOGOUT allows to logout
ALARM THRESHOLDS allows to view and/or modify sensor alarm thresholds
RELAY DELAY allows to view and/or modify relay activation and de-
activation delay times
EVENT LOG allows viewing of the history of events
SET BACKLIGHT settings of display backlight
SHOW RETRY visualization of failed interrogations on bus RS485
SYSTEM INFO information about the gas control unit (name, FW and HW
versions, etc.)
ACTIVE EVENTS (appears only if there are active events, i.e. Alarms or Faults
that have not been reset)
If the login is as Operator (O), the sub-menus remain the same. If the login is as
maintenance (M) or Engineer (E), the sub-menus are different:
LOGIN allows to login with one of the three user levels
LOGOUT allows to logout
CONNECTED changes detectors’ (and/or relays) status from Disconnected
to Connected
DISCONNECTED changes detectors’ (and/or relays) status from Connected to
Disconnected
TEST seleziona la modalità Test per sensori e relè
END TEST rimette in funzionamento normale dei sensori o relè in Test
ALARM THRESHOLDS allows to view and/or modify sensor alarm thresholds
RELAY DELAY allows to see and/or change the relays’ delay time, activation
time and disable time
EVENT LOG allows viewing of the history of events
SET DATE TIME allows to set date and time
SET SER. LIMIT (*) future option
VIEW EXT. IP (*) future option
SET BACKLIGHT settings of display backlight
SHOW RETRY visualization of failed interrogations on bus RS485
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