Section 8
ZGARD CX II Controller
LCD Screen Display Feature
Once the ZGARD CX II controller is powered ON, it will execute a 60 second start-up routine. The text on the
display screen should read:
HOME Screen:
The LCD
is split into two sections separated by a column of “|”. The
left side of the screen
exhibits the status of all of the active channels. The text message OK will be shown during normal operation. For
visualisation, the screen is sequentially updated every 2 seconds.
1 :
1 0 P P M C O
O K
R G :
1 0 0 P P M
C :
| Z O N E # S N S S T A T U S
W :
|
1
5
O K
A :
|
2
1 1
O K
Line1:
Starting with the first active channel, the display reports the gas level and the concentration symbol, ppm
(part per million) as an example. The
OK
status condition is displayed when the current polled sensor is not in an
alarm condition. Following is the
RG
descriptor which identifies the operating range of the current sensor being
polled. The range and the sensor type are sequentially revealed on every update.
Column1-Line 2:
Displays the descriptor
C
, which is the symbol for “Caution”. If one or more sensors breach their
respective caution level, then the sensor numbers will be displayed adjacent to the C descriptor. Should the number
of sensors in a caution condition exceed the physical space provided, then a “+” sign will be displayed at the end of
the line.
Column1-Line 3:
Displays the descriptor
W
, which is the symbol for “Warning”. If one or more sensors breach their
respective warning level, then the sensor numbers will be displayed adjacent to the W descriptor. Should the
number of sensors in a warning co
ndition exceed the physical space provided, then a “+” sign will be displayed at
the end of the line.
Column1-Line 4:
Displays the descriptor
A
, which is the symbol for “Alarm”. If one or more sensors breach their
respective alarm level, then the sensor numbers will be displayed adjacent to the A descriptor. Should the number
of sensors in a alarm condition exceed the physical space provided, then a “+” sign will be displayed at the end of
the line.
FAIL Status:
Line 2 is also utilized by a second function. If any of the sensors fail to operate, then a fault condition
will occur. As the suspect sensor is polled, line 1 will display the text message “FAIL”. During this event the “Fault”
LED will turn ON and the system will go into WARNING for that sensor and any associated zone(s). This line will
now toggle between displaying CAUTION sensors and FAIL sensors. It will toggle at about a 2 second rate. A multi
sensor failure occurrence will continue to fill in the line right of the
F
descriptor. Should the number of sensors
exceed the physical space of the line provided, then a “+” sign will be displayed at the end of the line.
Example:
The display screen shown below is reporting that sensors 2 and 7 in Zone 1 are in a fail condition and
the controller is currently polling sensor 2, exhibiting an INVALID TYPE status.
2 :
3 5 P P M C O
F A I L
R G :
1 0 0 P P M
F : 2 7
| Z O N E # S N S S T A T U S
W :
|
1
5 W A R N
A :
|
2
1 1
O K
8.0
ZGARD CX II
INTELLIGENT GAS MONITORING SYSTEM
INITIALIZI
NG … PLEASE WAIT
