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4.1.6
Normal Status Display
The display shows the day of the week and the time of day, in 24-hour format. It also shows the status of one of the relays, R1 in this
example, and the type and indicated the gas concentration of one of the configured sensors, S01 is a CO sensor indicating 5ppm in this
example.
Notice in Figure 4-4 that the digits 0 1 are underlined; this indicates that the digit keys can be used to jump directly to another sensor's
status. When the first digit is pressed, the display will prompt for the second digit of the target sensor.
In this example, the first digit entered was 1. Since the DVP-120 can handle 12 sensors, the first digit for a sensor number is either 0 or
1. The leading zero must be entered when selecting a sensor less than ten. When the second digit is entered, the normal display will be
restored; showing the type and value of the selected sensor.
As mentioned above, the left and right scroll keys will display the next or previous relay's status. The display will also change the underline
to indicate that the digit keys (zero, one and two) can be used to jump directly to a particular relay. Since only one digit is needed to
select a relay, the system does it immediately rather than prompting to show the relay.
If the sensor is indicating a gas level that is greater than the alarm or warning levels, the gas reading will alternate with the words ALARM
or WARNING as appropriate. If a sensor fails, a connection is lost or the panel itself detects a failure of its own, the panel will enter
TROUBLE mode and the gas reading will be replaced by the word TROUBLE (the TROUBLE status condition is discussed in section
4.1.6 Trouble Status
Display).
4.1.7
ALARM Status Display
When any sensor indicates a gas level that is at or above the configured alarm level for the sensor, the panel will enter ALARM mode,
during which the internal buzzer will sound, the alarm lamp will be red and the LCD will show the sensor type and channel number.
The display will cycle through all sensors that are signaling alarm levels, at five seconds per display. Pressing any key (except HUSH)
will advance the display to the next sensor that is signaling an alarm level.
Do not cover or obstruct audible alarm opening or visual alarm LED. Doing so may adversely affect product performance and result in
serious injury or death.
If an external horn and/or strobe are connected and configured to signal an alarm condition, they will also sound when an alarm condition
occurs, after a delay if that configuration option is used.
M O N
1 0 : 2 3
S 0 1
C O
Figure 4-4 Normal System Display
S h o w
S e n s o r
Figure 4-5 Sensor Prompt
A L A R M
C O
S E N S O R
Figure 4-6 Alarm Display
WARNING
R 1
O F F
5
P P M
_ 1
0 2
20
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