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The default minimum on time is zero and the maximum allowed value is fifteen minutes.
4.3.6
Configure Strobe Submenu
The configuration parameters for the strobe are the same as those for relays. A strobe would not normally require a minimum on time
but this parameter allows a more versatile configuration.
4.3.6.1
Strobe Summary
This display example shows that the strobe has been configured to operate with a turn on delay and no minimum on time.
Notice that the strobe number, 5, is underlined. This indicates that the digit keys can be used to jump to a particular relay, horn or strobe.
The relays are numbers 1, 2 and 3; the horn is number 4 and the strobe is 5.
4.3.6.2
Strobe Turn on Delay
The default turn-on delay is one minute and the maximum allowed value is fifteen minutes.
4.3.6.3
Strobe
The default minimum on time is zero and the maximum allowed value is fifteen minutes.
4.3.7
Configure Zones Submenu
The DVP-120 ventilation control can support up to three zones. The zone functionality makes the DVP-120 very flexible. For example,
each zone can be configured to monitor a separate set of four sensors and control a single relay.
Another control scheme uses one zone to monitor all sensors and turn one relay on at a relatively low gas concentration. A second zone
monitors the same sensors and turns on a second relay if the gas concentration reaches a higher level. The third zone can also monitor
the same relays turning the last relay on as a signaling device to a live monitor station, as well as turning on the external horn and strobe,
under the assumption that the ventilation system is not working.
In addition to controlling the relays based on the gas concentration, each zone can have a timed function, e.g. turn on low volume
ventilation fans at 7:00 AM and turn them off at 8:00 PM.
The default Ventilation Controls are:
S t r o b e 5
D e l a y
O n
Figure 4-37 Strobe Summary
S t r o b e
( m m : s s )
Figure 4-39 Strobe Turn on Delay
S t r o b e
( m m : s s )
Figure 4-39 Strobe Minimum on Time
D e l a y
O n
0 1 : 0 0
M i n . O n
0 0 : 0 0
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