Brooks Firetracker FT420, Техническое руководство

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Technical Manual
FT420
– Iss 2.4
66
Table 42 Configurable Alertcom Tones
Tone No. Tone Type Tone Frequency
1 Sweeping Tone
500Hz to 1200Hz for 3.75S, 250mS off.
(Evacuation Signal)
2 Intermittent Tone 420Hz 625mS on, 625mS off.(Alert Signal)
3 Alternating Tone 420Hz 500mS and 870Hz 500mS
4 Continuous Tone 420Hz
5 User defined
6 User defined
7 User defined
8 User defined
4.3.6 Gaseous Control
This option enables FT420 to provide two smoke detection zones for hazardous areas, as well as the
associated supervised and dry-contact outputs required for a complete Gaseous Extinguishing
System. When this option is selected, both Zone 1 and Zone 2 will be dedicated for the smoke
detection in the risk area.
The two zones and their allocated outputs will be separated from the rest of system operations i.e. the
alarm conditions of the two zones will not activate system alarm conditions. Meanwhile the outputs
selected by both Zone 1 and Zone 2 will not be activated by any other zone inputs.
4.3.7 Mains Failure Detection
A new option is added to V2.3.2 to delay mains fail fault for approximately one hour. AS7240 requires
any fault to be detected within 100 seconds, this is the default setting. When the FT420 is installed in a
remote location or in an installation where blackout occurs for longer period of time, the 60 minutes
delayed mains fail detection can be selected.
4.4 Zone Configuration
Zone Controls and Indicators on the Main Display board are always mapped to the 4-Zone inputs on
the Main Control Board. The Expansion Zone Controls and Indicators can be allocated to different
Expansion Zone input circuits.
Some Expansion Zones may not have a related zone indication e.g. when they used as a trigger input
in Alertcom applications.
Each zone is capable of activating any of the following control outputs in its alarm conditions.
•
Common conditions.
•
Common conditional relays.
•
ACF, external strobe, MDH and warning outputs.
•
Expansion Supervised Outputs.
•
Expansion Dry-Contact Relay outputs.
The CIE supports a number of features for each zone input circuit and is described in the following
sections.