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9
Peripheral devices
Alarm points, analogue alarm points (detectors, MCP's, etc.) are connected directly to a
COM loop. Conventional alarm points (detectors, MCP's, etc.) are connected to a zone
line input in an 8 zones expansion board 4580 or in a COM loop unit e.g. 3361 zone line
input. Programmable inputs can also be used for flow switch inputs, etc.
Short circuit isolators must be used on the COM loops if more than 40 alarm points are
connected to a COM loop.
I/O Matrix boards are plugged "piggy back" to an Application board (Zone, Fan, Generic,
etc.), which is connected to a COM loop, refer to chapter Expansion boards 458x", page
24.
Sounders, strobes, door holders, etc. are connected to COM loop output units e.g. 3361 /
3364 and/or to Control Unit outputs (S0-S3, R0-R1) and/or 8 relays expansion board (4581)
outputs. Addressable sounders (4477 / 3379) are connected directly to a COM loop.
Input devices e.g. timers, external faults, etc. are connected to programmable inputs i.e. to
COM loop unit (e.g. 3361) inputs and/or to the Control Unit inputs (I0-I3).
Routing equipment is normally connected to the Control Unit outputs "Fire alarm" (for Fire
brigade TX) and "Fault condition" (for Fault TX). Also, any programmable output can be
used.
Remote Display Units are connected directly to the RS485 channel.
For more information, see the following Sections and the Product Leaflets on our web site:
http://www.brooks.com.au
9.1
COM loop units
Each COM loop (0-3) supports up to 255 addressable COM loop units
1020 COM loop units. The total current consumption will vary depending on the type and
number of units, which will affect the cable length. See chapters "FT1020G3 cable length",
page 170, "Current consumption", page 174 and drawing F784-01.
Note: The Control Unit is normally factory set for 512 alarm points. However, the
FT1020G3 can be changed on site or in the factory to 1024 alarm point (via EBLWin)
The current configuration is shown in menu H4/U8. The units should be distributed as
evenly as possible on each COM loop and between the COM loops (0, 1, 2 and 3).
45
Conventional detectors can be connected to an 8 zones expansion board 4580 or to the zone line input (Z) on an addressable
I/O unit 3361.
46
This action require a special download password.
Technical/Programming Manual
51
FT1020G3 Rev 2.2.1
45
, i.e. in total up to
46
.
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