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INERTIA-2464
Technical & Programming Manual
Copyright (c) 1996,
INERTIA FIRE SYSTEMS
TECHNICAL DESCRIPTION
GENERAL
The 2464 in its most basic form comprise of two boards, the main control board and the main termination
board.
The main control board contains the Microprocessor, EPROM, RAM and E
2
ROM. The main control board also
has the liquid crystal display and keypad attached. All of the "delicate" electronics have been placed on this
board. The main control board complete with the inner door is easily removed during installation to avoid
damage and allow greater access to the field terminals.
The main termination board contains the two power supplies (5V and 27V), the first eight zones, all common
outputs and the printer interface. All charger settings, fuses etc are located on this board.
Up to seven (7) zone expansion boards can be added to the system to increase its detection capability. These
boards contain the same electronics as on the main termination board for zone scanning. Addressing is by a
jumper that selects which group of eight zones the board refers to.
Up to seven (7) zone indicator boards can also be added. These boards will displays the status of the zone
expansion boards fitted.
Up to eight (8) relay boards can be added. These boards contain 8 change-over relay contacts, each rated at 1
amp. Open collector output boards can also be used in lieu of relay outputs boards. These boards require no
addressing they work on a serial data chain. Output 1 is the closest output to the main board up to output 64.
NOTE This product utilises state of the art components and materials and therefore boards must be returned
to our factory for proper troubleshooting, repair and retesting. Field component level repairs are not
recommended and would void all warranties on the product.
TRANSIENT SUPPRESSION
The INERTIA-2464's superior transient protection comprises of Dual Transorb input traps, treacherous paths
on incoming PCB tracks, balanced circuit boards and metal oxide varistors on outputs. These devices are all
self-resetting.
CURRENT CONSUMPTION
Zones Fitted Quiescent Current Quiescent + 2 AZF'S in alarm +1A of Bell +1 Amp ACF
8 150 mA 2.23 AMPS
16 250 mA 2.33 AMPS
24 350 mA 2.43 AMPS
32 450 mA 2.53 AMPS
40 550 mA 2.63 AMPS
48 650 mA 2.73 AMPS
56 750 mA 2.83 AMPS
64 850 mA 2.93 AMPS
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