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MP120
1 – MP120 SYSTEM
1.1 GENERAL DESCRIPTION
1.1.1 SYSTEM ARCHITECTURE
The MP120 system is an antitheft and safety alarm wire system suitable for individual users both in the residential,
industrial or service industry fields. The inputs can be configured as unbalanced (N.C.), single-balancing and dual-
balancing inputs.
The control unit, inserters, keypads and input/output expansions are connected with one another through a bus. The
detectors, sirens and other signalling devices are, on the contrary, connected to the inputs and outputs available in the
control unit and the other aforesaid devices. Using the bus makes cabling much easier and allows you to save money,
since not all the connections need be terminated directly to the control unit. For instance, if you wish to ensure the
antitheft feature as well as local actuation for an annexe (e.g. garage, warehouse, shot), you will just need to run the bus
cable to the annexed building, and the bus cable shall be connected to an inserter (or keypad) and an expansion to
which the alarm detectors will be linked.
The MP120 system may, if equipped with a communicator, send telephone, voice alarm messages with numeric
protocol (to remote surveillance agencies); moreover, it may also be controlled remotely through the telephone (incl.
mobile phones) and make use of remote assistance. The system is programmed through any of its keypads, and also be
connecting the control unit to a PC equipped with the Fast Link software, after the control unit has been equipped with
the interface with the RS232 port.
1.1.2 BUS
This is the connecting line that transmits, through four wires only, both the information and the 12 V- power supply
between the control unit, keypads, inserters and expansions (as far as expansions are concerned, the 12 V- power
supply, required to power the detectors connected to the expansions themselves, shall be provided separately).
This arrangement makes cabling much easier, since it allows you to use different types while reducing the number
of cables required for connections. Below are the types that can be used.
PERIPHERAL UNIT CONNECTION
The 4-lead bus cable (2 leads for the data, 2 leads for the 12 V- power supply) is enough only for the keypads and
inserters. As regards expansions, if they are not powered locally, two more leads for AUX 12 V- power supply shall
be run from the control unit +/- S terminals (in this case, take care that total absorption will not exceed the current
that can be delivered by the control unit power pack).
CASCADE
COMBINED
WYE
