19/32
MP120
Warning!
Always close unused inputs: to the positive, if they are of the N.C. type, with a balancing resistor
(22 k
Ω
) if they are of the balancing type.
The specific input task (break-in, robbery, panic, technological, fire) will be subsequently specified through
programming.
Output connection
The control unit outputs can be reached by connecting alarm devices (sirens and blinkers), signalling devices
(LEDs or buzzers) as well as other devices made to operate automatically when a detector is actuated.
To connect the outputs, proceed as follows:
1. Connect the alarm devices (e.g. siren) to output U1 (potential-free relay, max. 1A - 24V) (such output cannot be
programmed freely):
Event
Actuated system
Deactivated system
Break-in
■
Tampering
■
If
programmed
Panic
■
■
Fire
If programmed
If programmed
The relay rest status may be programmed as normally open (N.O.) or normally closed (N.C.).
2. Connect, if you wish so, other devices to programmable outputs U2, U3, U4 and U5, considering that:
•
output U2 (max. 100 mA) is preset as a tampering output;
•
outputs U3, U4 and U5 ensure a maximum current of 10 mA.
The output specialization (break-in, tampering, robbery, panic, technological, etc.) will be subsequently indicated
through programming.
Bus connection
Connect the bus 4-lead cable (which will make the control unit, inserters, keypads and any I/O expansions to
communicate) to the – SER, + SER, CK and D terminals.
Telephone line connection (optional)
In the event that the control unit is equipped with a PSTN telephone interface, connect the control unit to the
telephone line according to the diagram below:
The control unit shall be the first device connected to the incoming telephone line: any other device (fax, answering
machine, telephones) shall be downstream the control unit. This type of connection ensures that the control unit will
also be able to engage the telephone line in case of need, thus leaving out all the other connected devices.
Handle the duplex cable with care, since the telephone control unit supply voltage may be live! When connecting
the duplex cable to the interface terminals LA and LB, you need not allow for polarity.
The telephone interface is equipped with a protection suitable for standard needs, as laid down by the law
regulations. In the event that you operate in a place with a great risk of electric discharge on the telephone line, an
auxiliary protection (not supplied with the unit) may be optionally installed on the telephone line, upstream the
control unit.
DECLINATORY CLAUSE
Elkron S.p.A. decline all responsibility for non-availability, either temporary or permanent, of the PSTN
telephone line, which may affect making calls and sending programmed messages.
PSTN telephone line
+ answering machine, fax, etc.
auxiliary
protection
