27
Outputs
Siren connection examples
The switchboard is equipped with a relay capable of supporting 3A at 24VDC, with potential-free exchange, which is assigned by default to the
control of an alarm sounder. This relay can be used to control a self-powered siren and a standard siren. The exchange is accessible via the
terminals COM (common), NC (exchange closed to common in standby) and NO (exchange open in standby) of terminal block M2.
A positive dedicated to charging the battery of a self-powered unit is available on terminal V+SIR of terminal block M2. This positive is limited by
a 2A resettable fuse.
Connecting a self-powered siren with 3 or 2 wires
With 3-wire connection, the switchboard passes only one block positive through the relay associated to the alarm; the siren power supply is
connected separately to two terminals on the switchboard (V+SIR and V-). In an alarm state, the block positive is removed and the siren sounds,
being able to use its backup battery and the system battery.
With 2-wire connection, the switchboard passes a block positive and recharges through the relay associated to the alarm. The siren negative is
connected to the switchboard V-. In an alarm state, this positive is removed and the siren sounds under its own power.
Compared with 3-wire connection, since the siren and system batteries are separate when the siren sounds, if the residual capacity of the siren
battery is low (partially discharged, defective or old), this does not compromise the switchboard functions: the siren might sound only brie
fl
y, but
none of the switchboard functions (logic operation, GSM communication or communication to PSTN line) will be in
fl
uenced by the siren battery.
Connecting a non-self-powered indoor siren
It is sometimes necessary to connect an additional, non-self-powered, indoor siren as backup for the outdoor siren. Using two-wire connection
for the outdoor self-powered siren simpli
fi
es the wiring, as shown in the circuit diagram below.
Example of connection to outputs TC1 and TC2
Terminal block M2 has two generic outputs, TC1 and TC2. These outputs can be con
fi
gured as open collectors for earth or for positive.
Output con
fi
gured as OC. If the output is con
fi
gured as an open collector (OC), in standby the output will be
fl
uctuating (=no voltage) but in active
status it will close terminal TC to V-.
Output con
fi
gured as TC. If the output is con
fi
gured as a camera (TC), in standby the output will be
fl
uctuating (=no voltage) but in active status
it will close terminal TC to positive.
This type of response is decided by the con
fi
guration of the two jumpers.
For the connection of LEDs or small relays, refer to the diagram below.
OUTPUT TC1
JP5 ON OC
JP5 ON TC
ON
Output connects terminal to earth.
Output assumes value of approximately 13V.
OFF
Output remains
fl
uctuating.
Output remains
fl
uctuating.
OUTPUT TC2
JP4 ON OC
JP4 ON TC
ON
Output connects terminal to earth.
Output assumes value of approximately 13V.
OFF
Output remains
fl
uctuating.
Output remains
fl
uctuating.
3-WIRE CONNECTION
SELF-POWERED CONNECTION AND INDOOR SIREN
2-WIRE CONNECTION
SELF-
POWERED SIREN
SELF-
POWERED SIREN
SELF-
POWERED SIREN
INDOOR
SIREN
EXTERNAL RELAY ON TC2 OC MODE
EXTERNAL LED ON TC1 TC MODE
