BRAVE
– user guide
15
2.2 Connection
The basic functionality of intercom (voice communication) needs
connection of
telephone line
only - LINE
(8)
on .Pict. 1 Brave Slim. The line is
connected by 2 wires (a,b) and in stand by has usually voltage 24V - 60V, short
circuit current 20mA - 60mA. When line is OFF HOOK the line voltage is 7V -
10V.
Line connection
Brave Slim intercom announce by sound signal
(Reset) ♫ (capture 3.1 page.21) when is disconnected from line certain time.
Brave Slim is analog intercom designed for connection to analog line( PSTN line
or PBX analog extension) it means line where works ordinary analog phone. It
works regardless to line polarity and in range mentioned in technical parametres
(capture 6).
Paralel connection
– we not recommend! Paralell connection with
other analog phone or other door intercom is not recommended! We also not
recommend use special devices switching the line ( inteligent couplers,
adapters, etc..).
When model of Brave Slim is with
camera /C
then on screw
CAM
(11)
on Pict. 1. connect cable for video transmission. Up to 25m you can use one
free pair of UTP cable. For longer distances you have to use coax cable Pict. 1.
Camera mode you setup by DIP switch (capture 1.5) and camera is either
activated automatically (when intercom is active) or is permanently ON (DIP 7).
Camera lighting up by infra LED is either active with camera (DIP 5) or you can
permanently switch OFF. Due DIP 8 you can paralelly connect to video output
impedance 75ohm
12V power supply
(12)
on Pict. 1 must be connected for mother board
heating, cards backlighting, camera powering inludes infra LEDs and for relays
control. The power supply might be AC and also DC, not depends on polarity.
From 12V is max consumption 250mA. Power supply might be used also for
electrical lock powering. Then we recommend power supply 12V/1A. You can
also use 24V DC power supply. It is useful mainly at installations where power
supply is already installed and it is used for sliding doors, RFID, etc..
You can use only 24DC power supply not AC!!! Not depends on polarity.
Relays
(10)
on Pict. 1 have many possibilities in practise usage. The
examples (drawings) are mentioned on Pict. 2. 12V power supply must be
connected for correct operation. The intercom unit has galvanically isolated all
important parts. Telephone line is isolated from power supply and relays
contacts are also galvanically isolated from other intercom electronic parts.
In any case must not be activated directly main voltage 120V or
230V !!!
When you need control main devices please use contactors ( power
relays) as it is on Pict. 2 example (6) .
