Connection - Alphatech A-VarioBell User And Service Manual

2.2 Connection

Basic function (call establishing and hang up) requires connection of
phone line only- LINE (9) on Picture 1. The line is connected by 2 wires (a,b)
and in stand by has voltage 24V - 60V, short circuit current 20mA - 60mA.
When line is OFFHOOK the voltage is 7V - 10V.
Line connection A-VarioBell door phone announce by sound signal
(Reset) ♫ (capture Chyba! Nenalezen zdroj odkazů. pageChyba! Záložka
není definována.) when is disconnected from line certained time. A-VarioBell
is analog door phone designed for connection to analog phone line.It means
line where working standard analog phone. The door phone works regardless
polarity of phone line and in range of values mentioned in technical parameters
(capture 0).
Paralell connection – is not recommended!!! Parallel connection with
other phone or door phone is not recommended due problems during
operation. It is also not recommended used different devices switching the line
( line splitter etc..).
For board heating, name cards lighting, powering of current loop of exit
button and relays control is neccessary connect 12V power supplyj (6) on
Picture 1. The PSU might be AC or DC and not depends on polarity . From 12V
is max. consumption 250mA. Power supply is possible use also for electrical
lock powering then is recommended 12V/1A AC. During installation to already
installed for example access system or sliding doors can occurs opportunity
use already installed PSU and then is possible use 24V DC but , not! AC, not
depends on polarity.
Relays (7) on Picture 1 have many ways of usage and examples of
connection are on picture 5 . for correct operation must be connect 12V. The
door phone is designed with all important parts galvanically isolated. The
phone line is isolated from power supply as same as relays contacts are
isolated from other door phone parts.
You must not switch direct main voltage 120V or 230V in any
case!!! The control electrical appliance you have to use contactorpicture 5
example (6)
A-VarioBell – User and service manual
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