22
BRAVE Steel
–
User and service manual
2.2 Connection
The basic function (connection and disconnection of a call) only
requires a
phone line
connection - LINE
(9)
on Pic 1. The line is connected
with 2 conductors (a,b) and has a generally voltage of 24V - 60V, short circuit
20mA - 60mA. During connection the line voltage is 7V - 10V.
Line connection
-
The Brave Steel broadcasts a sound (Reset) ♫
(chapter 3.1 page 27) if it has previously been disconnected from the line for
any length of time. Brave Steel is an analogue door entry system designed for
connection to an analogue phone line. The polarity of the phone line is
unimportant. Brave Steel works according to the setting of technical
parameters (chapter 6).
Parallel connection
- is not recommended, as parallel connection with
another door entry system or phone line only causes technical problems. Also
it is not possible to use different devices for a line switch over (intelligent
adaptor plugs etc.)
For; the motherboard heating, name tag back lighting, powering up the
current loop of the exit button and for relay controls it is necessary to connect a
12V power supply (6) Pic. 1. A 12V power supply can be unidirectional or
alternate, although the polarity is unimportant, max. off-take from 12V is
250mA. It is possible to use the power supply to power up an electronic lock,
but it is then recommended that a12V/1A supply is used. When connecting to
an existing system, i.e. to an attendance system or sliding gates, you can also
use the systems power supply or a unidirectional 24V power supply, NOT
alternate, polarity is unimportant.
Relays
(7)
(Pic.1) have many different uses, and ether connection
examples are showed on Pic.4. You will need to connect a 12V power supply
for the system to function correctly. The door entry system is designed so that
all parts are galvanically separated. The telephone line is separated from the
power supply and the relay contacts are also separated galvanically from the
other door entry system parts. This prevents problems with lead-ins and
interactions.
Under no circumstances use 120V or 230V direct current (DC)!
This can be solved by the use of contactors (power relays) as per Pic.4. (6)
