urmet domus 826 DIGITAL CALL SYSTEM, Manual

Page: 62 / 118

826
FOUR-PORT DECODER Ref. 826/23
PRELIMINARY SETTINGS
The four-port decoder is set up at the factory for connection to
electronic call tone signaling apartment station equipment.
If conventional buzzer type apartment station equipment is to be used,
the selector switch must be moved as shown below at the time of
installation, and before the four-port decoder is supplied with power.
NOTE:
All apartment station equipment in a system must be of the
same type (i.e., either all electronic call tone signaling or all
conventional buzzer type).
The four-port decoder consists of the following:
•
Base and shock-resistant white plastic cover (10).
•
Electronic circuit board with removable input terminal block (4),
output terminal block (3) and apartment station connection terminal
block (9), electronic ringer/buzzer selector switch (6), programming
pushbutton (8), LED (7) and jack (5), and decoder data and code
label (2).
•
Shock-resistant plastic cover (1).
•
Overall dimensions: I 123 x h 100 x d 38 mm.
SPECIFICATIONS
Operating voltage: 24 V DC ± 10%
Stand-by current draw: 14 mA
Current draw with buzzer active: 350 mA
Current draw with electronic ringer active: 160 mA
Current draw with voice signal active: 14 mA
Service temperature range: -10°C to 45 °C
INSTALLATION
Four-port decoders Ref. 826/23 must be installed as shown below.
The four-port decoder must be connected:
•
To the system riser cable on one side, and
•
To the apartment stations (4 max.) on the other side.
When making four-port decoder connections to apartment stations, the
following rules must be observed:
•
Use cable with a cross-section over 0.50 mm 2 .
•
NEVER connect several conductors in parallel in order to reach
the required cross-section (e.g., multi-core telephone cable). A
single, and preferably stranded-core, conductor of appropriate cross-
section must be used.
•
Branch lines from decoder units to doorphones must not exceed 20
meters in length
•
The six connected wires must be routed at a suitable distance from
power lines (over 30 cm, where possible).
All terminal blocks are removable to facilitate maintenance operations
and are provided with fi ns to separate conductors. Terminal blocks
are removed upwards. If necessary, a screwdriver may be used as
shown.
WARNING: Removing the protective plastic cover from the
electronic circuit board will automatically void product warranty.
FOUR-PORT DECODER Ref. 826/23
PRELIMINARY SETTINGS - SPECIFICATIONS
FOUR-PORT DECODER
Ref.
826
/2
3
DECODER
S
FOR DOORP
H
O
N
E
AN
D/OR
V
IDEO DOORP
H
O
N
E
A
P
A
RT
M
E
N
T
S
T
A
T
IO
NS
123 mm
100 mm
38 mm
R E R E
SELECTOR SWITCH
POSITION FOR ELECTRONIC
APARTMENT
STATION EQUIPMEN
(ELECTRONIC RINGER)
SELECTOR SWITCH POSITION
FOR CONVENTIONAL
APARTMENT
STATION EQUIPMENT
(BUZZER)
1
2
5
6
7
8
9
10
3
4
WIRES
COVER
CHASSIS
WALL WALL
CIRCUIT
CIRCUIT
COVER
CHASSIS
C
WIRES
C
WIRES
1
- 54
MT124-019