BUS COUPLER WITH TRANSFORMER
Ref. 1072/24
PERFORMANCE
• Powers the two-wire bus on main push-button
panel side: up to 12 stations + 1 switchboard.
• The bus on door phone side is called the "column"
and is split into two spines. The two spines are
reciprocally equivalent and can be separately cut
off in the case of a failure. This event is indicated
by the two LEDs corresponding to the spines.
• Powers the column (two spines and two wires):
max. 50 door phones + 1 secondary push-button
panel. Up to 30 door phones + 1 secondary push-
button panel can be connected if open door LED
feature is provided. In this case, an additional
coupler cannot be used to increase the number of
door phones in the column if this is connected to
a secondary call station.
• Repeats the data between the two buses.
• Provides bus line impedance on main push-
button panel side and door phone side to allow
audio modulation.
• Provides the current needed to generate the door
phone call and the floor call.
• Couples the voice of the two buses.
• Powers electrical door lock and name tag lights.
• Equipped with low voltage relay for controlling
"staircase lights".
• Equipped with VOP video power unit controller
(1074/20).
DESCRIPTION OF TERMINALS, CONFIGURATIONS
AND DISPLAYS
B1:
Spine 1 working LED.
B2:
Spine 1 working LED.
M/S:
Master/Slave
connector
L1, L2:
Connection to bus on main push-button
panel side
B1A, B1B: Connection to column spine 1
B2A, B2B: Connection to column spine 2
0, ~230:
Mains.
~0, ~12:
Can power the following alternatively:
• 1 calling module 1072/12;
• 1 concierge switchboard 1072/41;
• 1 electrical door lock (see technical
specifications);
• bulb or name tag lighting LED (see
technical specifications).
C, NA, NC: "Staircase lights" relay exchange.
CM, GND: 1074/20 controller.
DS1072-021B
configuration
plug
TECHNICAL SPECIFICATIONS
Power supply: 230 Vac ± 10% 50Hz
Power:
37 VA
L1, L2:
22 Vdc 120 mA
B1A, B1B:
22 Vdc 60 mA
B2A, B2B:
22 Vdc 60 mA
~0, ~12:
12 Vac 1.1 A
Relay contacts: 24 Vdc 1.2 A - 24 Vac 1.2 A
Protections:
PTC
Temperature:
-5°C +40°C
Dimensions WxHxD 216x90x75 mm
(12 modules on DIN EN 43870 bar)
Disconnect the mains power for at least 60
(1)
seconds to reset the power unit if the PTC trips
due to overload or short-circuit.
INSTALLATION AND CONFIGURATION
Install the coupler in a dry place. Keep slots open
to prevent overheating the device. Do not install the
coupler near devices generating strong magnetic
fields.
The device can be fitted on a DIN EN 43870 bar (12
modules).
The coupler is configured as a slave by default.
Insert the specific plug provided to configure the
coupler as a master. Only one coupler can be
configured as a master in each system. All other
coupling devices must be configured as a slave.
Each coupler can be connected to up to 50 door
phones (including door phones in parallel) in two
spines.
"Master " configuration
(1)
"Slave" configuration
27