BK-4M
Commutator (the device hereafter) is intended for operation in apartment doorphones as commutation
device providing intercom between the doorstation and subscriber handsets.
The is an upgraded version of the with improved user-friendly coding but similar terminals layout.
Commutator pc.
Jumper pc.
Operating instruction pc.
The commutator does not contain voltage above 24VDC.
Do not perform any connections or coding when the power is on!
The device is fixed either with a springing clip to a DIN - rail (35 mm x 1-2 mm) or with screws (not supplied).
Connect and terminals of all devices to terminals of the corresponding circuits either of
the doorstation or the control unit (refer to their operating instructions for details).
Connect handsets to the terminals observing polarity: the handset LN+ should be connected to one of the
terminals of the and the to the or / / of the device (refer to Figure 1).
Before performing connections, numbers of apartments should be programmed in the device. Apartment numbers may
be of the same decade or of different decades.
To encode the first apartment, set 1 to 8 jumpers (supplied) in the zone. The number of apartment must be equal to the
sum of numbers above the jumpers (refer to Figure 1: for example, to encode number 69, set jumpers under numbers 40,
20, 8 and 1).
To encode the next apartment, set jumpers (1 to 2) in the zone if necessary. The number of apartment is equal to the
number in zone a number from according to the table on the PCB.
To encode the next apartment, set jumpers (1 to 2) in the zone if necessary. The number of apartment is equal to the
number in zone a number from according to the table on the PCB.
To encode the last apartment, set jumpers in the zone if necessary. The number of apartment is equal to the number
in zone a number from according to the table on the PCB.
shows how to connect handsets of apartments No , , and to the device. Note that in the picture there
are in the and zones, because in case of adding “ " (when the apartments numbers are ) no
jumper is needed, as shown in the table on the device PCB.
Max. number of connected handsets
Dimensions,
Weight, kg
Ambient temperature range to
Relative humidity of air up to at .
BK-4M VIZIT
BK-4M BK-4
PARTS LIST
BK-4M 1
12
1
SAFETY INSTRUCTIONS
INSTALLATION
LINE, GND, Ek SEL BK-4M
BK-4M LM
BK-4M LN- FA FB FC FD
CODING
FA
FB
FA + 1 to 4
FC
FB + 1 to 4
FD
FC + 1 to 4
Figure 1 69 70 71 75
no jumpers FB FC 1 successive
4
mm 75х135х35
0.2
1°С 40°С
93% 25°С
Commutators and are mutually interchangeable.BK-4M BK-4
SPECIFICATIONS
