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BKS 24-1B communication and control device is used for control and checks of fire dampers with
the BF 24-TN-ST (BFL 24-T-ST, BFN 24-T-ST) actuating mechanism in conjunction with the BKN
230-24 supply and communication device. BKS 24-1B receives information about the situation of
the fire damper through the BKN 230-24 supply and communication device and issues controlling
commands. The device is intended for building in into the distribution board. Light diodes on the
front side of the device signalise the operating situations of the damper and breakdowns of the
whole system. Potentialless auxiliary contacts enable connection to the master control system
(signaling of the damper position, failure reports, release of the ventilators etc.).
While a flashing green LED pilot light signalises damper blade motion towards the given position,
the same pilot light reports reaching the required position when shining constantly. If the flap
blade, with respect to the given time, does not reach the required position, then a red LED pilot
light starts to flash and at the same time, the failure contact is active. Once the damper blade
reaches the given position, this contact is deactivated. The LED pilot light keeps flashing unless
the failure is unblocked by means of the RESET button. Except for reporting failures, other three
auxiliary contacts are available. Contacts showing operating and failure position of the damper
are active when the damper is in the given position. Function check can be done by pressing and
holding the button "RESET/TEST" for longer time. While holding the button, the damper blade
moves in the direction of the failure position. Fault function is indicated by the LED pilot light.
BKS 24-1B can be connected by means of ZSO-11 11 pole connector for DIN 35 mm panel.
~
2-conductor wiring
conection can
be interchanged
to BKN230-24
Notice: Relay contacts are drawn
without power
light diodes
contacts
state
open
closed
alarm
6
closed
closed
closed
open
open
open
6
closed
closed
6
flashing
6
closed
closed
open
6
closed
flashing
closed
closed
open
closed
6
closed
closed
6
flashing
open
closed
closed
6
Connection through
an insulation
transformer
2
10
Control
switched
on /off
1
Reset
Test
5
External buton
optional
a
9
b
11
3
not available
, starting with switching AC 24 on or pressing
3
«Reset/Test» button
possible cause: • short circuit or interruption of 2-conductor wiring
or damper failure (at BKN..) • Power supply AC 230V missing • defective
3
thermoelectrical starting • smoke detector activated • exceeded operation time
• damper blocked
3
done
4
Damper (drive) turning into
Damper (drive) in
4
Damper (drive) turning into
7
Damper (drive) in
7
17
AC
24V
6
damper position
4
breakdown
3
failure
damper position
7
operation
8
open
Reset
closed
Test
alarm
Description
Cause/Course
• Fault in system signalled, system check should be
of breakdown position
of operating position
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