bkn230_24

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Monitoring of motorized fireand smoke dampers in combi-nation with the Communicationand Control Units BKS24-1Bor BKS24-9A

Mode of operation

The BKN230-24 also functions as a dis-tribution power unit for supplying theBF..24..-ST, BLF24(-T)-ST spring-returnactuators that is connected to it. Another of its functions is to signal theNORMAL and SAFE positions of the dam-per (from the switches in the spring-returnactuators) to the central control panel overa 2-wire conductor. The same conductoris used for transmitting the ON/OFF con-trol command from the control panel tothe damper actuator via the BKN230-24.

Installation and connections

To simplify installation and connection,the spring-return actuator is fitted withconnectors which plug directly into theBKN230-24 unit.The 2-wire conductor is connected to theterminals 6 and 7. The terminals 1 and 2are for the direct connection of thermaltrips or smoke detectors.

Functional testingIf it is proposed to test the actuator with-out the BKS24... unit connected, it can beswitched to NORMAL mode by fitting a

jumper between terminals 3 and 4.The green LED in the BKN230-24 unit isbright when power (AC 24 V) is availableat the actuator.The SAFE damper position can bechecked either by pressing the push-button on the BAE72-S unit or by inter-rupting the power supply.

Product features

Plug-in connections.

Power supply to damper actuators viaplug-in contact (AC 24 V from safety iso-lating transformer).

Schematic diagrams see over.

Communication and Power Supply Unit BKN230-24

Dimensions

BKN230-241

2

3

4

5

67

a

b

1)

1) Jumper factory-fitted. Can be removed if necessary to be replaced by a thermoelectric trip.

(The safety function will be triggered if terminals 1 and 2 are not linked).

2) Jumper only used for commissioning purposes and without BKS24-... !

2)

M

Power supply AC 230 V

2-wire conductorto BKS24-...

BAE72-S

BLF24-ST, BLF24-T-STBF(G)24-T-ST, BF..24-ST

Wiring diagram

Connection• Power supply Cable 0.9 m with Euro-plug type 26• Actuator Plug 6 poles, plug 3 poles• Screw terminals for wire 2 × 1.5 mm2

Power consumption 3.5 W (NORMAL position)

For wire sizing 11 VA (incl. spring-return actuator)

Nominal voltage AC 230 V 50/60 Hz

Nominal voltage range AC 198…264 V

Technical data BKN230-24

Maintenance maintenance free

Ambient temperature range – 20... + 50 °CNon-operating temperature – 40...+ 80 °CHumidity test to EN 60335-1

EMC CE according to 89/336/EEC, 92/31/EEC, 93/68/EECLow Voltage Directive CE according to 73/23/EEC

Protection class II (all insulated)

Weight 550 g

p 0 0 3 8 2 1 0

w 0 5 7 4 2 1 0

4 .

5

130

140

153

4 5

4 3

8 8

5

5 4

d 0 0 2 5 7 0 7

B C

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Connection and indication/Schematic diagrams (Examples)

2-wire conductore.g. 2 x ø 0,6 mmdia.

Control panel

A C 2 3 0 V

P / N / E

BKN230-24

3 4 51 2 6 7

M

Spring-return actuator (24 V)

a b

Fire damper

C

o n t r o l

O

N / O F F

R E S E T

T E S T

T ~ AC 24 V

AC 24 V

BKS24-1B

6438

F A U L T

D a m p e r p o s i t i o n

N O R M A L

11 9 15 10 2

7

D a m p e r p o s i t i o n

S A F E

BAE72-S




A C 2

3 0 V

P

/ N /

E

F a u l t

c o n t a

c t K 1

A u x i l i a r y

c o n t a

c t K 2

~

AC 24 V

BKN230-24

3 4 51 2 6 7

M


BKN230-24

3 4 51 2 6 7

a b

a b

P r o g r

a m m i n g

i n p u t

C o n t r o l

O N / O F F

Fire damper 3

Fire damper 1

M

Control panel

BAE72-S

BAE72-S

BKS24-9A

18171615

1 2 3 4 5 6 7 8 9 10

14131211

~ AC 24 V

a1............................................a9 b1...b9Input (dampers 1 and 3) (Common input)

PROG

TEST

1

2

3

4

5

6

7

8

9

FAULT (dampers 1 and 3)

➀ Connection: power supply AC 230 V

➁ Plug-in contacts for Belimo actuator 24 V

➂ Screw terminals, 7 poles

➃ Cable inputs for Belimo actuator

➄ Cable input for 2-wire conductor

➅ Transparent protection cover

➆ LED-indication, green (AC 24 V motor)

b 0 1 0 7 2 1 0

w 0 5 7 6 8 0 8

w 0 5 7 8 2 1 0

➀

➆

➄

➃

➂

➁

➁

➃

➅

E N G - 9 3 0 0 1 - 9 3 3 3 3 - 1 0

. 0 2 - 5 0 0 • P r i n t e d i n S w i t z e r l a n d • Z S D

• S u b j e c

t t o t e c h n i c a l c h a n g e s

B C

bkn230_24

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