
7
BE(G)24-ST, BE24-12-ST
M
1
2
3
4
5
6
7b
 2-wire conductor
to  BKSE24-6
BKNE230-24
AC 230 V Nothing must be  ssigned 
to termin ls 1 to 5
Displays
LED Stav F nkce
yellow fl shing light d mper moving to OPEN
yellow ste dy light d mper open
green fl shing light d mper moving to CLOSED
green ste dy light d mper closed
yellow fl shing  t double f ult
green frequency
yellow d rk power f ilure
or
+green
Fig. 10 Communication and supply device BKNE 230-24
2 
Tab. 2.2.1. Communication and supply device BKNE 230-24
Communication and supply device BKNE 230-24
Nominal voltage AC 230V 50/60Hz
Power consumption 10 W (including actuating mechanism)
Dimensioning 19 VA (including actuating mechanism)
Degree of protection II
Ambient temperature range
Non-operating temperature - 30 °C … + 50 °C
- 40 °C … + 80 °C
Connecting - net
 - actuator
 - terminal board
cable 1 m without plug
6-pole connector, 3-pole connector
screw terminals for cable 2x1,5 mm
2.3. Design with electric actuating mechanism with emergency function and electromagnet
 Design .4M0, .4M1, .5M0 and .5M1
MSD-W is always equipped by electric actuating mechanism BLF 230-T, BLF 24-T, DAF2.20S or 
DAF1.20S (further only "actuating mechanism") and is complemented with initiation by means of 
an electromagnet (solenoid). After being connected to power supply AC/DC 24V or 230V, the 
actuating mechanism displaces the damper blade into operation position "CLOSED" and at the 
same time it pre-stretches its back spring. When the actuating mechanism is under voltage, the 
damper blade is in the position "CLOSED" and the back spring is pre-stretched. Time needed for 
full closing of the flap blade from the position "OPEN" to the position "CLOSED" is maximum 
60 sec. This possition is secured by initional lever. If the actuating power supply is cut off damper 
is still in the position "CLOSED". After activation of electromagnet is released initiation lever and 
the back spring displaces the damper blade into the breakdown position "OPEN". The time of 
displacing the blade from the position "OPEN" to the position "CLOSED" takes maximum 16 sec. 
In case that the power supply is restored again (the blade can be in any position), the actuating 
mechanism starts to re-displace the damper blade into the position "CLOSED".
 By voltage AC 230 V is damper equipped by electromagnet EM230. By voltage AC/DC 24 V is 
damper equipped by electromagnet EM230 with pre-pulse switch SIEM24. SEIM24 activates the 
electromagnet after capacitor charge witch is placed inside of SIEM24. It takes about 10 sec. 
Charging time depends on the current supply. For reliable operation is necessary connect to 
electromagnet or pre-pulse switch appropriate supply for 2 sec (230 V) or 20 to 30 sec (24 V).