8
Nominal voltage
AC 24 V 50/60 Hz
DC 24 V
AC 230 V 50/60 Hz
Power consumption - motoring
- holding
7 W
2 W
8 W
3 W
Dimensioning
10 VA (Imax 8,3 A @ 5 ms)
12,5 VA (Imax 500 mA @ 5 ms)
Protection class
III
II
Degree of protection
IP 54
Running time - motor
- spring return
120 sec
~ 16 sec
Ambient Temperature
- normal duty
- safety duty
- non-operating temperature
-30°C … +50°C
The safe position will be attained up to max. 75°C
-40°C … +50°C
Connecting - motor
- auxiliary switch
cable 1 m, 2 x 0,75 mm
²
cable 1 m, 6 x 0,75 mm
²
(BF 24-T-ST) with plug-in connectors
Thermal trips
Tf1: duct outside temperature Duct +72°C
Tf2/Tf3: duct intside temperature Duct +72°C
Design .41 or .51 with actuating mechanism can be complemented with smoke detector
ORS 142 K. The voltage can be AC 230 V or 24 V DC. Design with voltage AC 230 V is equpped
with Communication and supply device BKN 230-24-MOD and with actuating mechanism BF
24-TN (BFL 24-T, BFN 24-T).
The smoke detector is activated when smoke spreads in air duct system. Deactivation of smoke
detector is provided by interruption of supply voltage for min. 2s.
Signalisation of damper blade position "OPEN" a "CLOSE" is provided by two limit switches..
Operating voltage
18 … 28 V DC
Residual ripple
≤ 200 mV
Power Consumption Socket
(without actuating mechanism)
max. 22 mA
Degree of protection
IP 42
Ambient temperature
-20°C … +75°C
Aditional temperature senzor
+70°C
Connection - net
- motor
- communication and supply device BKN
Cabel 1m, connected to terminals 1, 2 and 4
Actuator connected on the terminals 2 and 5
Cabel 1m, connected to terminals 1, 2, 4 and 5
