SystemAir PKI-C EI120S, Manual, Page: 29 / 63

Actuators & Control accessories
BLF24-T, BLF24-T-ST
Nominal voltage AC 24 V, 50/60 Hz / DC 24 V
Nominal voltage range AC 19,2 ... 28,8 V / DC 21,6 ... 28,8 V
Tf1: duct outside temperature 72 ºC
Activation temperature of thermal fuses
Tf2 + Tf3: duct inside temperature 72 ºC
Power consumption
- motoring 5 W @ nominal torque
- holding 2,5 W
- for wire sizing 7 VA / lmax. 5.8 @ 5 ms
Protection class III Safety extra-low voltage
Degree of protection IP 54 in all mounting positions
Auxiliary switch 2 x 1 SPDT
- contact rating (contacts gold plate on silver) 1 mA ... 3 A (0.5 A), DC 5 V ... AC 250 V
- switching points
5 º / 80 º
Connecting cable
Motor
BLF24-T
1 m, 2 x 0.75 mm
2
(halogen-free)
BLF24-T-ST
1 m, 2 x 0.75 mm
2
(halogen-free) with plug connectors, suitable for BKN230 / 24
Connecting cable
Auxiliary switch
BLF24-T
1 m, 6 x 0.75 mm
2
(halogen-free)
BLF24-T-ST
1 m, 6 x 0.75 mm
2
(halogen-free) with plug connectors, suitable for BKN230 / 24
Angle of rotation Max. 95º (incl. 5º spring pre-tensioning)
Damper rotation Form-fit

12 mm (

10 mm with adapter supplied)
Torque
- motor Min. 6 Nm
- spring-return Min. 4 Nm
Running time
- motor 40 ... 75 s (0 ... 6 Nm)
- spring- return ~20 s @ -20 ... +50 ºC / max. 60 s @ -30 ºC
Direction of rotation Selected by mounting L / R
Position indication Mechanical with pointer
Ambient temperature -30 ... +50 ºC
Safety duty The safe position will be attained up to max. 75 ºC
Non-operating temperature -40 ...+50 ºC
Ambient humidity range According to EN 60730-1
EMC CE according to 89/336/EEC, 92/31/EEC, 93/68/EEC
Noise level
Motor - max. 45 dB (A)
Spring-return - ~62 dB (A)
Service life Min. 60 000 safe positions
Maintenance Maintenance-free
Weight Approx. 1630 g
Tab. 5 Technical data of actuator BLF24-T, BLF24-T-ST
Fire dampers controls