Electric actuator VENTS LF24 | official VENTS website

Description

APPLICATION

DESIGN

The LF series actuators with actuating torque 4 Nm are designed for controlling air dampers with cross section up to 0.8 m² installed in various ventilation and air conditioning systems and performing protection functions, as freezing protection, smoke detection, etc.

The actuator moves the damper to its operating position while tensioning the return spring at the same time.
In case of power supply cut-off, the damper moves back to its safe position by the spring energy.
The actuator is installed directly on the damper axis and locked with a special spindle clamp to prevent its turning-through.
The actuator overload protection stops the actuator once it reaches the end positions.
The turning angle may be adjusted by a mechanical end stop.

Characteristics

Parameter	LF24	Measurement unit
Voltage	24 AC 50/60 Hz, 24 DC~	-
Nominal voltage range	19.2...28.8 AC 21.6…28.8 DC	V
Rated power	7 (max. I 5.8 A at t = 5 ms)	VA
Power consumption in operation/at rest	5/2.5	W
Connecting cable	1 m long, 2 x 0.75 mm²	-
Rotation direction	determined by L/R positioning	-
Torque (motor/spring)	4 (at nominal voltage)/4	Nm
Rotation angle	max. 95°, adjustable 37…100 % with a mechanical end stop	-
Running time (motor/spring)	40…75 (0…4 Nm) /~20 at -20…50 °C	sec
Service life	60 000 switching operations	-
Ingress protection	IP54 (installation with cable downwards)	-
Electrical protection class	III low voltage II totally insulated	-
Operation temperature	-30...+50	°С
Storage temperature	-40…+80	°С
Ambient humidity	95 %, no condensation	-
Noise level (motor/ spring)	50/~62	dBА
Maintenance	not required	-
Mass	1.4	kg

Files archieve

Downloads

Dimensions

Characteristics

Parameter	Value	Measurement unit

Wiring diagram

Overall dimensions

BELIMO LF24