LRF24-SR - Belimo Rotary actuator 4 Nm, 150 s, 95° AC / DC 24 V, modulating | ideal for ball valves

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The Belimo LRF24-SR is a type of Actuator used in HVAC and ventilation systems.

This kind of Actuator rotates the damper in order to control it.

The force applied by the Torque of the LRF24-SR is 4 Nm.

This Rotary Actuator needs to be supported by a power supply of 24Vac/Vdc.

If you have questions concerning size or installation, refer to the Belimo custom datasheet above or email iacs for individualised support.

LRF24-SR - Rotary actuator 4 Nm, 150 s, 95° AC / DC 24 V, modulating

•    Manual override with integrated position stop
•    Running time spring < 20 s
•    Control DC 0...10 V
•    Operating range DC 2...10 V
•    Position feedback DC 2...10 V
•    Direction of rotation reversible (right/left)
•    Angle of rotation limit. mech. adjustable
•    Emergency control closedYES

Features
 

• Mode of operation The actuator is controlled with a standard modulating signal of DC 0 ... 10 V and moves into the position defined by the control signal while tensioning the return spring at the same time. If the power supply is interrupted, the energy stored in the spring moves the ball valve back to its safe position.


• Simple direct mounting With mounting kit WLF (accessory) simple direct mounting on the ball valve with only one screw. The mounting position in relation to the ball valve can be selected in 90° steps


• Manual override The ball valve can be manually operated and fixed in any position using a hand crank. Unlocking is manual or automatic by applying the operating voltage.
  Please note: The hand crank may only be operated when the actuator is deenergised.


• High functional reliability The actuator is overload-proof, requires no limit switches and automatically stops when the end stop is reached.


• Combination valve actuators Refer to the valve documentation for suitable valves, their permitted media temperatures and closing pressures.

•     Electrical data Nominal voltage AC 24 V, 50/60 Hz DC 24 V
•     Power supply range AC 19.2 ... 28.8 V DC 21.6 ... 28.8 V
•     Power consumption Spring return 2.5 W at nominal torque Holding position 1 W, For wire sizing 5 VA  (lmax. 5.8 A @ 5 ms)
•     Connection Cable 1 m, 4 x 0.75 mm2
•     Parallel connection Yes (Note performance data for supply!)
•     Functional data Torque (nominal torque) Motor Min. 4 Nm at nominal voltage Spring return Min. 4 Nm
•     Control Control signal Y DC 0 ... 10 V, typical input impedance 100 k Operating range DC 2 ... 10 V
•     Position feedback (measuring voltage U) DC 2 ... 10 V, max. 0.7 mA
•     Direction of rotation Deenergised NC, ball valve closed (A – AB = 0%)
•     Manual override With hand crank, can be fixed in any position
•     Angle of rotation 95° 150 s (0 ... 4 Nm) Spring return ~20 s @ –20 ... 50°C / max. 60 s @ –30°C
•     Running time Motor Max. 30 dB (A) Spring return ~62 dB (A)
•     Service life Min. 60’000 emergency settings
•     Position indication Mechanical
•     Safety Protection class III Safety low voltage
•     Degree of protection IP54
•     EMC CE according to 2004/108/EC
•     Mode of operation Type 1 (EN 60730-1)
•     Rated impulse voltage 0.8 kV (EN 60730-1)
•     Control pollution degree 2 (EN 60730-1)
•     Ambient temperature range –30 ... +50°C
•     Media temperature +5 ... +100°C (in ball valve)
•     Non-operating temperature –40 ... +80°C
•     Ambient humidity range 95% r.H., non-condensating (to EN 60730-1)
•     Maintenance Maintenance-free
•     Dimensions / Weight Dimensions See «Dimensions» on page 2
•     Weight Approx. 1.5 kg (without ball valve)