LRF24-S - Belimo Rotary actuator NC 4 Nm, 40...75 s (0...4 Nm), AC / DC 24 V, Open/Close, 2 x SPDT | ideal for ball valves

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The Belimo LRF24-S 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-S is 4 Nm.

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

Find at IACS the ideal Belimo Actuator compatible with your system at the best price.

If you are unsure about size or installation, refer to the Belimo custom datasheet above or message iacs to receive special instructions and a custom quote.

LRF24-S - Rotary actuator NC 4 Nm, 40...75 s (0...4 Nm), AC / DC 24 V, Open/Close, 2 x SPDT

•    Manual override with integrated position stop
•    Running time spring approx. 20 s
•    Auxiliary switch 2 x int., potential-free, fix 5°, 85°
•    Emergency control closedYES

Features
 

• Mode of operation The actuator moves the ball valve to its normal working position 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 WLF mounting kit (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. Release of the locking mechanism can be achieved manually or automatically by applying the supply voltage.
  


• 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 5 W at nominal torque Holding position 2.5 W, For wire sizing 7 VA
•     Auxiliary switch 2 x SPDT, 3 (0.5) A, AC 250 V II Switching points: 10° fixed, 85° fixed
•     Connection Motor Auxiliary switch Cable 1 m, 2 x 0.75 mm2 Cable 1 m, 6 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
•     Direction of rotation LRF24-S Deenergised NC, ball valve closed (A – AB = 0%) LRF24-S-O Deenergised NO, ball valve open (A – AB = 100%)
•     Angle of rotation 95°
•     Running time Motor 40 ... 75 s (0 ... 4 Nm) Spring return ~20 s at –20 ... 50°C / max. 60 s at –30°C
•     Noise level Motor Max. 50 dB (A), Spring return ~62 dB (A)
•     Service life Min. 60’000 emergency settings
•     Position indication Mechanical
•     Safety Protection class III Totally Extra low voltage
•     Manual override With hand crank, can be fixed in any position
•     Degree of protection IP54
•     EMC CE according to 89/336/EEC
•     Mode of operation Type 1 (to EN 60730-1)
•     Rated impulse voltage 4 kV (to EN 60730-1)
•     Control pollution degree 3 (to 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. 1.4 kg (without ball valve)